1 | // Copyright 2012 Georg-August-Universität Göttingen, Germany |
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2 | // |
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3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
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4 | // you may not use this file except in compliance with the License. |
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5 | // You may obtain a copy of the License at |
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6 | // |
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7 | // http://www.apache.org/licenses/LICENSE-2.0 |
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8 | // |
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9 | // Unless required by applicable law or agreed to in writing, software |
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10 | // distributed under the License is distributed on an "AS IS" BASIS, |
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11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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12 | // See the License for the specific language governing permissions and |
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13 | // limitations under the License. |
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14 | |
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15 | package de.ugoe.cs.autoquest.tasktrees.temporalrelation; |
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16 | |
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17 | import java.util.ArrayList; |
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18 | import java.util.HashMap; |
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19 | import java.util.HashSet; |
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20 | import java.util.IdentityHashMap; |
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21 | import java.util.Iterator; |
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22 | import java.util.LinkedList; |
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23 | import java.util.List; |
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24 | import java.util.ListIterator; |
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25 | import java.util.Map; |
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26 | import java.util.Set; |
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27 | import java.util.logging.Level; |
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28 | |
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29 | import de.ugoe.cs.autoquest.tasktrees.taskequality.TaskEquality; |
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30 | import de.ugoe.cs.autoquest.tasktrees.temporalrelation.utils.DebuggingHelper; |
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31 | import de.ugoe.cs.autoquest.tasktrees.treeifc.DefaultTaskInstanceTraversingVisitor; |
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32 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IEventTaskInstance; |
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33 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIteration; |
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34 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIterationInstance; |
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35 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptional; |
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36 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IOptionalInstance; |
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37 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelection; |
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38 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelectionInstance; |
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39 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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40 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequenceInstance; |
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41 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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42 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskBuilder; |
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43 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskFactory; |
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44 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
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45 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstanceList; |
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46 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IUserSession; |
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47 | import de.ugoe.cs.autoquest.usageprofiles.SymbolMap; |
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48 | import de.ugoe.cs.autoquest.usageprofiles.Trie; |
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49 | import de.ugoe.cs.autoquest.usageprofiles.TrieProcessor; |
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50 | import de.ugoe.cs.util.StopWatch; |
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51 | import de.ugoe.cs.util.console.Console; |
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52 | |
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53 | /** |
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54 | * <p> |
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55 | * This class implements the major rule for creating task trees based on a set of recorded |
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56 | * user sessions. For this, it first harmonizes all tasks. This eases later comparison. Then it |
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57 | * searches the sessions for iterations and replaces them accordingly. Then it searches for sub |
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58 | * sequences being the longest and occurring most often. For each found sub sequence, it replaces |
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59 | * the occurrences by creating appropriate {@link ISequence}s. Afterwards, again searches for |
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60 | * iterations and then again for sub sequences until no more replacements are done. |
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61 | * </p> |
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62 | * <p> |
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63 | * For determining the longest sequence occurring most often, the implementation uses a |
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64 | * {@link Trie}. The depth of the tree is initially 3. If the algorithm has a longest sequence |
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65 | * occurring most often whose length is equal to the depth of the trie, it recalculates the trie |
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66 | * with an increased depth. |
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67 | * </p> |
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68 | * |
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69 | * @author Patrick Harms |
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70 | */ |
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71 | class SequenceForTaskDetectionRule implements ISessionScopeRule { |
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72 | |
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73 | /** |
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74 | * <p> |
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75 | * the task factory to be used for creating substructures for the temporal |
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76 | * relationships identified during rul application |
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77 | * </p> |
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78 | */ |
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79 | private ITaskFactory taskFactory; |
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80 | /** |
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81 | * <p> |
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82 | * the task builder to be used for creating substructures for the temporal relationships |
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83 | * identified during rule application |
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84 | * </p> |
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85 | */ |
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86 | private ITaskBuilder taskBuilder; |
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87 | |
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88 | /** |
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89 | * <p> |
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90 | * the task handling strategy to be used for comparing tasks for preparation, i.e., before |
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91 | * the tasks are harmonized |
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92 | * </p> |
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93 | */ |
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94 | private TaskHandlingStrategy preparationTaskHandlingStrategy; |
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95 | |
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96 | /** |
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97 | * <p> |
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98 | * the task handling strategy to be used for comparing tasks during iteration detection an trie |
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99 | * generation, i.e., after the tasks are harmonized |
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100 | * </p> |
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101 | */ |
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102 | private TaskHandlingStrategy identityTaskHandlingStrategy;; |
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103 | |
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104 | /** |
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105 | * <p> |
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106 | * the minimum number of event task instances a sequence must cover to still detect it as a |
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107 | * representative task |
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108 | * </p> |
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109 | */ |
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110 | private int minimumSequenceCoverage;; |
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111 | |
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112 | /** |
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113 | * <p> |
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114 | * instantiates the rule and initializes it with a task equality to be considered when |
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115 | * comparing tasks as well as a task factory and builder to be used for creating task |
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116 | * structures. |
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117 | * </p> |
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118 | * |
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119 | * @param minimalTaskEquality the task equality to be considered when comparing tasks |
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120 | * @param taskFactory the task factory to be used for creating substructures |
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121 | * @param taskBuilder the task builder to be used for creating substructures |
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122 | * @param minimumSequenceCoverage the minimum number of event task instances a sequence must |
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123 | * cover to still detect it as a representative task |
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124 | */ |
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125 | SequenceForTaskDetectionRule(TaskEquality minimalTaskEquality, |
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126 | ITaskFactory taskFactory, |
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127 | ITaskBuilder taskBuilder, |
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128 | int minimumSequenceCoverage) |
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129 | { |
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130 | this.taskFactory = taskFactory; |
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131 | this.taskBuilder = taskBuilder; |
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132 | this.minimumSequenceCoverage = minimumSequenceCoverage; |
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133 | |
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134 | this.preparationTaskHandlingStrategy = new TaskHandlingStrategy(minimalTaskEquality); |
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135 | this.identityTaskHandlingStrategy = new TaskHandlingStrategy(TaskEquality.IDENTICAL); |
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136 | } |
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137 | |
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138 | /* (non-Javadoc) |
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139 | * @see java.lang.Object#toString() |
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140 | */ |
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141 | @Override |
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142 | public String toString() { |
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143 | return "SequenceForTaskDetectionRule"; |
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144 | } |
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145 | |
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146 | /* (non-Javadoc) |
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147 | * @see de.ugoe.cs.autoquest.tasktrees.temporalrelation.ISessionScopeRule#apply(java.util.List) |
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148 | */ |
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149 | @Override |
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150 | public RuleApplicationResult apply(List<IUserSession> sessions) { |
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151 | RuleApplicationData appData = new RuleApplicationData(sessions); |
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152 | |
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153 | // this is the real rule application. Loop while something is replaced. |
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154 | harmonizeEventTaskInstancesModel(appData); |
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155 | do { |
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156 | System.out.println(); |
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157 | |
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158 | appData.getStopWatch().start("whole loop"); |
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159 | detectAndReplaceIterations(appData); |
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160 | |
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161 | appData.getStopWatch().start("task replacement"); |
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162 | detectAndReplaceTasks(appData); |
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163 | appData.getStopWatch().stop("task replacement"); |
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164 | appData.getStopWatch().stop("whole loop"); |
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165 | |
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166 | //((TaskTreeNodeComparator) taskComparator).getStopWatch().dumpStatistics(System.out); |
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167 | //((TaskTreeNodeComparator) taskComparator).getStopWatch().reset(); |
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168 | |
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169 | appData.getStopWatch().dumpStatistics(System.out); |
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170 | appData.getStopWatch().reset(); |
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171 | |
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172 | } |
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173 | while (appData.detectedAndReplacedTasks()); |
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174 | |
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175 | Console.println |
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176 | ("created " + appData.getResult().getNewlyCreatedTasks().size() + |
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177 | " new tasks and " + appData.getResult().getNewlyCreatedTaskInstances().size() + |
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178 | " appropriate instances\n"); |
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179 | |
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180 | if ((appData.getResult().getNewlyCreatedTasks().size() > 0) || |
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181 | (appData.getResult().getNewlyCreatedTaskInstances().size() > 0)) |
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182 | { |
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183 | appData.getResult().setRuleApplicationStatus(RuleApplicationStatus.FINISHED); |
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184 | } |
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185 | |
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186 | return appData.getResult(); |
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187 | } |
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188 | |
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189 | /** |
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190 | * <p> |
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191 | * harmonizes the event task instances by unifying tasks. This is done, as initially the |
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192 | * event tasks being equal with respect to the considered task equality are distinct objects. |
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193 | * The comparison of these distinct objects is more time consuming than comparing the object |
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194 | * references. |
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195 | * </p> |
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196 | * |
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197 | * @param appData the rule application data combining all data used for applying this rule |
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198 | */ |
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199 | private void harmonizeEventTaskInstancesModel(RuleApplicationData appData) { |
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200 | Console.traceln(Level.INFO, "harmonizing task model of event task instances"); |
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201 | appData.getStopWatch().start("harmonizing event tasks"); |
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202 | |
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203 | SymbolMap<ITask, ITask> uniqueTasks = preparationTaskHandlingStrategy.createSymbolMap(); |
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204 | TaskComparator comparator = preparationTaskHandlingStrategy.getTaskComparator(); |
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205 | |
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206 | int unifiedTasks = 0; |
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207 | ITask task; |
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208 | List<IUserSession> sessions = appData.getSessions(); |
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209 | int sessionNo = 0; |
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210 | for (IUserSession session : sessions) { |
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211 | Console.traceln(Level.FINE, "handling " + (++sessionNo) + ". " + session); |
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212 | for (ITaskInstance taskInstance : session) { |
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213 | task = uniqueTasks.getValue(taskInstance.getTask()); |
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214 | |
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215 | if (task == null) { |
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216 | uniqueTasks.addSymbol(taskInstance.getTask(), taskInstance.getTask()); |
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217 | } |
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218 | else { |
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219 | taskBuilder.setTask(taskInstance, task); |
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220 | unifiedTasks++; |
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221 | } |
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222 | } |
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223 | |
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224 | comparator.clearBuffers(); |
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225 | } |
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226 | |
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227 | appData.getStopWatch().stop("harmonizing event tasks"); |
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228 | Console.traceln(Level.INFO, "harmonized " + unifiedTasks + " task occurrences (still " + |
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229 | uniqueTasks.size() + " different tasks)"); |
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230 | |
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231 | appData.getStopWatch().dumpStatistics(System.out); |
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232 | appData.getStopWatch().reset(); |
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233 | } |
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234 | |
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235 | /** |
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236 | * <p> |
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237 | * searches for direct iterations of single tasks in all sequences and replaces them with |
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238 | * {@link IIteration}s, respectively appropriate instances. Also all single occurrences of |
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239 | * a task that is iterated somewhen are replaced with iterations to have again an efficient |
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240 | * way for task comparisons. |
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241 | * </p> |
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242 | * |
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243 | * @param appData the rule application data combining all data used for applying this rule |
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244 | */ |
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245 | private void detectAndReplaceIterations(RuleApplicationData appData) { |
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246 | Console.traceln(Level.FINE, "detecting iterations"); |
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247 | appData.getStopWatch().start("detecting iterations"); |
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248 | |
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249 | List<IUserSession> sessions = appData.getSessions(); |
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250 | |
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251 | Set<ITask> iteratedTasks = searchIteratedTasks(sessions); |
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252 | |
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253 | if (iteratedTasks.size() > 0) { |
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254 | replaceIterationsOf(iteratedTasks, sessions, appData); |
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255 | } |
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256 | |
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257 | appData.getStopWatch().stop("detecting iterations"); |
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258 | Console.traceln(Level.INFO, "replaced " + iteratedTasks.size() + " iterated tasks"); |
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259 | } |
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260 | |
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261 | /** |
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262 | * <p> |
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263 | * searches the provided sessions for task iterations. If a task is iterated, it is added |
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264 | * to the returned set. |
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265 | * </p> |
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266 | * |
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267 | * @param the session to search for iterations in |
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268 | * |
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269 | * @return a set of tasks being iterated somewhere |
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270 | */ |
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271 | private Set<ITask> searchIteratedTasks(List<IUserSession> sessions) { |
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272 | Set<ITask> iteratedTasks = new HashSet<ITask>(); |
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273 | for (IUserSession session : sessions) { |
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274 | for (int i = 0; i < (session.size() - 1); i++) { |
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275 | // we prepared the task instances to refer to unique tasks, if they are treated |
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276 | // as equal. Therefore, we just compare the identity of the tasks of the task |
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277 | // instances |
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278 | if (session.get(i).getTask() == session.get(i + 1).getTask()) { |
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279 | iteratedTasks.add(session.get(i).getTask()); |
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280 | } |
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281 | } |
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282 | } |
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283 | |
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284 | return iteratedTasks; |
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285 | } |
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286 | |
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287 | /** |
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288 | * <p> |
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289 | * replaces all occurrences of all tasks provided in the set with iterations |
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290 | * </p> |
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291 | * |
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292 | * @param iteratedTasks the tasks to be replaced with iterations |
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293 | * @param sessions the sessions in which the tasks are to be replaced |
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294 | * @param appData the rule application data combining all data used for applying this rule |
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295 | */ |
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296 | private void replaceIterationsOf(Set<ITask> iteratedTasks, |
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297 | List<IUserSession> sessions, |
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298 | RuleApplicationData appData) |
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299 | { |
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300 | Map<ITask, IIteration> iterations = new HashMap<ITask, IIteration>(); |
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301 | Map<IIteration, IOptional> optionals = new HashMap<IIteration, IOptional>(); |
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302 | Map<IIteration, List<IIterationInstance>> iterationInstances = |
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303 | new HashMap<IIteration, List<IIterationInstance>>(); |
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304 | |
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305 | for (ITask iteratedTask : iteratedTasks) { |
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306 | IIteration iteration = taskFactory.createNewIteration(); |
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307 | iterations.put(iteratedTask, iteration); |
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308 | |
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309 | if (iteratedTask instanceof IOptional) { |
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310 | IOptional optional = taskFactory.createNewOptional(); |
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311 | taskBuilder.setMarkedTask(optional, iteration); |
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312 | optionals.put(iteration, optional); |
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313 | } |
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314 | |
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315 | iterationInstances.put(iteration, new LinkedList<IIterationInstance>()); |
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316 | } |
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317 | |
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318 | IOptionalInstance optionalInstance; |
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319 | IIterationInstance iterationInstance; |
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320 | |
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321 | for (IUserSession session : sessions) { |
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322 | int index = 0; |
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323 | optionalInstance = null; |
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324 | iterationInstance = null; |
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325 | boolean inReplacement = false; |
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326 | |
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327 | while (index < session.size()) { |
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328 | // we prepared the task instances to refer to unique tasks, if they are treated |
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329 | // as equal. Therefore, we just compare the identity of the tasks of the task |
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330 | // instances |
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331 | ITask currentTask = session.get(index).getTask(); |
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332 | IIteration iteration = iterations.get(currentTask); |
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333 | if (iteration != null) { |
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334 | // replacement required. Check if we already replaced a previous child, or if |
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335 | // we did, if the current child needs to be in the same iteration instance or |
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336 | // a new one. |
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337 | if (!inReplacement || (iterationInstance.getTask() != iteration)) { |
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338 | // initiate a new replacement by creating the corresponding new instance |
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339 | if (currentTask instanceof IOptional) { |
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340 | IOptional optional = optionals.get(iteration); |
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341 | optionalInstance = taskFactory.createNewTaskInstance(optional); |
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342 | taskBuilder.addTaskInstance(session, index, optionalInstance); |
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343 | } |
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344 | else { |
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345 | iterationInstance = taskFactory.createNewTaskInstance(iteration); |
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346 | iterationInstances.get(iteration).add(iterationInstance); |
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347 | taskBuilder.addTaskInstance(session, index, iterationInstance); |
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348 | } |
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349 | inReplacement = true; |
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350 | index++; |
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351 | } |
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352 | |
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353 | // add the current task instance to the iteration instance that is going to |
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354 | // replace it |
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355 | if (currentTask instanceof IOptional) { |
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356 | ITaskInstance child = ((IOptionalInstance) session.get(index)).getChild(); |
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357 | |
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358 | if (child != null) { |
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359 | if (iterationInstance == null) { |
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360 | iterationInstance = taskFactory.createNewTaskInstance(iteration); |
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361 | iterationInstances.get(iteration).add(iterationInstance); |
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362 | taskBuilder.setChild(optionalInstance, iterationInstance); |
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363 | } |
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364 | taskBuilder.addChild(iterationInstance, child); |
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365 | } |
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366 | } |
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367 | else { |
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368 | taskBuilder.addChild(iterationInstance, session.get(index)); |
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369 | } |
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370 | |
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371 | // remove the task instance that was added to the replacing iteration instance |
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372 | taskBuilder.removeTaskInstance(session, index); |
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373 | } |
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374 | else { |
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375 | // no replacement require. Finish previous replacements and continue |
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376 | if (iterationInstance != null) { |
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377 | iterationInstance = null; |
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378 | optionalInstance = null; |
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379 | inReplacement = false; |
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380 | } |
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381 | index++; |
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382 | } |
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383 | } |
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384 | } |
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385 | |
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386 | for (Map.Entry<IIteration, List<IIterationInstance>> entry : iterationInstances.entrySet()) |
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387 | { |
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388 | harmonizeIterationInstancesModel(entry.getKey(), entry.getValue()); |
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389 | } |
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390 | } |
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391 | |
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392 | /** |
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393 | * <p> |
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394 | * This may not be required anymore. The goal was the following. Consider two subsequent task |
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395 | * instances which are detected to be repeating tasks on a level defined by the |
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396 | * preparationTaskHandlingStrategy. Then the replacement of these iterated tasks by iteration |
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397 | * instances would result in an iteration instance with two children, both of them having a |
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398 | * different task assigned which does not match the child of the iteration model. This needs |
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399 | * to be harmonized afterwards. |
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400 | * </p> |
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401 | * <p> |
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402 | * <b>But, because we introduced the harmonization of event tasks directly at the beginning and |
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403 | * afterwards, we compare only based on object identity, this may not be required anymore.</b> |
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404 | * </p> |
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405 | */ |
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406 | private void harmonizeIterationInstancesModel(IIteration iteration, |
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407 | List<IIterationInstance> iterationInstances) |
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408 | { |
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409 | List<ITask> iteratedTaskVariants = new LinkedList<ITask>(); |
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410 | TaskComparator comparator = preparationTaskHandlingStrategy.getTaskComparator(); |
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411 | |
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412 | // merge the lexically different variants of iterated task to a unique list |
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413 | for (IIterationInstance iterationInstance : iterationInstances) { |
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414 | for (ITaskInstance executionVariant : iterationInstance) { |
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415 | ITask candidate = executionVariant.getTask(); |
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416 | |
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417 | boolean found = false; |
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418 | for (ITask taskVariant : iteratedTaskVariants) { |
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419 | if (comparator.areLexicallyEqual(taskVariant, candidate)) { |
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420 | taskBuilder.setTask(executionVariant, taskVariant); |
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421 | found = true; |
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422 | break; |
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423 | } |
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424 | } |
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425 | |
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426 | if (!found) { |
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427 | iteratedTaskVariants.add(candidate); |
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428 | } |
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429 | } |
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430 | } |
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431 | |
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432 | // if there are more than one lexically different variant of iterated tasks, adapt the |
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433 | // iteration model to be a selection of different variants. In this case also adapt |
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434 | // the generated iteration instances to correctly contain selection instances. If there |
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435 | // is only one variant of an iterated task, simply set this as the marked task of the |
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436 | // iteration. In this case, the instances can be preserved as is |
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437 | if (iteratedTaskVariants.size() > 1) { |
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438 | ISelection selection = taskFactory.createNewSelection(); |
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439 | |
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440 | for (ITask variant : iteratedTaskVariants) { |
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441 | taskBuilder.addChild(selection, variant); |
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442 | } |
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443 | |
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444 | taskBuilder.setMarkedTask(iteration, selection); |
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445 | |
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446 | for (IIterationInstance instance : iterationInstances) { |
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447 | for (int i = 0; i < instance.size(); i++) { |
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448 | ISelectionInstance selectionInstance = |
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449 | taskFactory.createNewTaskInstance(selection); |
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450 | taskBuilder.setChild(selectionInstance, instance.get(i)); |
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451 | taskBuilder.setTaskInstance(instance, i, selectionInstance); |
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452 | } |
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453 | } |
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454 | } |
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455 | else { |
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456 | taskBuilder.setMarkedTask(iteration, iteratedTaskVariants.get(0)); |
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457 | } |
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458 | } |
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459 | |
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460 | /** |
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461 | * TODO go on commenting |
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462 | * @param appData the rule application data combining all data used for applying this rule |
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463 | */ |
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464 | private void detectAndReplaceTasks(RuleApplicationData appData) { |
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465 | Console.traceln(Level.FINE, "detecting and replacing tasks"); |
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466 | appData.getStopWatch().start("detecting tasks"); |
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467 | |
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468 | getSubsequencesOccuringMostOften(appData); |
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469 | |
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470 | appData.getStopWatch().stop("detecting tasks"); |
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471 | appData.getStopWatch().start("sorting tasks"); |
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472 | |
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473 | removeInterleavingTasks(appData); |
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474 | |
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475 | appData.getStopWatch().stop("sorting tasks"); |
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476 | appData.getStopWatch().start("replacing tasks"); |
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477 | |
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478 | replaceSequencesOccurringMostOften(appData); |
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479 | |
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480 | appData.getStopWatch().stop("replacing tasks"); |
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481 | Console.traceln(Level.INFO, "detected and replaced " + appData.getLastFoundSubsequences().size() + |
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482 | " tasks occuring " + appData.getLastFoundSubsequences().getOccurrenceCount() + |
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483 | " times"); |
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484 | } |
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485 | |
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486 | /** |
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487 | * @param appData the rule application data combining all data used for applying this rule |
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488 | */ |
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489 | private void getSubsequencesOccuringMostOften(RuleApplicationData appData) { |
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490 | Console.traceln(Level.FINER, "determining most prominent subsequences"); |
---|
491 | |
---|
492 | Subsequences subsequences; |
---|
493 | boolean createNewTrie = (appData.getLastTrie() == null) || |
---|
494 | appData.detectedAndReplacedTasks(); // tree has changed |
---|
495 | |
---|
496 | do { |
---|
497 | if (createNewTrie) { |
---|
498 | createNewTrie(appData); |
---|
499 | } |
---|
500 | |
---|
501 | appData.getStopWatch().start("applying finder"); |
---|
502 | MaxCountAndLongestSubsequencesFinder finder = new MaxCountAndLongestSubsequencesFinder(); |
---|
503 | appData.getLastTrie().process(finder); |
---|
504 | appData.getStopWatch().stop("applying finder"); |
---|
505 | |
---|
506 | appData.getStopWatch().start("remove permutations"); |
---|
507 | subsequences = finder.getFoundSubsequences(); |
---|
508 | appData.getStopWatch().stop("remove permutations"); |
---|
509 | |
---|
510 | appData.getStopWatch().start("drop unrepresentative"); |
---|
511 | dropUnrepresentative(subsequences, appData); |
---|
512 | appData.getStopWatch().stop("drop unrepresentative"); |
---|
513 | |
---|
514 | createNewTrie = false; |
---|
515 | |
---|
516 | for (Subsequence subsequence : subsequences) { |
---|
517 | if (subsequence.size() >= appData.getTrainedSubsequenceLength()) { |
---|
518 | // Trie must be recreated with a longer sequence length to be sure that |
---|
519 | // the found sequences occurring most often are found in their whole length |
---|
520 | appData.setTrainedSubsequenceLength(appData.getTrainedSubsequenceLength() + 3); |
---|
521 | createNewTrie = true; |
---|
522 | break; |
---|
523 | } |
---|
524 | } |
---|
525 | } |
---|
526 | while (createNewTrie); |
---|
527 | |
---|
528 | // create a normal trie for comparison |
---|
529 | /*System.out.println("creating test trie for comparison"); |
---|
530 | |
---|
531 | appData.getStopWatch().start("testtrie"); |
---|
532 | Trie<ITaskInstance> trie = new Trie<ITaskInstance>(identityTaskComparator); |
---|
533 | |
---|
534 | for (IUserSession session : appData.getSessions()) { |
---|
535 | trie.train(session.getExecutedTasks(), appData.getTrainedSequenceLength()); |
---|
536 | } |
---|
537 | |
---|
538 | appData.getStopWatch().stop("testtrie"); |
---|
539 | |
---|
540 | MaxCountAndLongestTasksFinder finder = new MaxCountAndLongestTasksFinder(); |
---|
541 | trie.process(finder); |
---|
542 | |
---|
543 | boolean allTasksEqual = finder.getFoundTasks().size() == tasks.size(); |
---|
544 | |
---|
545 | allTasksEqual &= finder.getFoundTasks().occurrenceCount == tasks.occurrenceCount; |
---|
546 | |
---|
547 | for (List<ITaskInstance> task1 : finder.getFoundTasks()) { |
---|
548 | boolean foundTask = false; |
---|
549 | for (List<ITaskInstance> task2 : tasks) { |
---|
550 | boolean tasksEqual = false; |
---|
551 | if (task1.size() == task2.size()) { |
---|
552 | tasksEqual = true; |
---|
553 | for (int i = 0; i < task1.size(); i++) { |
---|
554 | if (!identityTaskComparator.equals(task1.get(i).getTask(), task2.get(i).getTask())) |
---|
555 | { |
---|
556 | tasksEqual = false; |
---|
557 | } |
---|
558 | } |
---|
559 | } |
---|
560 | |
---|
561 | if (tasksEqual) { |
---|
562 | foundTask = true; |
---|
563 | break; |
---|
564 | } |
---|
565 | } |
---|
566 | |
---|
567 | if (!foundTask) { |
---|
568 | System.out.println("different is " + task1); |
---|
569 | allTasksEqual = false; |
---|
570 | break; |
---|
571 | } |
---|
572 | } |
---|
573 | |
---|
574 | if (!allTasksEqual) { |
---|
575 | System.out.println(finder.getFoundTasks()); |
---|
576 | System.out.println(tasks); |
---|
577 | |
---|
578 | throw new IllegalArgumentException("both tries calculated different subsequences"); |
---|
579 | } |
---|
580 | |
---|
581 | /*TrieStatisticsDumper dumper = new TrieStatisticsDumper(); |
---|
582 | appData.getLastTrie().process(dumper); |
---|
583 | dumper.dumpCounters();*/ |
---|
584 | |
---|
585 | appData.setLastFoundSubsequences(subsequences); |
---|
586 | |
---|
587 | Console.traceln(Level.FINE, "found " + appData.getLastFoundSubsequences().size() + |
---|
588 | " tasks occurring " + |
---|
589 | appData.getLastFoundSubsequences().getOccurrenceCount() + " times"); |
---|
590 | } |
---|
591 | |
---|
592 | /** |
---|
593 | * <p> |
---|
594 | * TODO: comment |
---|
595 | * </p> |
---|
596 | * |
---|
597 | * @param subsequences |
---|
598 | */ |
---|
599 | private void dropUnrepresentative(Subsequences subsequences, RuleApplicationData appData) { |
---|
600 | Map<Subsequence, List<SubsequenceLocation>> locations = getLocations(subsequences, appData); |
---|
601 | |
---|
602 | for (Map.Entry<Subsequence, List<SubsequenceLocation>> entry : locations.entrySet()) { |
---|
603 | final int[] coveredActionInstances = new int[1]; |
---|
604 | for (SubsequenceLocation loc : entry.getValue()) { |
---|
605 | for (int i = loc.getIndex(); i < loc.getIndex() + entry.getKey().size(); i++) { |
---|
606 | ITaskInstance taskInstance = loc.getSession().get(i); |
---|
607 | |
---|
608 | taskInstance.accept(new DefaultTaskInstanceTraversingVisitor() { |
---|
609 | @Override |
---|
610 | public void visit(IEventTaskInstance eventTaskInstance) { |
---|
611 | coveredActionInstances[0]++; |
---|
612 | } |
---|
613 | }); |
---|
614 | } |
---|
615 | } |
---|
616 | |
---|
617 | if (coveredActionInstances[0] < minimumSequenceCoverage) { |
---|
618 | subsequences.remove(entry.getKey()); |
---|
619 | } |
---|
620 | } |
---|
621 | } |
---|
622 | |
---|
623 | /** |
---|
624 | * @param appData the rule application data combining all data used for applying this rule |
---|
625 | */ |
---|
626 | private void createNewTrie(RuleApplicationData appData) { |
---|
627 | Console.traceln(Level.FINEST, "training trie with a maximum sequence length of " + |
---|
628 | appData.getTrainedSubsequenceLength()); |
---|
629 | |
---|
630 | appData.getStopWatch().start("training trie"); |
---|
631 | |
---|
632 | // we prepared the task instances to refer to unique tasks, if they are treated |
---|
633 | // as equal. Therefore, we just compare the identity of the tasks of the task |
---|
634 | // instances |
---|
635 | appData.setLastTrie(new TaskInstanceTrie(identityTaskHandlingStrategy)); |
---|
636 | |
---|
637 | appData.getLastTrie().trainSessions |
---|
638 | (appData.getSessions(), appData.getTrainedSubsequenceLength()); |
---|
639 | |
---|
640 | appData.getStopWatch().stop("training trie"); |
---|
641 | } |
---|
642 | |
---|
643 | /** |
---|
644 | * from the last found tasks, sort out those that interleave with each other as for them always |
---|
645 | * the same replacement order needs to be taken. |
---|
646 | */ |
---|
647 | // private void removeInterleavingTasksOld(RuleApplicationData appData) { |
---|
648 | // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
649 | // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TEST IMPLEMENTATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
650 | // // dumpSortedCollectionOfSubsequences |
---|
651 | // // ("found task", appData.getLastFoundSubsequences().subsequences); |
---|
652 | // // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
653 | // // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TEST IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
654 | // |
---|
655 | // List<InterleavingSubsequence> interleavings; |
---|
656 | // |
---|
657 | // do { |
---|
658 | // interleavings = getInterleavings(appData.getLastFoundSubsequences(), appData); |
---|
659 | // |
---|
660 | // if (interleavings.size() > 0) { |
---|
661 | // // dumpSorted(interleavings); |
---|
662 | // |
---|
663 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + " subsequences " + |
---|
664 | // // "--> checking for most real interleavings"); |
---|
665 | // |
---|
666 | // // we found interleaving subsequences. We need to decide for them, which to replace |
---|
667 | // // first. For this, we need to remove some of them from the list of detected |
---|
668 | // // subsequences in an ordered way to always have the same prioritization for |
---|
669 | // // replacements. The ones to be removed are those with most interleavings. |
---|
670 | // interleavings = getMostIntensiveInterleavings(interleavings); |
---|
671 | // |
---|
672 | // //dumpSorted(interleavings); |
---|
673 | // |
---|
674 | // if (interleavings.size() == 1) { |
---|
675 | // // Console.traceln(Level.FINEST, "found one most interleaving subsequence " + |
---|
676 | // // "--> removing it and checking for further interleavings"); |
---|
677 | // |
---|
678 | // // we have exactly one most interleaving detected subsequence. In this case, |
---|
679 | // // we remove it from the list of found subsequences and check again, if their |
---|
680 | // // are remaining interleavings. If not, we have the final list of non |
---|
681 | // // interleaving subsequences to be replaced. The order or their replacement |
---|
682 | // // doesn't matter as they are not interleaving. |
---|
683 | // appData.getLastFoundSubsequences().remove |
---|
684 | // (interleavings.get(0).getSubsequence()); |
---|
685 | // |
---|
686 | // continue; |
---|
687 | // } |
---|
688 | // else if (interleavings.size() == 0) { |
---|
689 | // // this should never happen |
---|
690 | // throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
691 | // } |
---|
692 | // |
---|
693 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + " most " + |
---|
694 | // // "interleaving subsequences --> checking which are most often a " + |
---|
695 | // // "successor"); |
---|
696 | // |
---|
697 | // // there are several subsequences with the same amount of interleavings. |
---|
698 | // // Check which of them is the most often a successor. This should be removed. |
---|
699 | // interleavings = getMostInterleavingsAsSuccessor(interleavings); |
---|
700 | // |
---|
701 | // // dumpSorted(interleavings); |
---|
702 | // |
---|
703 | // if (interleavings.size() == 1) { |
---|
704 | // // Console.traceln(Level.FINEST, "found one interleaving subsequence being most " + |
---|
705 | // // "often a successor --> removing it and checking for further " + |
---|
706 | // // "interleavings"); |
---|
707 | // |
---|
708 | // // we have exactly one interleaving subsequence that is most often a successor |
---|
709 | // // of the others. Remove it and try again to see if sufficient interleavings |
---|
710 | // // were cleared. |
---|
711 | // appData.getLastFoundSubsequences().remove |
---|
712 | // (interleavings.get(0).getSubsequence()); |
---|
713 | // |
---|
714 | // continue; |
---|
715 | // } |
---|
716 | // else if (interleavings.size() == 0) { |
---|
717 | // // this should never happen |
---|
718 | // throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
719 | // } |
---|
720 | // |
---|
721 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
722 | // // " most interleaving subsequences being most often a successor " + |
---|
723 | // // "--> checking which is most seldom a predecessor"); |
---|
724 | // |
---|
725 | // // there are several subsequences with the same amount of interleavings being also |
---|
726 | // // the same times a successor of another subsequence. Hence, check which of them is |
---|
727 | // // the least often a predecessor. This should be removed. |
---|
728 | // interleavings = getLeastInterleavingsAsPredecessor(interleavings); |
---|
729 | // |
---|
730 | // //dumpSorted(interleavings); |
---|
731 | // |
---|
732 | // if (interleavings.size() == 1) { |
---|
733 | // // Console.traceln(Level.FINEST, "found one interleaving subsequence being most " + |
---|
734 | // // "often a successor and most seldom a predecessor --> " + |
---|
735 | // // "removing it and checking for further interleavings"); |
---|
736 | // |
---|
737 | // // we have exactly one interleaving subsequence that is most often a successor |
---|
738 | // // and most seldom a predecessor of the others. Remove it and try again to see |
---|
739 | // // if sufficient interleavings were cleared. |
---|
740 | // appData.getLastFoundSubsequences().remove |
---|
741 | // (interleavings.get(0).getSubsequence()); |
---|
742 | // |
---|
743 | // continue; |
---|
744 | // } |
---|
745 | // else if (interleavings.size() == 0) { |
---|
746 | // // this should never happen |
---|
747 | // throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
748 | // } |
---|
749 | // |
---|
750 | // // the remaining subsequences are interleaving the same amount of times and are |
---|
751 | // // used the same amount of times as successors and as predecessors by all other |
---|
752 | // // detected interleaving subsequences. Now lets check, which of them is mostly used |
---|
753 | // // as successor and most seldom used as predecessor only considering the remaining |
---|
754 | // // subsequences. If some of them do not interfere with the others, remove them and |
---|
755 | // // try again to see if sufficient interleavings were cleared. |
---|
756 | // |
---|
757 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
758 | // // " most interleaving subsequences being most often a successor " + |
---|
759 | // // "and most seldom a predecessor --> removing collision being not " + |
---|
760 | // // "between themselves"); |
---|
761 | // |
---|
762 | // interleavings = removeCollisionsOfOtherSubsequences(interleavings); |
---|
763 | // |
---|
764 | // // dumpSorted(interleavings); |
---|
765 | // |
---|
766 | // // Console.traceln(Level.FINEST, "removed collisions of other subsequences not " + |
---|
767 | // // "belonging to the remaining interleaving subsequences --> " + |
---|
768 | // // "checking of the remaining interleaving are most often a " + |
---|
769 | // // "successor of another one"); |
---|
770 | // |
---|
771 | // interleavings = getMostInterleavingsAsSuccessor(interleavings); |
---|
772 | // interleavings = removeCollisionsOfOtherSubsequences(interleavings); |
---|
773 | // |
---|
774 | // // dumpSorted(interleavings); |
---|
775 | // |
---|
776 | // if (interleavings.size() == 1) { |
---|
777 | // // Console.traceln(Level.FINEST, "found one interleaving subsequence being most " + |
---|
778 | // // "often a successor in comparison to the other remaining " + |
---|
779 | // // "interleavings --> removing it and checking for further " + |
---|
780 | // // "interleavings"); |
---|
781 | // |
---|
782 | // appData.getLastFoundSubsequences().remove |
---|
783 | // (interleavings.get(0).getSubsequence()); |
---|
784 | // |
---|
785 | // continue; |
---|
786 | // } |
---|
787 | // else if (interleavings.size() == 0) { |
---|
788 | // // this should never happen |
---|
789 | // throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
790 | // } |
---|
791 | // |
---|
792 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
793 | // // " most interleaving subsequences being most often a successor in " + |
---|
794 | // // "comparison to the other remaining interleavings --> checking " + |
---|
795 | // // "which is most seldom a predecessor"); |
---|
796 | // |
---|
797 | // interleavings = getLeastInterleavingsAsPredecessor(interleavings); |
---|
798 | // interleavings = removeCollisionsOfOtherSubsequences(interleavings); |
---|
799 | // |
---|
800 | // // dumpSorted(interleavings); |
---|
801 | // |
---|
802 | // if (interleavings.size() == 1) { |
---|
803 | // // Console.traceln(Level.FINEST, "found one interleaving subsequence being most " + |
---|
804 | // // "often a successor and most seldom a predecessor in " + |
---|
805 | // // "comparison to the other remaining interleavings --> " + |
---|
806 | // // "removing it and checking for further interleavings"); |
---|
807 | // |
---|
808 | // appData.getLastFoundSubsequences().remove |
---|
809 | // (interleavings.get(0).getSubsequence()); |
---|
810 | // |
---|
811 | // continue; |
---|
812 | // } |
---|
813 | // else if (interleavings.size() == 0) { |
---|
814 | // // this should never happen |
---|
815 | // throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
816 | // } |
---|
817 | // |
---|
818 | // // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
819 | // // " most interleaving subsequences being most often a successor " + |
---|
820 | // // "and most seldom a predecessor in comparison to the other " + |
---|
821 | // // "remaining interleavings --> this may happen if there are no " + |
---|
822 | // // "collisions between them anymore. If so, remove all of them at " + |
---|
823 | // // "once."); |
---|
824 | // |
---|
825 | // int collisionCount = 0; |
---|
826 | // |
---|
827 | // for (InterleavingSubsequence subsequence : interleavings) { |
---|
828 | // collisionCount += subsequence.getCollisionCounter(); |
---|
829 | // } |
---|
830 | // |
---|
831 | // if (collisionCount == 0) { |
---|
832 | // // Console.traceln(Level.FINEST, "remaining interleaving subsequences have no " + |
---|
833 | // // "further collisions with each other --> removing all of them " + |
---|
834 | // // "and checking for further interleavings"); |
---|
835 | // |
---|
836 | // for (InterleavingSubsequence subsequence : interleavings) { |
---|
837 | // appData.getLastFoundSubsequences().remove(subsequence.getSubsequence()); |
---|
838 | // } |
---|
839 | // |
---|
840 | // continue; |
---|
841 | // } |
---|
842 | // |
---|
843 | // // Console.traceln(Level.FINEST, "remaining interleaving subsequences still have " + |
---|
844 | // // "collisions with each other --> decide based on their occurrences" + |
---|
845 | // // " in the sessions (remove those, coming later in comparison to " + |
---|
846 | // // "the others)"); |
---|
847 | // |
---|
848 | // // determine the predecessor collisions being the last in all sessions. Those |
---|
849 | // // collisions show the interleaving subsequence occurring last |
---|
850 | // Map<IUserSession, Collision> sessions = |
---|
851 | // new IdentityHashMap<IUserSession, Collision>(); |
---|
852 | // |
---|
853 | // for (InterleavingSubsequence interleaving : interleavings) { |
---|
854 | // for (Collision coll : interleaving.getPredecessorCollisions()) { |
---|
855 | // Collision maxPosColl = sessions.get(coll.getLocation().getSession()); |
---|
856 | // |
---|
857 | // if ((maxPosColl == null) || |
---|
858 | // (maxPosColl.getLocation().getIndex() < coll.getLocation().getIndex())) |
---|
859 | // { |
---|
860 | // sessions.put(coll.getLocation().getSession(), coll); |
---|
861 | // } |
---|
862 | // } |
---|
863 | // } |
---|
864 | // |
---|
865 | // // determine, which of the subsequences occurs most often as the last one |
---|
866 | // // interleaving with another |
---|
867 | // Map<Subsequence, Integer> lastOccurrenceCounters = |
---|
868 | // new IdentityHashMap<Subsequence, Integer>(); |
---|
869 | // |
---|
870 | // for (Collision coll : sessions.values()) { |
---|
871 | // Integer counter = lastOccurrenceCounters.get(coll.getSubsequence()); |
---|
872 | // |
---|
873 | // if (counter == null) { |
---|
874 | // lastOccurrenceCounters.put(coll.getSubsequence(), 1); |
---|
875 | // } |
---|
876 | // else { |
---|
877 | // lastOccurrenceCounters.put(coll.getSubsequence(), counter + 1); |
---|
878 | // } |
---|
879 | // } |
---|
880 | // |
---|
881 | // int maxCounter = 0; |
---|
882 | // Subsequence toRemove = null; |
---|
883 | // |
---|
884 | // for (Map.Entry<Subsequence, Integer> entry : lastOccurrenceCounters.entrySet()) { |
---|
885 | // if (entry.getValue() > maxCounter) { |
---|
886 | // maxCounter = entry.getValue(); |
---|
887 | // toRemove = entry.getKey(); |
---|
888 | // } |
---|
889 | // else if (entry.getValue() == maxCounter) { |
---|
890 | // // we can not decide again |
---|
891 | // toRemove = null; |
---|
892 | // break; |
---|
893 | // } |
---|
894 | // } |
---|
895 | // |
---|
896 | // if (toRemove != null) { |
---|
897 | // // Console.traceln(Level.FINEST, "one of the remaining interleaving subsequences" + |
---|
898 | // // " is most often the last to occur --> removing it and " + |
---|
899 | // // "checking for further interleavings"); |
---|
900 | // |
---|
901 | // appData.getLastFoundSubsequences().remove(toRemove); |
---|
902 | // continue; |
---|
903 | // } |
---|
904 | // |
---|
905 | // // checking now, if there is one sequence, having the lowest index for any of |
---|
906 | // // its collisions and preserve it. If there are several ones with the same minimum |
---|
907 | // // index, check if they are independent. If not, throw an exception |
---|
908 | // int minPosInAnySequence = Integer.MAX_VALUE; |
---|
909 | // List<InterleavingSubsequence> subsequencesWithMinPos = new LinkedList<>(); |
---|
910 | // |
---|
911 | // for (InterleavingSubsequence interleaving : interleavings) { |
---|
912 | // for (Collision collision : interleaving.getSuccessorCollisions()) { |
---|
913 | // if (minPosInAnySequence > collision.getLocation().getIndex()) { |
---|
914 | // minPosInAnySequence = collision.getLocation().getIndex(); |
---|
915 | // subsequencesWithMinPos.clear(); |
---|
916 | // } |
---|
917 | // |
---|
918 | // if (minPosInAnySequence == collision.getLocation().getIndex()) { |
---|
919 | // // several have the same min pos --> undecidable which to prefer |
---|
920 | // subsequencesWithMinPos.add(interleaving); |
---|
921 | // } |
---|
922 | // } |
---|
923 | // } |
---|
924 | // |
---|
925 | // if (subsequencesWithMinPos.size() > 0) { |
---|
926 | // List<Subsequence> subsequencesToRemove = new LinkedList<Subsequence>(); |
---|
927 | // |
---|
928 | // for (Subsequence candidate : appData.getLastFoundSubsequences()) { |
---|
929 | // boolean found = false; |
---|
930 | // |
---|
931 | // for (InterleavingSubsequence subsequenceWithMinPos : subsequencesWithMinPos) |
---|
932 | // { |
---|
933 | // if (candidate == subsequenceWithMinPos.getSubsequence()) { |
---|
934 | // found = true; |
---|
935 | // } |
---|
936 | // } |
---|
937 | // |
---|
938 | // if (!found) { |
---|
939 | // subsequencesToRemove.add(candidate); |
---|
940 | // } |
---|
941 | // } |
---|
942 | // |
---|
943 | // if (subsequencesToRemove.size() > 0) { |
---|
944 | // for (Subsequence candidate : subsequencesToRemove) { |
---|
945 | // appData.getLastFoundSubsequences().remove(candidate); |
---|
946 | // } |
---|
947 | // |
---|
948 | // continue; |
---|
949 | // } |
---|
950 | // } |
---|
951 | // |
---|
952 | // // At this point, we can not decide anymore. But it should also not |
---|
953 | // // happen. Even if two subsequences ab and ba one of them should be |
---|
954 | // // more often a successor or predecessor than the other if they |
---|
955 | // // directly follow each other. If not, it can not be decided, which of |
---|
956 | // // them to replace first. Perhaps the one occurring more often as |
---|
957 | // // the first in a session that the other. But this can be implemented |
---|
958 | // // later. |
---|
959 | // dumpSorted(interleavings, Level.SEVERE); |
---|
960 | // |
---|
961 | // throw new RuntimeException |
---|
962 | // ("can not decide which detected subsequence to replace first."); |
---|
963 | // } |
---|
964 | // } |
---|
965 | // while (interleavings.size() > 0); |
---|
966 | // |
---|
967 | // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
968 | // // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TEST IMPLEMENTATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
969 | // // dumpSortedCollectionOfSubsequences |
---|
970 | // // ("to replace", appData.getLastFoundSubsequences().subsequences); |
---|
971 | // // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
972 | // // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TEST IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
973 | // } |
---|
974 | |
---|
975 | /** |
---|
976 | * from the last found tasks, sort out those that interleave with each other as for them always |
---|
977 | * the same replacement order needs to be taken. |
---|
978 | */ |
---|
979 | private void removeInterleavingTasks(RuleApplicationData appData) { |
---|
980 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
981 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TEST IMPLEMENTATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
982 | // dumpSortedCollectionOfSubsequences |
---|
983 | // ("found task", appData.getLastFoundSubsequences().subsequences); |
---|
984 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
985 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TEST IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
986 | |
---|
987 | List<InterleavingSubsequence> interleavings; |
---|
988 | |
---|
989 | do { |
---|
990 | interleavings = getInterleavings(appData.getLastFoundSubsequences(), appData); |
---|
991 | |
---|
992 | if (interleavings.size() > 0) { |
---|
993 | // dumpSorted(interleavings); |
---|
994 | |
---|
995 | // Console.traceln(Level.FINEST, "found " + interleavings.size() + " subsequences " + |
---|
996 | // "--> checking for most real interleavings"); |
---|
997 | |
---|
998 | // we found interleaving subsequences. We need to decide for them, which to replace |
---|
999 | // first. For this, we need to remove some of them from the list of detected |
---|
1000 | // subsequences in an ordered way to always have the same prioritization for |
---|
1001 | // replacements. The ones to be removed are those with most interleavings. |
---|
1002 | interleavings = getMostIntensiveInterleavings(interleavings); |
---|
1003 | |
---|
1004 | //dumpSorted(interleavings); |
---|
1005 | |
---|
1006 | if (interleavings.size() < appData.getLastFoundSubsequences().size()) { |
---|
1007 | // Console.traceln(Level.FINEST, "found most interleaving subsequences " + |
---|
1008 | // "--> removing them and checking for further interleavings"); |
---|
1009 | |
---|
1010 | // we have most interleaving subsequences. As these are less than all detected |
---|
1011 | // subsequences, we remove them and check if there are remaining interleavings. |
---|
1012 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1013 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1014 | } |
---|
1015 | |
---|
1016 | continue; |
---|
1017 | } |
---|
1018 | else if (interleavings.size() == 0) { |
---|
1019 | // this should never happen |
---|
1020 | throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
1021 | } |
---|
1022 | |
---|
1023 | // Console.traceln(Level.FINEST, "found " + interleavings.size() + " most " + |
---|
1024 | // "interleaving subsequences --> checking which are most often a " + |
---|
1025 | // "successor"); |
---|
1026 | |
---|
1027 | // all detected subsequences are also interleaving with the same amount of time |
---|
1028 | // check, which of them is most often the successor in a collision |
---|
1029 | interleavings = removeCollisionsOfOtherSubsequences(interleavings); |
---|
1030 | interleavings = getMostInterleavingsAsSuccessor(interleavings); |
---|
1031 | |
---|
1032 | // dumpSorted(interleavings); |
---|
1033 | |
---|
1034 | if (interleavings.size() < appData.getLastFoundSubsequences().size()) { |
---|
1035 | // Console.traceln(Level.FINEST, "found interleaving subsequences being most " + |
---|
1036 | // "often a successor --> removing them and checking for further " + |
---|
1037 | // "interleavings"); |
---|
1038 | |
---|
1039 | // we have interleaving subsequences that are most often a successor |
---|
1040 | // of the others. As they are less than all detected subsequences, remove them |
---|
1041 | // and try again to see if sufficient interleavings were cleared. |
---|
1042 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1043 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1044 | } |
---|
1045 | |
---|
1046 | continue; |
---|
1047 | } |
---|
1048 | else if (interleavings.size() == 0) { |
---|
1049 | // this should never happen |
---|
1050 | throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
1051 | } |
---|
1052 | |
---|
1053 | // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
1054 | // " most interleaving subsequences being most often a successor " + |
---|
1055 | // "--> checking which is most seldom a predecessor"); |
---|
1056 | |
---|
1057 | // all detected subsequences have the same amount of interleavings being also |
---|
1058 | // the same times a successor of another subsequence. Hence, check which of them is |
---|
1059 | // the least often a predecessor. This should be removed. |
---|
1060 | interleavings = removeCollisionsOfOtherSubsequences(interleavings); |
---|
1061 | interleavings = getLeastInterleavingsAsPredecessor(interleavings); |
---|
1062 | |
---|
1063 | //dumpSorted(interleavings); |
---|
1064 | |
---|
1065 | if (interleavings.size() < appData.getLastFoundSubsequences().size()) { |
---|
1066 | // Console.traceln(Level.FINEST, "found interleaving subsequences being most " + |
---|
1067 | // "often a successor and most seldom a predecessor --> " + |
---|
1068 | // "removing them and checking for further interleavings"); |
---|
1069 | |
---|
1070 | // we have interleaving subsequences that are most often a successor |
---|
1071 | // and most seldom a predecessor of the others. As they are less than all |
---|
1072 | // detected subsequences, remove them and try again to see |
---|
1073 | // if sufficient interleavings were cleared. |
---|
1074 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1075 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1076 | } |
---|
1077 | |
---|
1078 | continue; |
---|
1079 | } |
---|
1080 | else if (interleavings.size() == 0) { |
---|
1081 | // this should never happen |
---|
1082 | throw new RuntimeException("Implementation error: don't know how I got here"); |
---|
1083 | } |
---|
1084 | |
---|
1085 | // the remaining subsequences are interleaving the same amount of times and are |
---|
1086 | // used the same amount of times as successors and as predecessors by all other |
---|
1087 | // detected interleaving subsequences. |
---|
1088 | |
---|
1089 | // Console.traceln(Level.FINEST, "found " + interleavings.size() + |
---|
1090 | // " most interleaving subsequences being most often a successor " + |
---|
1091 | // "and most seldom a predecessor in comparison to the other " + |
---|
1092 | // "remaining interleavings --> decide based on their occurrences" + |
---|
1093 | // " in the sessions (remove those, coming later in comparison to " + |
---|
1094 | // "the others)"); |
---|
1095 | |
---|
1096 | // determine the subsequences whose sum of the indexes of collisions is smallest or |
---|
1097 | // who has the smallest collision index in all sessions and remove all others |
---|
1098 | int overallMinSumOfCollisionIndexes = Integer.MAX_VALUE; |
---|
1099 | int overallMinimalCollisionIndex = Integer.MAX_VALUE; |
---|
1100 | List<InterleavingSubsequence> interleavingsWithMinSum = new LinkedList<>(); |
---|
1101 | List<InterleavingSubsequence> interleavingsWithMinIndex = new LinkedList<>(); |
---|
1102 | |
---|
1103 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1104 | int sumOfCollisionIndexes = 0; |
---|
1105 | int minimalCollisionIndex = Integer.MAX_VALUE; |
---|
1106 | |
---|
1107 | for (Collision coll : interleaving.getPredecessorCollisions()) { |
---|
1108 | sumOfCollisionIndexes += coll.getLocation().getIndex(); |
---|
1109 | minimalCollisionIndex = |
---|
1110 | Math.min(minimalCollisionIndex, coll.getLocation().getIndex()); |
---|
1111 | } |
---|
1112 | |
---|
1113 | for (Collision coll : interleaving.getSuccessorCollisions()) { |
---|
1114 | sumOfCollisionIndexes += coll.getLocation().getIndex(); |
---|
1115 | minimalCollisionIndex = |
---|
1116 | Math.min(minimalCollisionIndex, coll.getLocation().getIndex()); |
---|
1117 | } |
---|
1118 | |
---|
1119 | if (overallMinSumOfCollisionIndexes > sumOfCollisionIndexes) { |
---|
1120 | interleavingsWithMinSum.clear(); |
---|
1121 | interleavingsWithMinSum.add(interleaving); |
---|
1122 | overallMinSumOfCollisionIndexes = sumOfCollisionIndexes; |
---|
1123 | } |
---|
1124 | else if (overallMinSumOfCollisionIndexes == sumOfCollisionIndexes) { |
---|
1125 | interleavingsWithMinSum.add(interleaving); |
---|
1126 | } |
---|
1127 | |
---|
1128 | if (overallMinimalCollisionIndex > minimalCollisionIndex) { |
---|
1129 | interleavingsWithMinIndex.clear(); |
---|
1130 | interleavingsWithMinIndex.add(interleaving); |
---|
1131 | overallMinimalCollisionIndex = minimalCollisionIndex; |
---|
1132 | } |
---|
1133 | else if (overallMinimalCollisionIndex == minimalCollisionIndex) { |
---|
1134 | interleavingsWithMinIndex.add(interleaving); |
---|
1135 | } |
---|
1136 | } |
---|
1137 | |
---|
1138 | if (interleavingsWithMinSum.size() < appData.getLastFoundSubsequences().size()) { |
---|
1139 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1140 | boolean found = false; |
---|
1141 | for (InterleavingSubsequence candidate : interleavingsWithMinSum) { |
---|
1142 | if (candidate == interleaving) { |
---|
1143 | found = true; |
---|
1144 | break; |
---|
1145 | } |
---|
1146 | } |
---|
1147 | |
---|
1148 | if (!found) { |
---|
1149 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1150 | } |
---|
1151 | } |
---|
1152 | |
---|
1153 | continue; |
---|
1154 | } |
---|
1155 | |
---|
1156 | if (interleavingsWithMinIndex.size() < appData.getLastFoundSubsequences().size()) { |
---|
1157 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1158 | boolean found = false; |
---|
1159 | for (InterleavingSubsequence candidate : interleavingsWithMinIndex) { |
---|
1160 | if (candidate == interleaving) { |
---|
1161 | found = true; |
---|
1162 | break; |
---|
1163 | } |
---|
1164 | } |
---|
1165 | |
---|
1166 | if (!found) { |
---|
1167 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1168 | } |
---|
1169 | } |
---|
1170 | |
---|
1171 | continue; |
---|
1172 | } |
---|
1173 | |
---|
1174 | // the remaining subsequences are interleaving the same amount of times, are |
---|
1175 | // used the same amount of times as successors and predecessors by all other |
---|
1176 | // detected interleaving subsequences, and their sum of the indexes of collisions |
---|
1177 | // is smallest or their collision index in all sessions is the smallest. This may |
---|
1178 | // happen for a subsequence aba for which there is an occurrence ababa. That is, |
---|
1179 | // the subsequence interleaves with itself. We can try to solve this by shortening |
---|
1180 | // the detected subsequence by one. Let us see, what happens. |
---|
1181 | /*boolean changedSubsequence = false; |
---|
1182 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1183 | if (interleaving.getSubsequence().size() > 2) { |
---|
1184 | appData.getLastFoundSubsequences().remove(interleaving.getSubsequence()); |
---|
1185 | List<ITask> shortenedSubsequence = new LinkedList<>(); |
---|
1186 | for (int i = 0; i < interleaving.getSubsequence().size() - 1; i++) { |
---|
1187 | shortenedSubsequence.add(interleaving.getSubsequence().get(i)); |
---|
1188 | } |
---|
1189 | appData.getLastFoundSubsequences().subsequences.add |
---|
1190 | (new Subsequence(interleaving.getSubsequence().occurrenceCount, |
---|
1191 | shortenedSubsequence)); |
---|
1192 | |
---|
1193 | changedSubsequence = true; |
---|
1194 | } |
---|
1195 | } |
---|
1196 | |
---|
1197 | if (changedSubsequence) { |
---|
1198 | continue; |
---|
1199 | }*/ |
---|
1200 | |
---|
1201 | |
---|
1202 | // At this point, we can not decide anymore. But it should also not |
---|
1203 | // happen. Even if two subsequences ab and ba one of them should be |
---|
1204 | // more often a successor or predecessor than the other if they |
---|
1205 | // directly follow each other. If not, it can not be decided, which of |
---|
1206 | // them to replace first. Perhaps the one occurring more often as |
---|
1207 | // the first in a session than the other. But this can be implemented |
---|
1208 | // later. |
---|
1209 | dumpSorted(interleavings, Level.SEVERE); |
---|
1210 | |
---|
1211 | throw new RuntimeException |
---|
1212 | ("can not decide which detected subsequence to replace first."); |
---|
1213 | } |
---|
1214 | } |
---|
1215 | while (interleavings.size() > 0); |
---|
1216 | |
---|
1217 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
1218 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TEST IMPLEMENTATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
1219 | // dumpSortedCollectionOfSubsequences |
---|
1220 | // ("to replace", appData.getLastFoundSubsequences().subsequences); |
---|
1221 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
1222 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TEST IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
1223 | } |
---|
1224 | |
---|
1225 | /** |
---|
1226 | * |
---|
1227 | */ |
---|
1228 | private List<InterleavingSubsequence> getInterleavings(Subsequences subsequences, |
---|
1229 | RuleApplicationData appData) |
---|
1230 | { |
---|
1231 | appData.getStopWatch().start("determine interleavings"); |
---|
1232 | List<InterleavingSubsequence> interleavings = new LinkedList<InterleavingSubsequence>(); |
---|
1233 | List<Subsequence> potentialPredecessors = new LinkedList<Subsequence>(); |
---|
1234 | List<Subsequence> potentialSuccessors = new LinkedList<Subsequence>(); |
---|
1235 | |
---|
1236 | for (Subsequence subsequence : subsequences) { |
---|
1237 | // Console.traceln |
---|
1238 | // (Level.FINEST, "searching for interleavings of " + toPlainStr(subsequence)); |
---|
1239 | |
---|
1240 | potentialPredecessors.clear(); |
---|
1241 | potentialSuccessors.clear(); |
---|
1242 | |
---|
1243 | getInterleavingSubsequences |
---|
1244 | (subsequence, subsequences, potentialPredecessors, potentialSuccessors); |
---|
1245 | |
---|
1246 | if ((potentialPredecessors.size() <= 0) && (potentialSuccessors.size() <= 0)) { |
---|
1247 | // subsequence is not interleaving with others. Check next one. |
---|
1248 | continue; |
---|
1249 | } |
---|
1250 | |
---|
1251 | // subsequence is interleaving. First, determine its locations in the user sessions. |
---|
1252 | |
---|
1253 | List<Collision> precedingCollisions = |
---|
1254 | getPrecedingCollisions(subsequence, potentialPredecessors, appData); |
---|
1255 | |
---|
1256 | List<Collision> succeedingCollisions = |
---|
1257 | getSucceedingCollisions(subsequence, potentialSuccessors, appData); |
---|
1258 | |
---|
1259 | if ((precedingCollisions.size() <= 0) && (succeedingCollisions.size() <= 0)) { |
---|
1260 | // subsequence is not interleaving with others. Check next one. |
---|
1261 | continue; |
---|
1262 | } |
---|
1263 | |
---|
1264 | interleavings.add(new InterleavingSubsequence(subsequence, precedingCollisions, |
---|
1265 | succeedingCollisions)); |
---|
1266 | } |
---|
1267 | |
---|
1268 | appData.getStopWatch().stop("determine interleavings"); |
---|
1269 | return interleavings; |
---|
1270 | } |
---|
1271 | |
---|
1272 | /** |
---|
1273 | * |
---|
1274 | */ |
---|
1275 | private void getInterleavingSubsequences(Subsequence subsequence, |
---|
1276 | Subsequences allSubsequences, |
---|
1277 | List<Subsequence> potentialPredecessors, |
---|
1278 | List<Subsequence> potentialSuccessors) |
---|
1279 | { |
---|
1280 | TaskComparator comparator = identityTaskHandlingStrategy.getTaskComparator(); |
---|
1281 | |
---|
1282 | for (Subsequence candidate : allSubsequences) { |
---|
1283 | if (comparator.equals(subsequence.get(subsequence.size() - 1), candidate.get(0))) { |
---|
1284 | potentialSuccessors.add(candidate); |
---|
1285 | } |
---|
1286 | |
---|
1287 | if (comparator.equals(subsequence.get(0), candidate.get(candidate.size() - 1))) { |
---|
1288 | potentialPredecessors.add(candidate); |
---|
1289 | } |
---|
1290 | } |
---|
1291 | |
---|
1292 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
1293 | // >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TEST IMPLEMENTATION >>>>>>>>>>>>>>>>>>>>>>>>>>>>> |
---|
1294 | // Console.traceln(Level.FINEST, " potential successors of " + toPlainStr(subsequence)); |
---|
1295 | // dumpSortedCollectionOfSubsequences(" ", potentialSuccessors); |
---|
1296 | |
---|
1297 | // Console.traceln(Level.FINEST, " potential predecessors of " + toPlainStr(subsequence)); |
---|
1298 | // dumpSortedCollectionOfSubsequences(" ", potentialPredecessors); |
---|
1299 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
1300 | // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< TEST IMPLEMENTATION <<<<<<<<<<<<<<<<<<<<<<<<<<<<< |
---|
1301 | } |
---|
1302 | |
---|
1303 | /** |
---|
1304 | * |
---|
1305 | */ |
---|
1306 | private Map<Subsequence, List<SubsequenceLocation>> getLocations(Subsequences subsequences, |
---|
1307 | RuleApplicationData appData) |
---|
1308 | { |
---|
1309 | Map<Subsequence, List<SubsequenceLocation>> result = |
---|
1310 | new IdentityHashMap<Subsequence, List<SubsequenceLocation>>(); |
---|
1311 | |
---|
1312 | // fill the map with empty locations |
---|
1313 | for (Subsequence subsequence : subsequences) { |
---|
1314 | result.put(subsequence, new LinkedList<SubsequenceLocation>()); |
---|
1315 | } |
---|
1316 | |
---|
1317 | /* |
---|
1318 | LinkedList<LinkedList<Subsequence>> candidates = new LinkedList<LinkedList<Subsequence>>(); |
---|
1319 | |
---|
1320 | for (IUserSession session : appData.getSessions()) { |
---|
1321 | for (int i = 0; i < session.size(); i++) { |
---|
1322 | ITask currentTask = session.get(i).getTask(); |
---|
1323 | |
---|
1324 | // create a list of candidates that may start here |
---|
1325 | LinkedList<Subsequence> candidatesToStartHere = new LinkedList<Subsequence>(); |
---|
1326 | |
---|
1327 | for (Subsequence candidate : subsequences) { |
---|
1328 | if (candidate.get(0) == currentTask) { |
---|
1329 | candidatesToStartHere.add(candidate); |
---|
1330 | } |
---|
1331 | } |
---|
1332 | |
---|
1333 | candidates.addFirst(candidatesToStartHere); |
---|
1334 | |
---|
1335 | // check if the other candidates continue here. |
---|
1336 | ListIterator<LinkedList<Subsequence>> candidatesIt = candidates.listIterator(1); |
---|
1337 | int index = 1; |
---|
1338 | while (candidatesIt.hasNext()) { |
---|
1339 | ListIterator<Subsequence> candidateIt = candidatesIt.next().listIterator(); |
---|
1340 | while (candidateIt.hasNext()) { |
---|
1341 | Subsequence candidate = candidateIt.next(); |
---|
1342 | |
---|
1343 | if (candidate.get(index) == currentTask) { |
---|
1344 | if (candidate.size() == (index + 1)) { |
---|
1345 | // subsequence was fully matched --> store location |
---|
1346 | result.get(candidate).add |
---|
1347 | (new SubsequenceLocation(session, i - candidate.size() + 1)); |
---|
1348 | candidateIt.remove(); |
---|
1349 | } |
---|
1350 | } |
---|
1351 | else if (candidate.get(index) != currentTask) { |
---|
1352 | // remove the candidate as it is not located here |
---|
1353 | candidateIt.remove(); |
---|
1354 | } |
---|
1355 | } |
---|
1356 | |
---|
1357 | index++; |
---|
1358 | } |
---|
1359 | |
---|
1360 | // remove potential continuation being empty |
---|
1361 | while ((candidates.size() > 0) && (candidates.getLast().size() == 0)) { |
---|
1362 | candidates.removeLast(); |
---|
1363 | } |
---|
1364 | } |
---|
1365 | }*/ |
---|
1366 | |
---|
1367 | /* |
---|
1368 | for (IUserSession session : appData.getSessions()) { |
---|
1369 | LinkedList<Iterator<ITask>> candidateIterators = new LinkedList<>(); |
---|
1370 | LinkedList<Subsequence> candidates = new LinkedList<>(); |
---|
1371 | |
---|
1372 | for (int i = 0; i < session.size(); i++) { |
---|
1373 | ITask currentTask = session.get(i).getTask(); |
---|
1374 | |
---|
1375 | // create a list of candidates that may start here |
---|
1376 | for (Subsequence candidate : subsequences) { |
---|
1377 | if (candidate.get(0) == currentTask) { |
---|
1378 | candidates.add(candidate); |
---|
1379 | candidateIterators.add(candidate.iterator()); |
---|
1380 | } |
---|
1381 | } |
---|
1382 | |
---|
1383 | // check which candidates continue/end here. |
---|
1384 | ListIterator<Iterator<ITask>> candidateItsIt = candidateIterators.listIterator(); |
---|
1385 | ListIterator<Subsequence> candidatesIt = candidates.listIterator(); |
---|
1386 | while (candidateItsIt.hasNext()) { |
---|
1387 | Iterator<ITask> candidateIterator = candidateItsIt.next(); |
---|
1388 | Subsequence candidate = candidatesIt.next(); |
---|
1389 | if (candidateIterator.hasNext()) { |
---|
1390 | ITask expectedTask = candidateIterator.next(); |
---|
1391 | if (expectedTask != currentTask) { |
---|
1392 | // remove the iterator and the candidate from both lists. |
---|
1393 | candidatesIt.remove(); |
---|
1394 | candidateItsIt.remove(); |
---|
1395 | } |
---|
1396 | // else leave iterator as is and continue |
---|
1397 | } |
---|
1398 | else { |
---|
1399 | // the candidate belonging to the iterator fully matched. Hence, store the |
---|
1400 | // location and drop the candidate and its iterator |
---|
1401 | candidatesIt.remove(); |
---|
1402 | candidateItsIt.remove(); |
---|
1403 | |
---|
1404 | result.get(candidate).add |
---|
1405 | (new SubsequenceLocation(session, i - candidate.size())); |
---|
1406 | } |
---|
1407 | } |
---|
1408 | } |
---|
1409 | |
---|
1410 | // check, which further iterators match with the session end. |
---|
1411 | ListIterator<Iterator<ITask>> candidateItsIt = candidateIterators.listIterator(); |
---|
1412 | ListIterator<Subsequence> candidatesIt = candidates.listIterator(); |
---|
1413 | while (candidatesIt.hasNext()) { |
---|
1414 | Iterator<ITask> candidateIterator = candidateItsIt.next(); |
---|
1415 | Subsequence candidate = candidatesIt.next(); |
---|
1416 | if (!candidateIterator.hasNext()) { |
---|
1417 | // the candidate belonging to the iterator fully matched. Hence, store the |
---|
1418 | // location and drop the candidate and its iterator |
---|
1419 | result.get(candidate).add |
---|
1420 | (new SubsequenceLocation(session, session.size() - candidate.size())); |
---|
1421 | } |
---|
1422 | } |
---|
1423 | }*/ |
---|
1424 | |
---|
1425 | for (IUserSession session : appData.getSessions()) { |
---|
1426 | for (Subsequence candidate : subsequences) { |
---|
1427 | int index = -1; |
---|
1428 | do { |
---|
1429 | index = getSubListIndex(session, candidate, index + 1); |
---|
1430 | |
---|
1431 | if (index > -1) { |
---|
1432 | result.get(candidate).add(new SubsequenceLocation(session, index)); |
---|
1433 | } |
---|
1434 | } |
---|
1435 | while (index > -1); |
---|
1436 | } |
---|
1437 | } |
---|
1438 | |
---|
1439 | return result; |
---|
1440 | } |
---|
1441 | |
---|
1442 | /** |
---|
1443 | * |
---|
1444 | */ |
---|
1445 | private List<Collision> getPrecedingCollisions(Subsequence subsequence, |
---|
1446 | List<Subsequence> potentialPredecessors, |
---|
1447 | RuleApplicationData appData) |
---|
1448 | { |
---|
1449 | List<Collision> precedingCollisions = new LinkedList<Collision>(); |
---|
1450 | Map<Subsequence, List<SubsequenceLocation>> allLocations = |
---|
1451 | appData.getLastFoundSubsequenceLocations(); |
---|
1452 | |
---|
1453 | for (SubsequenceLocation location : allLocations.get(subsequence)) { |
---|
1454 | for (Subsequence predecessor : potentialPredecessors) { |
---|
1455 | for (SubsequenceLocation predecessorLocation : allLocations.get(predecessor)) { |
---|
1456 | if ((location.getSession() == predecessorLocation.getSession()) && |
---|
1457 | (location.getIndex() - predecessor.size() + 1 == predecessorLocation.getIndex())) |
---|
1458 | { |
---|
1459 | precedingCollisions.add(new Collision(location, subsequence, predecessor)); |
---|
1460 | } |
---|
1461 | } |
---|
1462 | } |
---|
1463 | } |
---|
1464 | |
---|
1465 | return precedingCollisions; |
---|
1466 | } |
---|
1467 | |
---|
1468 | /** |
---|
1469 | * |
---|
1470 | */ |
---|
1471 | private List<Collision> getSucceedingCollisions(Subsequence subsequence, |
---|
1472 | List<Subsequence> potentialSuccessors, |
---|
1473 | RuleApplicationData appData) |
---|
1474 | { |
---|
1475 | List<Collision> succeedingCollisions = new LinkedList<Collision>(); |
---|
1476 | Map<Subsequence, List<SubsequenceLocation>> allLocations = |
---|
1477 | appData.getLastFoundSubsequenceLocations(); |
---|
1478 | |
---|
1479 | for (SubsequenceLocation location : allLocations.get(subsequence)) { |
---|
1480 | for (Subsequence successor : potentialSuccessors) { |
---|
1481 | for (SubsequenceLocation successorLocation : allLocations.get(successor)) { |
---|
1482 | if ((location.getSession() == successorLocation.getSession()) && |
---|
1483 | (location.getIndex() + subsequence.size() - 1 == successorLocation.getIndex())) |
---|
1484 | { |
---|
1485 | succeedingCollisions.add(new Collision(location, subsequence, successor)); |
---|
1486 | } |
---|
1487 | } |
---|
1488 | } |
---|
1489 | } |
---|
1490 | |
---|
1491 | return succeedingCollisions; |
---|
1492 | } |
---|
1493 | |
---|
1494 | /** |
---|
1495 | * |
---|
1496 | */ |
---|
1497 | private List<InterleavingSubsequence> getMostIntensiveInterleavings |
---|
1498 | (List<InterleavingSubsequence> interleavings) |
---|
1499 | { |
---|
1500 | List<InterleavingSubsequence> mostIntensiveInterleavings = |
---|
1501 | new LinkedList<InterleavingSubsequence>(); |
---|
1502 | |
---|
1503 | int collisionCounter = 0; |
---|
1504 | |
---|
1505 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1506 | if (interleaving.getCollisionCounter() > collisionCounter) { |
---|
1507 | collisionCounter = interleaving.getCollisionCounter(); |
---|
1508 | mostIntensiveInterleavings.clear(); |
---|
1509 | } |
---|
1510 | |
---|
1511 | if (interleaving.getCollisionCounter() == collisionCounter) { |
---|
1512 | mostIntensiveInterleavings.add(interleaving); |
---|
1513 | } |
---|
1514 | } |
---|
1515 | |
---|
1516 | return mostIntensiveInterleavings; |
---|
1517 | } |
---|
1518 | |
---|
1519 | /** |
---|
1520 | * |
---|
1521 | */ |
---|
1522 | private List<InterleavingSubsequence> getLeastInterleavingsAsPredecessor |
---|
1523 | (List<InterleavingSubsequence> interleavings) |
---|
1524 | { |
---|
1525 | List<InterleavingSubsequence> leastInterleavingsAsPredecessor = |
---|
1526 | new LinkedList<InterleavingSubsequence>(); |
---|
1527 | |
---|
1528 | int collisionCounter = Integer.MAX_VALUE; |
---|
1529 | |
---|
1530 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1531 | if (interleaving.getSuccessorCollisionCounter() < collisionCounter) { |
---|
1532 | collisionCounter = interleaving.getSuccessorCollisionCounter(); |
---|
1533 | leastInterleavingsAsPredecessor.clear(); |
---|
1534 | } |
---|
1535 | |
---|
1536 | if (interleaving.getSuccessorCollisionCounter() == collisionCounter) { |
---|
1537 | leastInterleavingsAsPredecessor.add(interleaving); |
---|
1538 | } |
---|
1539 | } |
---|
1540 | |
---|
1541 | return leastInterleavingsAsPredecessor; |
---|
1542 | } |
---|
1543 | |
---|
1544 | /** |
---|
1545 | * |
---|
1546 | */ |
---|
1547 | private List<InterleavingSubsequence> getMostInterleavingsAsSuccessor |
---|
1548 | (List<InterleavingSubsequence> interleavings) |
---|
1549 | { |
---|
1550 | List<InterleavingSubsequence> mostInterleavingsAsSuccessor = |
---|
1551 | new LinkedList<InterleavingSubsequence>(); |
---|
1552 | |
---|
1553 | int collisionCounter = 0; |
---|
1554 | |
---|
1555 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1556 | if (interleaving.getPredecessorCollisionCounter() > collisionCounter) { |
---|
1557 | collisionCounter = interleaving.getPredecessorCollisionCounter(); |
---|
1558 | mostInterleavingsAsSuccessor.clear(); |
---|
1559 | } |
---|
1560 | |
---|
1561 | if (interleaving.getPredecessorCollisionCounter() == collisionCounter) { |
---|
1562 | mostInterleavingsAsSuccessor.add(interleaving); |
---|
1563 | } |
---|
1564 | } |
---|
1565 | |
---|
1566 | return mostInterleavingsAsSuccessor; |
---|
1567 | } |
---|
1568 | |
---|
1569 | /** |
---|
1570 | * |
---|
1571 | */ |
---|
1572 | private List<InterleavingSubsequence> removeCollisionsOfOtherSubsequences |
---|
1573 | (List<InterleavingSubsequence> interleavings) |
---|
1574 | { |
---|
1575 | List<InterleavingSubsequence> subsequencesWithoutOtherCollisions = |
---|
1576 | new LinkedList<InterleavingSubsequence>(); |
---|
1577 | |
---|
1578 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1579 | List<Collision> reducedPredecessorCollisions = new LinkedList<>(); |
---|
1580 | |
---|
1581 | for (Collision collision : interleaving.getPredecessorCollisions()) { |
---|
1582 | for (InterleavingSubsequence otherInterleaving : interleavings) { |
---|
1583 | if (otherInterleaving.getSubsequence() == collision.getCollidingWith()) { |
---|
1584 | reducedPredecessorCollisions.add(collision); |
---|
1585 | break; |
---|
1586 | } |
---|
1587 | } |
---|
1588 | } |
---|
1589 | |
---|
1590 | List<Collision> reducedSuccessorCollisions = new LinkedList<>(); |
---|
1591 | |
---|
1592 | for (Collision collision : interleaving.getSuccessorCollisions()) { |
---|
1593 | for (InterleavingSubsequence otherInterleaving : interleavings) { |
---|
1594 | if (otherInterleaving.getSubsequence() == collision.getCollidingWith()) { |
---|
1595 | reducedSuccessorCollisions.add(collision); |
---|
1596 | break; |
---|
1597 | } |
---|
1598 | } |
---|
1599 | } |
---|
1600 | |
---|
1601 | subsequencesWithoutOtherCollisions.add |
---|
1602 | (new InterleavingSubsequence(interleaving.getSubsequence(), |
---|
1603 | reducedPredecessorCollisions, |
---|
1604 | reducedSuccessorCollisions)); |
---|
1605 | } |
---|
1606 | |
---|
1607 | return subsequencesWithoutOtherCollisions; |
---|
1608 | } |
---|
1609 | |
---|
1610 | /** |
---|
1611 | * @param appData the rule application data combining all data used for applying this rule |
---|
1612 | */ |
---|
1613 | private void replaceSequencesOccurringMostOften(RuleApplicationData appData) { |
---|
1614 | appData.detectedAndReplacedTasks(false); |
---|
1615 | |
---|
1616 | if ((appData.getLastFoundSubsequences().size() > 0) && |
---|
1617 | (appData.getLastFoundSubsequences().getOccurrenceCount() > 1)) |
---|
1618 | { |
---|
1619 | Console.traceln(Level.FINER, "replacing tasks occurrences"); |
---|
1620 | |
---|
1621 | for (Subsequence subsequence : appData.getLastFoundSubsequences()) { |
---|
1622 | ISequence sequence = taskFactory.createNewSequence(); |
---|
1623 | |
---|
1624 | Console.traceln(Level.FINEST, "replacing " + sequence.getId() + ": " + subsequence); |
---|
1625 | |
---|
1626 | List<ISequenceInstance> sequenceInstances = replaceSubsequenceOccurrences |
---|
1627 | (subsequence, appData.getSessions(), sequence); |
---|
1628 | |
---|
1629 | harmonizeSequenceInstancesModel(sequence, sequenceInstances, subsequence.size()); |
---|
1630 | appData.detectedAndReplacedTasks |
---|
1631 | (appData.detectedAndReplacedTasks() || (sequenceInstances.size() > 0)); |
---|
1632 | |
---|
1633 | if (sequenceInstances.size() < appData.getLastFoundSubsequences().getOccurrenceCount()) { |
---|
1634 | Console.traceln(Level.FINE, sequence.getId() + ": replaced task only " + |
---|
1635 | sequenceInstances.size() + " times instead of expected " + |
---|
1636 | appData.getLastFoundSubsequences().getOccurrenceCount()); |
---|
1637 | } |
---|
1638 | } |
---|
1639 | } |
---|
1640 | } |
---|
1641 | |
---|
1642 | /** |
---|
1643 | * |
---|
1644 | */ |
---|
1645 | private void harmonizeSequenceInstancesModel(ISequence sequence, |
---|
1646 | List<ISequenceInstance> sequenceInstances, |
---|
1647 | int sequenceLength) |
---|
1648 | { |
---|
1649 | TaskComparator comparator = preparationTaskHandlingStrategy.getTaskComparator(); |
---|
1650 | |
---|
1651 | // ensure for each subtask that lexically different variants are preserved |
---|
1652 | for (int subTaskIndex = 0; subTaskIndex < sequenceLength; subTaskIndex++) { |
---|
1653 | List<ITask> subTaskVariants = new LinkedList<ITask>(); |
---|
1654 | |
---|
1655 | for (ISequenceInstance sequenceInstance : sequenceInstances) { |
---|
1656 | ITask candidate = sequenceInstance.get(subTaskIndex).getTask(); |
---|
1657 | |
---|
1658 | boolean found = false; |
---|
1659 | |
---|
1660 | for (int i = 0; i < subTaskVariants.size(); i++) { |
---|
1661 | if (comparator.areLexicallyEqual(subTaskVariants.get(i), candidate)) { |
---|
1662 | taskBuilder.setTask |
---|
1663 | (sequenceInstance.get(subTaskIndex), subTaskVariants.get(i)); |
---|
1664 | |
---|
1665 | found = true; |
---|
1666 | break; |
---|
1667 | } |
---|
1668 | } |
---|
1669 | |
---|
1670 | if (!found) { |
---|
1671 | subTaskVariants.add(candidate); |
---|
1672 | } |
---|
1673 | } |
---|
1674 | |
---|
1675 | // if there are more than one lexically different variant of the sub task at |
---|
1676 | // the considered position, adapt the sequence model at that position to have |
---|
1677 | // a selection of the different variants. In this case also adapt the |
---|
1678 | // generated sequence instances to correctly contain selection instances. If |
---|
1679 | // there is only one variant of sub tasks at the given position, simply set |
---|
1680 | // this variant as the sub task of the selection. In this case, the instances |
---|
1681 | // can be preserved as is |
---|
1682 | if (subTaskVariants.size() > 1) { |
---|
1683 | ISelection selection = taskFactory.createNewSelection(); |
---|
1684 | |
---|
1685 | for (ITask variant : subTaskVariants) { |
---|
1686 | taskBuilder.addChild(selection, variant); |
---|
1687 | } |
---|
1688 | |
---|
1689 | taskBuilder.addChild(sequence, selection); |
---|
1690 | |
---|
1691 | for (ISequenceInstance instance : sequenceInstances) { |
---|
1692 | ISelectionInstance selectionInstance = |
---|
1693 | taskFactory.createNewTaskInstance(selection); |
---|
1694 | taskBuilder.setChild(selectionInstance, instance.get(subTaskIndex)); |
---|
1695 | taskBuilder.setTaskInstance(instance, subTaskIndex, selectionInstance); |
---|
1696 | } |
---|
1697 | } |
---|
1698 | else if (subTaskVariants.size() == 1) { |
---|
1699 | taskBuilder.addChild(sequence, subTaskVariants.get(0)); |
---|
1700 | } |
---|
1701 | } |
---|
1702 | } |
---|
1703 | |
---|
1704 | /** |
---|
1705 | * @param tree |
---|
1706 | */ |
---|
1707 | private List<ISequenceInstance> replaceSubsequenceOccurrences(Subsequence subsequence, |
---|
1708 | List<IUserSession> sessions, |
---|
1709 | ISequence temporalTaskModel) |
---|
1710 | { |
---|
1711 | List<ISequenceInstance> sequenceInstances = new LinkedList<ISequenceInstance>(); |
---|
1712 | |
---|
1713 | for (IUserSession session : sessions) { |
---|
1714 | int index = -1; |
---|
1715 | |
---|
1716 | do { |
---|
1717 | index = getSubListIndex(session, subsequence, ++index); |
---|
1718 | |
---|
1719 | if (index > -1) { |
---|
1720 | // subsequence is found --> perform replacement |
---|
1721 | sequenceInstances.add |
---|
1722 | (RuleUtils.createNewSubSequenceInRange |
---|
1723 | (session, index, index + subsequence.size() - 1, temporalTaskModel, |
---|
1724 | taskFactory, taskBuilder)); |
---|
1725 | } |
---|
1726 | } |
---|
1727 | while (index > -1); |
---|
1728 | } |
---|
1729 | |
---|
1730 | return sequenceInstances; |
---|
1731 | } |
---|
1732 | |
---|
1733 | /** |
---|
1734 | * @param trie |
---|
1735 | * @param object |
---|
1736 | * @return |
---|
1737 | */ |
---|
1738 | private static int getSubListIndex(ITaskInstanceList list, |
---|
1739 | Subsequence subsequence, |
---|
1740 | int startIndex) |
---|
1741 | { |
---|
1742 | boolean matchFound; |
---|
1743 | int result = -1; |
---|
1744 | |
---|
1745 | for (int i = startIndex; i <= list.size() - subsequence.size(); i++) { |
---|
1746 | matchFound = true; |
---|
1747 | |
---|
1748 | for (int j = 0; j < subsequence.size(); j++) { |
---|
1749 | // we prepared the task instances to refer to unique tasks, if they are treated |
---|
1750 | // as equal. Therefore, we just compare the identity of the tasks of the task |
---|
1751 | // instances |
---|
1752 | if (list.get(i + j).getTask() != subsequence.get(j)) { |
---|
1753 | matchFound = false; |
---|
1754 | break; |
---|
1755 | } |
---|
1756 | } |
---|
1757 | |
---|
1758 | if (matchFound) { |
---|
1759 | result = i; |
---|
1760 | break; |
---|
1761 | } |
---|
1762 | } |
---|
1763 | |
---|
1764 | return result; |
---|
1765 | } |
---|
1766 | |
---|
1767 | /** |
---|
1768 | * @param trie |
---|
1769 | * @param object |
---|
1770 | * @return |
---|
1771 | */ |
---|
1772 | private int getSubListIndex(Subsequence longerSubsequence, |
---|
1773 | Subsequence shorterSubsequence, |
---|
1774 | int startIndex) |
---|
1775 | { |
---|
1776 | boolean matchFound; |
---|
1777 | int result = -1; |
---|
1778 | |
---|
1779 | for (int i = startIndex; i <= longerSubsequence.size() - shorterSubsequence.size(); i++) { |
---|
1780 | matchFound = true; |
---|
1781 | |
---|
1782 | for (int j = 0; j < shorterSubsequence.size(); j++) { |
---|
1783 | // we prepared the task instances to refer to unique tasks, if they are treated |
---|
1784 | // as equal. Therefore, we just compare the identity of the tasks of the task |
---|
1785 | // instances |
---|
1786 | if (longerSubsequence.get(i + j) != shorterSubsequence.get(j)) { |
---|
1787 | matchFound = false; |
---|
1788 | break; |
---|
1789 | } |
---|
1790 | } |
---|
1791 | |
---|
1792 | if (matchFound) { |
---|
1793 | result = i; |
---|
1794 | break; |
---|
1795 | } |
---|
1796 | } |
---|
1797 | |
---|
1798 | return result; |
---|
1799 | } |
---|
1800 | |
---|
1801 | // /** |
---|
1802 | // * |
---|
1803 | // */ |
---|
1804 | // private void dumpSorted(List<InterleavingSubsequence> interleavings) { |
---|
1805 | // dumpSorted(interleavings, Level.FINEST); |
---|
1806 | // } |
---|
1807 | |
---|
1808 | /** |
---|
1809 | * |
---|
1810 | */ |
---|
1811 | private void dumpSorted(List<InterleavingSubsequence> interleavings, Level level) { |
---|
1812 | List<String> tmpList = new LinkedList<String>(); |
---|
1813 | |
---|
1814 | for (InterleavingSubsequence interleaving : interleavings) { |
---|
1815 | String taskStr = toPlainStr(interleaving); |
---|
1816 | int index; |
---|
1817 | for (index = 0; index < tmpList.size(); index++) { |
---|
1818 | if (taskStr.compareTo(tmpList.get(index)) > 0) { |
---|
1819 | break; |
---|
1820 | } |
---|
1821 | } |
---|
1822 | |
---|
1823 | tmpList.add(index, taskStr); |
---|
1824 | } |
---|
1825 | |
---|
1826 | for (String task : tmpList) { |
---|
1827 | Console.traceln(level, task); |
---|
1828 | } |
---|
1829 | } |
---|
1830 | |
---|
1831 | // /** |
---|
1832 | // * |
---|
1833 | // */ |
---|
1834 | // private void dumpSortedCollectionOfSubsequences(String prefix, |
---|
1835 | // Collection<Subsequence> subsequences) |
---|
1836 | // { |
---|
1837 | // List<String> tmpList = new LinkedList<String>(); |
---|
1838 | // |
---|
1839 | // for (Subsequence subsequence : subsequences) { |
---|
1840 | // String taskStr = toPlainStr(subsequence); |
---|
1841 | // int index; |
---|
1842 | // for (index = 0; index < tmpList.size(); index++) { |
---|
1843 | // if (taskStr.compareTo(tmpList.get(index)) > 0) { |
---|
1844 | // break; |
---|
1845 | // } |
---|
1846 | // } |
---|
1847 | // |
---|
1848 | // tmpList.add(index, taskStr); |
---|
1849 | // } |
---|
1850 | // |
---|
1851 | // for (String task : tmpList) { |
---|
1852 | // Console.traceln(Level.FINEST, prefix + " " + task); |
---|
1853 | // } |
---|
1854 | // } |
---|
1855 | |
---|
1856 | /** |
---|
1857 | * |
---|
1858 | */ |
---|
1859 | private String toPlainStr(InterleavingSubsequence interleaving) { |
---|
1860 | StringBuffer result = new StringBuffer(); |
---|
1861 | result.append("interleavings of "); |
---|
1862 | result.append(toPlainStr(interleaving.getSubsequence())); |
---|
1863 | result.append("\n predecessor collisions:\n"); |
---|
1864 | |
---|
1865 | for (Collision collision : interleaving.getPredecessorCollisions()) { |
---|
1866 | result.append(" "); |
---|
1867 | result.append(toPlainStr(collision.getCollidingWith())); |
---|
1868 | result.append(" ("); |
---|
1869 | result.append(collision.getLocation()); |
---|
1870 | result.append(")\n"); |
---|
1871 | } |
---|
1872 | |
---|
1873 | result.append(" successor collisions:\n"); |
---|
1874 | |
---|
1875 | for (Collision collision : interleaving.getSuccessorCollisions()) { |
---|
1876 | result.append(" "); |
---|
1877 | result.append(toPlainStr(collision.getCollidingWith())); |
---|
1878 | result.append(" ("); |
---|
1879 | result.append(collision.getLocation()); |
---|
1880 | result.append(")\n"); |
---|
1881 | } |
---|
1882 | |
---|
1883 | return result.toString(); |
---|
1884 | } |
---|
1885 | |
---|
1886 | /** |
---|
1887 | * |
---|
1888 | */ |
---|
1889 | private String toPlainStr(Subsequence subsequence) { |
---|
1890 | StringBuffer result = new StringBuffer(); |
---|
1891 | result.append(subsequence.size()); |
---|
1892 | result.append(": "); |
---|
1893 | for (ITask task : subsequence) { |
---|
1894 | DebuggingHelper.toPlainStr(task, result); |
---|
1895 | result.append(" --> "); |
---|
1896 | } |
---|
1897 | |
---|
1898 | return result.toString(); |
---|
1899 | } |
---|
1900 | |
---|
1901 | |
---|
1902 | /** |
---|
1903 | * @author Patrick Harms |
---|
1904 | */ |
---|
1905 | private class MaxCountAndLongestSubsequencesFinder implements TrieProcessor<ITask> { |
---|
1906 | |
---|
1907 | /** |
---|
1908 | * |
---|
1909 | */ |
---|
1910 | private int currentCount; |
---|
1911 | |
---|
1912 | /** |
---|
1913 | * |
---|
1914 | */ |
---|
1915 | private LinkedList<Subsequence> foundSubsequences = new LinkedList<Subsequence>(); |
---|
1916 | |
---|
1917 | /** |
---|
1918 | * |
---|
1919 | */ |
---|
1920 | public MaxCountAndLongestSubsequencesFinder() { |
---|
1921 | super(); |
---|
1922 | this.currentCount = 0; |
---|
1923 | } |
---|
1924 | |
---|
1925 | /* (non-Javadoc) |
---|
1926 | * @see de.ugoe.cs.autoquest.usageprofiles.TrieProcessor#process(java.util.List, int) |
---|
1927 | */ |
---|
1928 | @Override |
---|
1929 | public TrieProcessor.Result process(List<ITask> foundTask, int count) { |
---|
1930 | if (foundTask.size() < 2) { |
---|
1931 | // ignore single tasks |
---|
1932 | return TrieProcessor.Result.CONTINUE; |
---|
1933 | } |
---|
1934 | |
---|
1935 | if (count < 2) { |
---|
1936 | // ignore singular occurrences |
---|
1937 | return TrieProcessor.Result.SKIP_NODE; |
---|
1938 | } |
---|
1939 | |
---|
1940 | if (this.currentCount > count) { |
---|
1941 | // ignore this children of this task, as they may have only smaller counts than |
---|
1942 | // the already found tasks |
---|
1943 | return TrieProcessor.Result.SKIP_NODE; |
---|
1944 | } |
---|
1945 | |
---|
1946 | if (this.currentCount < count) { |
---|
1947 | // the provided task occurs more often that all tasks found so far. |
---|
1948 | // clear all found tasks and use the new count as the one searched for |
---|
1949 | foundSubsequences.clear(); |
---|
1950 | this.currentCount = count; |
---|
1951 | } |
---|
1952 | |
---|
1953 | if (this.currentCount == count) { |
---|
1954 | /* |
---|
1955 | // this is a potential performance improvement: |
---|
1956 | // the task is of interest. Ensure that only the longest remain |
---|
1957 | if ((foundSubsequences.size() > 0) && |
---|
1958 | (foundSubsequences.get(0).size() < foundTask.size())) |
---|
1959 | { |
---|
1960 | foundSubsequences.clear(); |
---|
1961 | } |
---|
1962 | |
---|
1963 | foundSubsequences.add(new Subsequence(currentCount, foundTask));*/ |
---|
1964 | |
---|
1965 | // the task is of interest. Sort it into the other found tasks so that |
---|
1966 | // the longest come first |
---|
1967 | boolean added = false; |
---|
1968 | for (int i = 0; i < foundSubsequences.size(); i++) { |
---|
1969 | if (foundSubsequences.get(i).size() <= foundTask.size()) { |
---|
1970 | foundSubsequences.add(i, new Subsequence(currentCount, foundTask)); |
---|
1971 | added = true; |
---|
1972 | break; |
---|
1973 | } |
---|
1974 | } |
---|
1975 | |
---|
1976 | if (!added) { |
---|
1977 | foundSubsequences.add(new Subsequence(currentCount, foundTask)); |
---|
1978 | } |
---|
1979 | } |
---|
1980 | |
---|
1981 | return TrieProcessor.Result.CONTINUE; |
---|
1982 | } |
---|
1983 | |
---|
1984 | /** |
---|
1985 | * @return |
---|
1986 | */ |
---|
1987 | private Subsequences getFoundSubsequences() { |
---|
1988 | removePermutationsOfShorterTasks(); |
---|
1989 | return new Subsequences(currentCount, foundSubsequences); |
---|
1990 | } |
---|
1991 | |
---|
1992 | /** |
---|
1993 | * |
---|
1994 | */ |
---|
1995 | private void removePermutationsOfShorterTasks() { |
---|
1996 | // now iterate the sorted list and for each task remove all other tasks that are shorter |
---|
1997 | // (i.e. come later in the sorted list) and that represent a subpart of the task |
---|
1998 | |
---|
1999 | boolean removeFirst; |
---|
2000 | ListIterator<Subsequence> iterator1 = foundSubsequences.listIterator(); |
---|
2001 | |
---|
2002 | while (iterator1.hasNext()) { |
---|
2003 | removeFirst = false; |
---|
2004 | boolean removeSecond; |
---|
2005 | Subsequence longTask = iterator1.next(); |
---|
2006 | |
---|
2007 | ListIterator<Subsequence> iterator2 = |
---|
2008 | foundSubsequences.listIterator(iterator1.nextIndex()); |
---|
2009 | |
---|
2010 | while (iterator2.hasNext()) { |
---|
2011 | removeSecond = false; |
---|
2012 | Subsequence shortTask = iterator2.next(); |
---|
2013 | |
---|
2014 | if (shortTask.size() < longTask.size()) { |
---|
2015 | // found a task that is a potential subtask. Check for this and remove the |
---|
2016 | // subtask if needed |
---|
2017 | |
---|
2018 | int index = getSubListIndex(longTask, shortTask, 0); |
---|
2019 | if (index > -1) { |
---|
2020 | if (index == 0) { |
---|
2021 | // check if the short task is included in the long task partially |
---|
2022 | // a second time. If so, prefer the short task |
---|
2023 | boolean secondInclude = true; |
---|
2024 | for (int pos = shortTask.size(); pos < longTask.size(); pos++) { |
---|
2025 | // we prepared the task instances to refer to unique tasks, if |
---|
2026 | // they are treated as equal. Therefore, we just compare the |
---|
2027 | // identity of the tasks of the task instances |
---|
2028 | if (longTask.get(pos) != shortTask.get(pos % shortTask.size())) |
---|
2029 | { |
---|
2030 | secondInclude = false; |
---|
2031 | break; |
---|
2032 | } |
---|
2033 | } |
---|
2034 | |
---|
2035 | if (secondInclude) { |
---|
2036 | // delete the long task |
---|
2037 | // Console.traceln(Level.FINEST, "1: short task is contained several times in longer one --> removing it"); |
---|
2038 | // Console.traceln(Level.FINEST, "short: " + toPlainStr(shortTask)); |
---|
2039 | // Console.traceln(Level.FINEST, "long: " + toPlainStr(longTask)); |
---|
2040 | removeFirst = true; |
---|
2041 | } |
---|
2042 | else { |
---|
2043 | // Console.traceln(Level.FINEST, "2: short task is a part of a longer one --> removing it"); |
---|
2044 | // Console.traceln(Level.FINEST, "short: " + toPlainStr(shortTask)); |
---|
2045 | // Console.traceln(Level.FINEST, "long: " + toPlainStr(longTask)); |
---|
2046 | removeSecond = true; |
---|
2047 | } |
---|
2048 | } |
---|
2049 | else { |
---|
2050 | // Console.traceln(Level.FINEST, "3: short task is a part of a longer one --> removing it"); |
---|
2051 | // Console.traceln(Level.FINEST, "short: " + toPlainStr(shortTask)); |
---|
2052 | // Console.traceln(Level.FINEST, "long: " + toPlainStr(longTask)); |
---|
2053 | removeSecond = true; |
---|
2054 | } |
---|
2055 | } |
---|
2056 | } |
---|
2057 | |
---|
2058 | if (removeSecond) { |
---|
2059 | // unfortunately, this invalidates the first iterator. So recreate it after |
---|
2060 | // the removal. As the removed element will be after the current position of |
---|
2061 | // the first iterator, it is sufficient to remember its location |
---|
2062 | int indexOf1 = iterator1.nextIndex() - 1; |
---|
2063 | iterator2.remove(); |
---|
2064 | iterator1 = foundSubsequences.listIterator(indexOf1); |
---|
2065 | iterator1.next(); |
---|
2066 | } |
---|
2067 | } |
---|
2068 | |
---|
2069 | if (removeFirst) { |
---|
2070 | iterator1.remove(); |
---|
2071 | } |
---|
2072 | } |
---|
2073 | } |
---|
2074 | |
---|
2075 | } |
---|
2076 | |
---|
2077 | // /** |
---|
2078 | // * @author Patrick Harms |
---|
2079 | // */ |
---|
2080 | // private class TrieStatisticsDumper implements TrieProcessor<ITaskInstance> { |
---|
2081 | // |
---|
2082 | // /** |
---|
2083 | // * |
---|
2084 | // */ |
---|
2085 | // private Map<Integer, Integer> counters = new HashMap<Integer, Integer>(); |
---|
2086 | // |
---|
2087 | // /* (non-Javadoc) |
---|
2088 | // * @see de.ugoe.cs.autoquest.usageprofiles.TrieProcessor#process(java.util.List, int) |
---|
2089 | // */ |
---|
2090 | // @Override |
---|
2091 | // public TrieProcessor.Result process(List<ITaskInstance> subsequence, int count) { |
---|
2092 | // if (subsequence.size() == 1) { |
---|
2093 | // Integer value = counters.get(count); |
---|
2094 | // |
---|
2095 | // if (value == null) { |
---|
2096 | // value = 0; |
---|
2097 | // } |
---|
2098 | // |
---|
2099 | // counters.put(count, value + 1); |
---|
2100 | // |
---|
2101 | // return TrieProcessor.Result.CONTINUE; |
---|
2102 | // } |
---|
2103 | // else { |
---|
2104 | // // ignore singular occurrences |
---|
2105 | // return TrieProcessor.Result.SKIP_NODE; |
---|
2106 | // } |
---|
2107 | // } |
---|
2108 | // |
---|
2109 | // /** |
---|
2110 | // * @return |
---|
2111 | // */ |
---|
2112 | // public void dumpCounters() { |
---|
2113 | // int dumpedCounters = 0; |
---|
2114 | // |
---|
2115 | // int count = 1; |
---|
2116 | // while (dumpedCounters < counters.size()) { |
---|
2117 | // Integer value = counters.get(count++); |
---|
2118 | // if (value != null) { |
---|
2119 | // System.out.println(value + " symbols occurred " + count + " times"); |
---|
2120 | // dumpedCounters++; |
---|
2121 | // } |
---|
2122 | // } |
---|
2123 | // } |
---|
2124 | // |
---|
2125 | // } |
---|
2126 | |
---|
2127 | /** |
---|
2128 | * |
---|
2129 | */ |
---|
2130 | private static class RuleApplicationData { |
---|
2131 | |
---|
2132 | /** |
---|
2133 | * |
---|
2134 | */ |
---|
2135 | private List<IUserSession> sessions; |
---|
2136 | |
---|
2137 | /** |
---|
2138 | * |
---|
2139 | */ |
---|
2140 | private TaskInstanceTrie lastTrie; |
---|
2141 | |
---|
2142 | /** |
---|
2143 | * default and minimum trained subsequence length is 3 |
---|
2144 | */ |
---|
2145 | private int trainedSubsequenceLength = 3; |
---|
2146 | |
---|
2147 | /** |
---|
2148 | * |
---|
2149 | */ |
---|
2150 | private Subsequences lastFoundSubsequences = new Subsequences(Integer.MAX_VALUE, null); |
---|
2151 | |
---|
2152 | /** |
---|
2153 | * |
---|
2154 | */ |
---|
2155 | private Map<Subsequence, List<SubsequenceLocation>> lastFoundSubsequenceLocations; |
---|
2156 | |
---|
2157 | /** |
---|
2158 | * |
---|
2159 | */ |
---|
2160 | private boolean detectedAndReplacedTasks; |
---|
2161 | |
---|
2162 | /** |
---|
2163 | * |
---|
2164 | */ |
---|
2165 | private RuleApplicationResult result = new RuleApplicationResult(); |
---|
2166 | |
---|
2167 | /** |
---|
2168 | * |
---|
2169 | */ |
---|
2170 | private StopWatch stopWatch = new StopWatch(); |
---|
2171 | |
---|
2172 | /** |
---|
2173 | * |
---|
2174 | */ |
---|
2175 | private RuleApplicationData(List<IUserSession> sessions) { |
---|
2176 | this.sessions = sessions; |
---|
2177 | } |
---|
2178 | |
---|
2179 | /** |
---|
2180 | * @return the tree |
---|
2181 | */ |
---|
2182 | private List<IUserSession> getSessions() { |
---|
2183 | return sessions; |
---|
2184 | } |
---|
2185 | |
---|
2186 | /** |
---|
2187 | * @param lastTrie the lastTrie to set |
---|
2188 | */ |
---|
2189 | private void setLastTrie(TaskInstanceTrie lastTrie) { |
---|
2190 | this.lastTrie = lastTrie; |
---|
2191 | } |
---|
2192 | |
---|
2193 | /** |
---|
2194 | * @return the lastTrie |
---|
2195 | */ |
---|
2196 | private TaskInstanceTrie getLastTrie() { |
---|
2197 | return lastTrie; |
---|
2198 | } |
---|
2199 | |
---|
2200 | /** |
---|
2201 | * @param trainedSubsequenceLength the trainedSubsequenceLength to set |
---|
2202 | */ |
---|
2203 | private void setTrainedSubsequenceLength(int trainedSubsequenceLength) { |
---|
2204 | this.trainedSubsequenceLength = trainedSubsequenceLength; |
---|
2205 | } |
---|
2206 | |
---|
2207 | /** |
---|
2208 | * @return the trainedSubsequenceLength |
---|
2209 | */ |
---|
2210 | private int getTrainedSubsequenceLength() { |
---|
2211 | return trainedSubsequenceLength; |
---|
2212 | } |
---|
2213 | |
---|
2214 | /** |
---|
2215 | * @param lastFoundSequences the lastFoundSequences to set |
---|
2216 | */ |
---|
2217 | private void setLastFoundSubsequences(Subsequences lastFoundSequences) { |
---|
2218 | this.lastFoundSubsequences = lastFoundSequences; |
---|
2219 | this.lastFoundSubsequenceLocations = null; |
---|
2220 | } |
---|
2221 | |
---|
2222 | /** |
---|
2223 | * @return the lastFoundSequences |
---|
2224 | */ |
---|
2225 | private Subsequences getLastFoundSubsequences() { |
---|
2226 | return lastFoundSubsequences; |
---|
2227 | } |
---|
2228 | |
---|
2229 | /** |
---|
2230 | * @return the lastFoundSequences |
---|
2231 | */ |
---|
2232 | private Map<Subsequence, List<SubsequenceLocation>> getLastFoundSubsequenceLocations() { |
---|
2233 | if (lastFoundSubsequenceLocations != null) { |
---|
2234 | return lastFoundSubsequenceLocations; |
---|
2235 | } |
---|
2236 | |
---|
2237 | lastFoundSubsequenceLocations = |
---|
2238 | new IdentityHashMap<Subsequence, List<SubsequenceLocation>>(); |
---|
2239 | |
---|
2240 | // fill the map with empty locations |
---|
2241 | for (Subsequence subsequence : lastFoundSubsequences) { |
---|
2242 | lastFoundSubsequenceLocations.put |
---|
2243 | (subsequence, new LinkedList<SubsequenceLocation>()); |
---|
2244 | } |
---|
2245 | |
---|
2246 | for (IUserSession session : sessions) { |
---|
2247 | for (Subsequence candidate : lastFoundSubsequences) { |
---|
2248 | int index = -1; |
---|
2249 | do { |
---|
2250 | index = getSubListIndex(session, candidate, index + 1); |
---|
2251 | |
---|
2252 | if (index > -1) { |
---|
2253 | lastFoundSubsequenceLocations.get |
---|
2254 | (candidate).add(new SubsequenceLocation(session, index)); |
---|
2255 | } |
---|
2256 | } |
---|
2257 | while (index > -1); |
---|
2258 | } |
---|
2259 | } |
---|
2260 | |
---|
2261 | return lastFoundSubsequenceLocations; |
---|
2262 | } |
---|
2263 | |
---|
2264 | /** |
---|
2265 | * |
---|
2266 | */ |
---|
2267 | private void detectedAndReplacedTasks(boolean detectedAndReplacedTasks) { |
---|
2268 | this.detectedAndReplacedTasks = detectedAndReplacedTasks; |
---|
2269 | } |
---|
2270 | |
---|
2271 | /** |
---|
2272 | * |
---|
2273 | */ |
---|
2274 | private boolean detectedAndReplacedTasks() { |
---|
2275 | return detectedAndReplacedTasks; |
---|
2276 | } |
---|
2277 | |
---|
2278 | /** |
---|
2279 | * @return the result |
---|
2280 | */ |
---|
2281 | private RuleApplicationResult getResult() { |
---|
2282 | return result; |
---|
2283 | } |
---|
2284 | |
---|
2285 | /** |
---|
2286 | * @return the stopWatch |
---|
2287 | */ |
---|
2288 | private StopWatch getStopWatch() { |
---|
2289 | return stopWatch; |
---|
2290 | } |
---|
2291 | |
---|
2292 | } |
---|
2293 | |
---|
2294 | /** |
---|
2295 | * @author Patrick Harms |
---|
2296 | */ |
---|
2297 | private static class Subsequence implements Iterable<ITask> { |
---|
2298 | |
---|
2299 | /** |
---|
2300 | * |
---|
2301 | */ |
---|
2302 | private int occurrenceCount; |
---|
2303 | |
---|
2304 | /** |
---|
2305 | * |
---|
2306 | */ |
---|
2307 | private List<ITask> subsequence; |
---|
2308 | |
---|
2309 | /** |
---|
2310 | */ |
---|
2311 | private Subsequence(int occurrenceCount, List<ITask> subsequence) { |
---|
2312 | super(); |
---|
2313 | this.occurrenceCount = occurrenceCount; |
---|
2314 | this.subsequence = new ArrayList<ITask>(subsequence); |
---|
2315 | } |
---|
2316 | |
---|
2317 | /** |
---|
2318 | */ |
---|
2319 | private int size() { |
---|
2320 | return this.subsequence.size(); |
---|
2321 | } |
---|
2322 | |
---|
2323 | /** |
---|
2324 | */ |
---|
2325 | private ITask get(int index) { |
---|
2326 | return this.subsequence.get(index); |
---|
2327 | } |
---|
2328 | |
---|
2329 | /* (non-Javadoc) |
---|
2330 | * @see java.lang.Iterable#iterator() |
---|
2331 | */ |
---|
2332 | @Override |
---|
2333 | public Iterator<ITask> iterator() { |
---|
2334 | return this.subsequence.iterator(); |
---|
2335 | } |
---|
2336 | |
---|
2337 | /* (non-Javadoc) |
---|
2338 | * @see java.lang.Object#toString() |
---|
2339 | */ |
---|
2340 | @Override |
---|
2341 | public String toString() { |
---|
2342 | return subsequence.toString() + " (" + occurrenceCount + ")"; |
---|
2343 | } |
---|
2344 | } |
---|
2345 | |
---|
2346 | /** |
---|
2347 | * @author Patrick Harms |
---|
2348 | */ |
---|
2349 | private static class Subsequences implements Iterable<Subsequence> { |
---|
2350 | |
---|
2351 | /** |
---|
2352 | * |
---|
2353 | */ |
---|
2354 | private int occurrenceCount; |
---|
2355 | |
---|
2356 | /** |
---|
2357 | * |
---|
2358 | */ |
---|
2359 | private LinkedList<Subsequence> subsequences; |
---|
2360 | |
---|
2361 | /** |
---|
2362 | */ |
---|
2363 | private Subsequences(int occurrenceCount, LinkedList<Subsequence> subsequences) { |
---|
2364 | super(); |
---|
2365 | this.occurrenceCount = occurrenceCount; |
---|
2366 | this.subsequences = subsequences; |
---|
2367 | } |
---|
2368 | |
---|
2369 | /** |
---|
2370 | * |
---|
2371 | */ |
---|
2372 | private void remove(Subsequence subsequence) { |
---|
2373 | ListIterator<Subsequence> it = subsequences.listIterator(); |
---|
2374 | |
---|
2375 | while (it.hasNext()) { |
---|
2376 | // reference comparison is sufficient |
---|
2377 | if (it.next() == subsequence) { |
---|
2378 | it.remove(); |
---|
2379 | } |
---|
2380 | } |
---|
2381 | } |
---|
2382 | |
---|
2383 | /** |
---|
2384 | */ |
---|
2385 | private int getOccurrenceCount() { |
---|
2386 | return occurrenceCount; |
---|
2387 | } |
---|
2388 | |
---|
2389 | /** |
---|
2390 | */ |
---|
2391 | private int size() { |
---|
2392 | return this.subsequences.size(); |
---|
2393 | } |
---|
2394 | |
---|
2395 | /* (non-Javadoc) |
---|
2396 | * @see java.lang.Iterable#iterator() |
---|
2397 | */ |
---|
2398 | @Override |
---|
2399 | public Iterator<Subsequence> iterator() { |
---|
2400 | return this.subsequences.iterator(); |
---|
2401 | } |
---|
2402 | |
---|
2403 | /* (non-Javadoc) |
---|
2404 | * @see java.lang.Object#toString() |
---|
2405 | */ |
---|
2406 | @Override |
---|
2407 | public String toString() { |
---|
2408 | StringBuffer result = new StringBuffer(); |
---|
2409 | result.append(" subsequences occuring "); |
---|
2410 | result.append(this.occurrenceCount); |
---|
2411 | result.append(" times:\n"); |
---|
2412 | |
---|
2413 | for (Subsequence subsequence : subsequences) { |
---|
2414 | result.append(subsequence); |
---|
2415 | result.append("\n"); |
---|
2416 | } |
---|
2417 | |
---|
2418 | return result.toString(); |
---|
2419 | } |
---|
2420 | } |
---|
2421 | |
---|
2422 | /** |
---|
2423 | * @author Patrick Harms |
---|
2424 | */ |
---|
2425 | private static class InterleavingSubsequence { |
---|
2426 | |
---|
2427 | /** */ |
---|
2428 | private Subsequence subsequence; |
---|
2429 | |
---|
2430 | /** */ |
---|
2431 | private List<Collision> successorCollisions; |
---|
2432 | |
---|
2433 | /** */ |
---|
2434 | private List<Collision> predecessorCollisions; |
---|
2435 | |
---|
2436 | /** |
---|
2437 | * |
---|
2438 | */ |
---|
2439 | private InterleavingSubsequence(Subsequence subsequence, |
---|
2440 | List<Collision> predecessorCollisions, |
---|
2441 | List<Collision> successorCollisions) |
---|
2442 | { |
---|
2443 | super(); |
---|
2444 | this.subsequence = subsequence; |
---|
2445 | this.predecessorCollisions = predecessorCollisions; |
---|
2446 | this.successorCollisions = successorCollisions; |
---|
2447 | } |
---|
2448 | |
---|
2449 | /** |
---|
2450 | * |
---|
2451 | */ |
---|
2452 | private int getCollisionCounter() { |
---|
2453 | return getSuccessorCollisionCounter() + getPredecessorCollisionCounter(); |
---|
2454 | } |
---|
2455 | |
---|
2456 | /** |
---|
2457 | * |
---|
2458 | */ |
---|
2459 | private int getSuccessorCollisionCounter() { |
---|
2460 | return successorCollisions.size(); |
---|
2461 | } |
---|
2462 | |
---|
2463 | /** |
---|
2464 | * |
---|
2465 | */ |
---|
2466 | private List<Collision> getSuccessorCollisions() { |
---|
2467 | return successorCollisions; |
---|
2468 | } |
---|
2469 | |
---|
2470 | /** |
---|
2471 | * |
---|
2472 | */ |
---|
2473 | private int getPredecessorCollisionCounter() { |
---|
2474 | return predecessorCollisions.size(); |
---|
2475 | } |
---|
2476 | |
---|
2477 | /** |
---|
2478 | * |
---|
2479 | */ |
---|
2480 | private List<Collision> getPredecessorCollisions() { |
---|
2481 | return predecessorCollisions; |
---|
2482 | } |
---|
2483 | |
---|
2484 | /** |
---|
2485 | * |
---|
2486 | */ |
---|
2487 | private Subsequence getSubsequence() { |
---|
2488 | return subsequence; |
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2489 | } |
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2490 | |
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2491 | /* (non-Javadoc) |
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2492 | * @see java.lang.Object#toString() |
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2493 | */ |
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2494 | @Override |
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2495 | public String toString() { |
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2496 | return "interleaving subsequence " + subsequence.toString() + " (" + |
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2497 | successorCollisions.size() + " successor, " + predecessorCollisions.size() + |
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2498 | " predecessor)"; |
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2499 | } |
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2500 | } |
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2501 | |
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2502 | /** |
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2503 | * @author Patrick Harms |
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2504 | */ |
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2505 | private static class SubsequenceLocation { |
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2506 | |
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2507 | /** */ |
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2508 | private IUserSession session; |
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2509 | |
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2510 | /** */ |
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2511 | private int index; |
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2512 | |
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2513 | /** |
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2514 | * |
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2515 | */ |
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2516 | private SubsequenceLocation(IUserSession session, int index) { |
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2517 | this.session = session; |
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2518 | this.index = index; |
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2519 | } |
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2520 | |
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2521 | /** |
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2522 | * @return the session |
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2523 | */ |
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2524 | private IUserSession getSession() { |
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2525 | return session; |
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2526 | } |
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2527 | |
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2528 | /** |
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2529 | * @return the index |
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2530 | */ |
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2531 | private int getIndex() { |
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2532 | return index; |
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2533 | } |
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2534 | |
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2535 | /* (non-Javadoc) |
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2536 | * @see java.lang.Object#toString() |
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2537 | */ |
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2538 | @Override |
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2539 | public String toString() { |
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2540 | return "location (" + session + ", " + index + ")"; |
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2541 | } |
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2542 | } |
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2543 | |
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2544 | /** |
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2545 | * @author Patrick Harms |
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2546 | */ |
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2547 | private static class Collision { |
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2548 | |
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2549 | /** */ |
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2550 | private SubsequenceLocation location; |
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2551 | |
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2552 | /** */ |
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2553 | private Subsequence subsequence; |
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2554 | |
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2555 | /** */ |
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2556 | private Subsequence collidingWith; |
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2557 | |
---|
2558 | /** |
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2559 | * |
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2560 | */ |
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2561 | private Collision(SubsequenceLocation location, |
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2562 | Subsequence subsequence, |
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2563 | Subsequence collidingWith) |
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2564 | { |
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2565 | this.location = location; |
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2566 | this.subsequence = subsequence; |
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2567 | this.collidingWith = collidingWith; |
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2568 | } |
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2569 | |
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2570 | /** |
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2571 | * @return the collidingWith |
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2572 | */ |
---|
2573 | private Subsequence getCollidingWith() { |
---|
2574 | return collidingWith; |
---|
2575 | } |
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2576 | |
---|
2577 | /** |
---|
2578 | * @return the location |
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2579 | */ |
---|
2580 | private SubsequenceLocation getLocation() { |
---|
2581 | return location; |
---|
2582 | } |
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2583 | |
---|
2584 | /** |
---|
2585 | * @return the subsequence |
---|
2586 | */ |
---|
2587 | // private Subsequence getSubsequence() { |
---|
2588 | // return subsequence; |
---|
2589 | // } |
---|
2590 | |
---|
2591 | /* (non-Javadoc) |
---|
2592 | * @see java.lang.Object#toString() |
---|
2593 | */ |
---|
2594 | @Override |
---|
2595 | public String toString() { |
---|
2596 | return "collision (" + location + " ," + subsequence + ", " + collidingWith + ")"; |
---|
2597 | } |
---|
2598 | } |
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2599 | |
---|
2600 | // methods for internal testing |
---|
2601 | // private void checkMatchingOfSessions(List<List<Event>> flattenedSessions, |
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2602 | // List<IUserSession> sessions, |
---|
2603 | // String when) |
---|
2604 | // { |
---|
2605 | // List<List<Event>> currentFlattenedSessions = flattenSessions(sessions); |
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2606 | // if (flattenedSessions.size() != currentFlattenedSessions.size()) { |
---|
2607 | // System.out.println("################## number of sessions changed after " + when); |
---|
2608 | // } |
---|
2609 | // else { |
---|
2610 | // for (int i = 0; i < flattenedSessions.size(); i++) { |
---|
2611 | // List<Event> expected = flattenedSessions.get(i); |
---|
2612 | // List<Event> current = currentFlattenedSessions.get(i); |
---|
2613 | // |
---|
2614 | // if (expected.size() != current.size()) { |
---|
2615 | // System.out.println |
---|
2616 | // ("################## length of session " + i + " changed after " + when); |
---|
2617 | // } |
---|
2618 | // else { |
---|
2619 | // for (int j = 0; j < expected.size(); j++) { |
---|
2620 | // if (!expected.get(j).equals(current.get(j))) { |
---|
2621 | // System.out.println("################## event " + j + " of session " + |
---|
2622 | // i + " changed after " + when); |
---|
2623 | // } |
---|
2624 | // } |
---|
2625 | // } |
---|
2626 | // } |
---|
2627 | // } |
---|
2628 | // } |
---|
2629 | // |
---|
2630 | // private List<List<Event>> flattenSessions(List<IUserSession> sessions) { |
---|
2631 | // List<List<Event>> flattenedSessions = new ArrayList<List<Event>>(); |
---|
2632 | // for (IUserSession session : sessions) { |
---|
2633 | // List<Event> flattenedUserSession = new ArrayList<Event>(); |
---|
2634 | // flatten(session, flattenedUserSession); |
---|
2635 | // flattenedSessions.add(flattenedUserSession); |
---|
2636 | // } |
---|
2637 | // |
---|
2638 | // return flattenedSessions; |
---|
2639 | // } |
---|
2640 | // |
---|
2641 | // private void flatten(IUserSession iUserSession, List<Event> flattenedUserSession) { |
---|
2642 | // for (ITaskInstance instance : iUserSession) { |
---|
2643 | // flatten(instance, flattenedUserSession); |
---|
2644 | // } |
---|
2645 | // } |
---|
2646 | // |
---|
2647 | // private void flatten(ITaskInstance instance, List<Event> flattenedUserSession) { |
---|
2648 | // if (instance instanceof ITaskInstanceList) { |
---|
2649 | // for (ITaskInstance child : (ITaskInstanceList) instance) { |
---|
2650 | // flatten(child, flattenedUserSession); |
---|
2651 | // } |
---|
2652 | // } |
---|
2653 | // else if (instance instanceof ISelectionInstance) { |
---|
2654 | // flatten(((ISelectionInstance) instance).getChild(), flattenedUserSession); |
---|
2655 | // } |
---|
2656 | // else if (instance instanceof IOptionalInstance) { |
---|
2657 | // flatten(((IOptionalInstance) instance).getChild(), flattenedUserSession); |
---|
2658 | // } |
---|
2659 | // else if (instance instanceof IEventTaskInstance) { |
---|
2660 | // flattenedUserSession.add(((IEventTaskInstance) instance).getEvent()); |
---|
2661 | // } |
---|
2662 | // } |
---|
2663 | |
---|
2664 | } |
---|