[1552] | 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.Iterator; |
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| 21 | import java.util.LinkedList; |
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| 22 | import java.util.List; |
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| 23 | import java.util.Map; |
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| 24 | import java.util.Set; |
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| 25 | import java.util.logging.Level; |
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| 26 | |
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[1557] | 27 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.FengDoolittle; |
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[1553] | 28 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.NumberSequence; |
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[1554] | 29 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.SmithWaterman; |
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[1558] | 30 | import de.ugoe.cs.autoquest.tasktrees.alignment.algorithms.SmithWatermanRepeated; |
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[1554] | 31 | import de.ugoe.cs.autoquest.tasktrees.alignment.substitution.ObjectDistanceSubstitionMatrix; |
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[1568] | 32 | import de.ugoe.cs.autoquest.tasktrees.alignment.substitution.TriangleMatrix; |
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[1552] | 33 | import de.ugoe.cs.autoquest.tasktrees.taskequality.TaskEquality; |
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| 34 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIteration; |
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| 35 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IIterationInstance; |
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| 36 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelection; |
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| 37 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISelectionInstance; |
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| 38 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequence; |
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| 39 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ISequenceInstance; |
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| 40 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITask; |
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| 41 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskBuilder; |
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| 42 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskFactory; |
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| 43 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstance; |
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| 44 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskInstanceList; |
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| 45 | import de.ugoe.cs.autoquest.tasktrees.treeifc.IUserSession; |
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| 46 | import de.ugoe.cs.autoquest.usageprofiles.SymbolMap; |
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| 47 | import de.ugoe.cs.autoquest.usageprofiles.Trie; |
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| 48 | import de.ugoe.cs.autoquest.usageprofiles.TrieProcessor; |
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| 49 | import de.ugoe.cs.util.StopWatch; |
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| 50 | import de.ugoe.cs.util.console.Console; |
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| 51 | |
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| 52 | /** |
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| 53 | * <p> |
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[1559] | 54 | * This class implements the major rule for creating task trees based on a set |
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| 55 | * of recorded user sessions. For this, it first harmonizes all tasks. This |
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| 56 | * eases later comparison. Then it searches the sessions for iterations and |
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| 57 | * replaces them accordingly. Then it searches for sub sequences being the |
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| 58 | * 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 |
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| 60 | * searches for iterations and then again for sub sequences until no more |
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| 61 | * replacements are done. |
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[1552] | 62 | * </p> |
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| 63 | * <p> |
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[1559] | 64 | * For determining the longest sequence occurring most often, the implementation |
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| 65 | * uses a {@link Trie}. The depth of the tree is initially 3. If the algorithm |
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| 66 | * has a longest sequence occurring most often whose length is equal to the |
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| 67 | * depth of the trie, it recalculates the trie with an increased depth. |
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[1552] | 68 | * </p> |
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| 69 | * |
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| 70 | * @author Patrick Harms |
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| 71 | */ |
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| 72 | class SequenceForTaskDetectionRuleAlignment implements ISessionScopeRule { |
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| 73 | |
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[1559] | 74 | /** |
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| 75 | * <p> |
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| 76 | * the task factory to be used for creating substructures for the temporal |
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| 77 | * relationships identified during rul application |
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| 78 | * </p> |
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| 79 | */ |
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| 80 | private ITaskFactory taskFactory; |
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| 81 | /** |
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| 82 | * <p> |
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| 83 | * the task builder to be used for creating substructures for the temporal |
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| 84 | * relationships identified during rule application |
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| 85 | * </p> |
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| 86 | */ |
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| 87 | private ITaskBuilder taskBuilder; |
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[1552] | 88 | |
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[1559] | 89 | /** |
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| 90 | * <p> |
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| 91 | * the task handling strategy to be used for comparing tasks for |
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| 92 | * preparation, i.e., before the tasks are harmonized |
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| 93 | * </p> |
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| 94 | */ |
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| 95 | private TaskHandlingStrategy preparationTaskHandlingStrategy; |
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[1552] | 96 | |
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[1559] | 97 | /** |
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| 98 | * <p> |
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| 99 | * the task handling strategy to be used for comparing tasks during |
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| 100 | * iteration detection an trie generation, i.e., after the tasks are |
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| 101 | * harmonized |
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| 102 | * </p> |
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| 103 | */ |
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| 104 | private TaskHandlingStrategy identityTaskHandlingStrategy;; |
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[1558] | 105 | |
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[1559] | 106 | private ArrayList<NumberSequence> numberseqs; |
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[1552] | 107 | |
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[1559] | 108 | /** |
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| 109 | * <p> |
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| 110 | * instantiates the rule and initializes it with a task equality to be |
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| 111 | * considered when comparing tasks as well as a task factory and builder to |
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| 112 | * be used for creating task structures. |
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| 113 | * </p> |
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| 114 | * |
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| 115 | * @param minimalTaskEquality |
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| 116 | * the task equality to be considered when comparing tasks |
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| 117 | * @param taskFactory |
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| 118 | * the task factory to be used for creating substructures |
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| 119 | * @param taskBuilder |
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| 120 | * the task builder to be used for creating substructures |
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| 121 | */ |
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[1552] | 122 | |
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[1559] | 123 | SequenceForTaskDetectionRuleAlignment(TaskEquality minimalTaskEquality, |
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| 124 | ITaskFactory taskFactory, ITaskBuilder taskBuilder) { |
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| 125 | this.taskFactory = taskFactory; |
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| 126 | this.taskBuilder = taskBuilder; |
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[1552] | 127 | |
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[1559] | 128 | this.preparationTaskHandlingStrategy = new TaskHandlingStrategy( |
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| 129 | minimalTaskEquality); |
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| 130 | this.identityTaskHandlingStrategy = new TaskHandlingStrategy( |
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| 131 | TaskEquality.IDENTICAL); |
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| 132 | numberseqs = new ArrayList<NumberSequence>(); |
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[1552] | 133 | |
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[1559] | 134 | } |
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| 135 | |
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| 136 | /* |
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| 137 | * (non-Javadoc) |
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| 138 | * |
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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 "SequenceForTaskDetectionRuleAlignment"; |
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| 144 | } |
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| 145 | |
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| 146 | /* |
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| 147 | * (non-Javadoc) |
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| 148 | * |
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| 149 | * @see |
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| 150 | * de.ugoe.cs.autoquest.tasktrees.temporalrelation.ISessionScopeRule#apply |
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| 151 | * (java.util.List) |
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| 152 | */ |
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| 153 | @Override |
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| 154 | public RuleApplicationResult apply(List<IUserSession> sessions) { |
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| 155 | RuleApplicationData appData = new RuleApplicationData(sessions); |
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| 156 | |
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| 157 | // this is the real rule application. Loop while something is replaced. |
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| 158 | SymbolMap<ITaskInstance, ITask> uniqueTasks = harmonizeEventTaskInstancesModel(appData); |
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[1568] | 159 | |
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[1559] | 160 | ObjectDistanceSubstitionMatrix submat = new ObjectDistanceSubstitionMatrix( |
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| 161 | uniqueTasks, 5); |
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| 162 | submat.generate(); |
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| 163 | |
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[1568] | 164 | TriangleMatrix sequenceDistances = new TriangleMatrix(numberseqs.size()); |
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| 165 | |
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[1559] | 166 | for (int i = 0; i < numberseqs.size(); i++) { |
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[1568] | 167 | NumberSequence ns1 = numberseqs.get(i); |
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| 168 | //System.out.print("Sequence " + i + ": "); |
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| 169 | //ns1.printSequence(); |
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[1559] | 170 | for (int j = 0; j < numberseqs.size(); j++) { |
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| 171 | NumberSequence ns2 = numberseqs.get(j); |
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[1568] | 172 | |
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| 173 | if (i != j) { |
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| 174 | int smithWatermanThreshold = 10; |
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| 175 | |
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| 176 | SmithWatermanRepeated twoSequences = new SmithWatermanRepeated( |
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| 177 | ns1.getSequence(), ns2.getSequence(), submat, |
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| 178 | smithWatermanThreshold); |
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| 179 | SmithWatermanRepeated sameSequence1 = new SmithWatermanRepeated( |
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| 180 | ns1.getSequence(), ns1.getSequence(), submat, |
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| 181 | smithWatermanThreshold); |
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| 182 | SmithWatermanRepeated sameSequence2 = new SmithWatermanRepeated( |
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| 183 | ns2.getSequence(), ns2.getSequence(), submat, |
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| 184 | smithWatermanThreshold); |
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| 185 | |
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| 186 | SmithWatermanRepeated randomSequence = new SmithWatermanRepeated( |
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| 187 | ns1.shuffle().getSequence(),ns2.shuffle().getSequence(),submat,smithWatermanThreshold); |
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| 188 | //randomSequence.printDPMatrix(); |
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| 189 | //randomSequence.traceback(); |
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| 190 | |
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| 191 | double score = twoSequences.getAlignmentScore(); |
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| 192 | // Scores of the sequence beeing aligned to itself |
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| 193 | double sSelf1 = sameSequence1.getAlignmentScore(); |
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| 194 | double sSelf2 = sameSequence2.getAlignmentScore(); |
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| 195 | |
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| 196 | double sRand = randomSequence.getAlignmentScore(); |
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| 197 | |
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| 198 | double sMax = (sSelf1 + sSelf2) / 2; |
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| 199 | double sEff = (score - sRand)/ (sMax - sRand); |
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| 200 | double distance = -Math.log(sEff); |
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[1559] | 201 | |
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[1568] | 202 | System.out.println("Score: " + score + " sRand: " + sRand + " sMax: " + sMax + " sEff: " + sEff + " distance: " + distance); |
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| 203 | |
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| 204 | sequenceDistances.set(i,j,distance ); |
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| 205 | |
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| 206 | if (score > 0) { |
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| 207 | /* |
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| 208 | * System.out.println( |
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| 209 | * "================================================="); |
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| 210 | * System.out.println("| Sequence " + |
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| 211 | * String.format("%3d", i) +" Sequence " + |
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| 212 | * String.format("%3d", j) + " |"); |
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| 213 | * System.out.println( |
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| 214 | * "================================================="); |
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| 215 | * System.out.print("Sequence " + i + ": "); |
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| 216 | * ns1.printSequence(); System.out.print("Sequence " + j |
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| 217 | * + ": "); ns2.printSequence(); System.out.println(); |
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| 218 | * //System.out.println("Max Scrore: " + |
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| 219 | * sw.getMaxScore()); |
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| 220 | * System.out.println("Alignment Score: " + |
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| 221 | * sw.getAlignmentScore()); //sw.printDPMatrix(); |
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| 222 | * sw.traceback(); System.out.println(); |
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| 223 | * System.out.println(); |
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| 224 | */ |
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| 225 | } |
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[1559] | 226 | } |
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| 227 | } |
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| 228 | } |
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[1568] | 229 | //System.out.println(sequenceDistances.toString()); |
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| 230 | |
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[1559] | 231 | do { |
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| 232 | System.out.println(); |
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| 233 | FengDoolittle fd = new FengDoolittle(); |
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| 234 | |
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| 235 | // appData.getStopWatch().start("whole loop"); |
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| 236 | // detectAndReplaceIterations(appData); |
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| 237 | |
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| 238 | // appData.getStopWatch().start("task replacement"); |
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| 239 | // detectAndReplaceTasks(appData); |
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| 240 | // appData.getStopWatch().stop("task replacement"); |
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| 241 | // appData.getStopWatch().stop("whole loop"); |
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| 242 | |
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| 243 | // appData.getStopWatch().dumpStatistics(System.out); |
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| 244 | // appData.getStopWatch().reset(); |
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| 245 | |
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| 246 | } while (appData.detectedAndReplacedTasks()); |
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| 247 | |
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| 248 | Console.println("created " |
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| 249 | + appData.getResult().getNewlyCreatedTasks().size() |
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| 250 | + " new tasks and " |
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| 251 | + appData.getResult().getNewlyCreatedTaskInstances().size() |
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| 252 | + " appropriate instances\n"); |
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| 253 | |
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| 254 | if ((appData.getResult().getNewlyCreatedTasks().size() > 0) |
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| 255 | || (appData.getResult().getNewlyCreatedTaskInstances().size() > 0)) { |
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| 256 | appData.getResult().setRuleApplicationStatus( |
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| 257 | RuleApplicationStatus.FINISHED); |
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| 258 | } |
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| 259 | |
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| 260 | return appData.getResult(); |
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| 261 | } |
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| 262 | |
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| 263 | /** |
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| 264 | * <p> |
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| 265 | * harmonizes the event task instances by unifying tasks. This is done, as |
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| 266 | * initially the event tasks being equal with respect to the considered task |
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| 267 | * equality are distinct objects. The comparison of these distinct objects |
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| 268 | * is more time consuming than comparing the object references. |
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| 269 | * </p> |
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| 270 | * |
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| 271 | * @param appData |
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| 272 | * the rule application data combining all data used for applying |
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| 273 | * this rule |
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| 274 | * @return Returns the unique tasks symbol map |
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| 275 | */ |
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| 276 | private SymbolMap<ITaskInstance, ITask> harmonizeEventTaskInstancesModel( |
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| 277 | RuleApplicationData appData) { |
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| 278 | Console.traceln(Level.INFO, |
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| 279 | "harmonizing task model of event task instances"); |
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| 280 | appData.getStopWatch().start("harmonizing event tasks"); |
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| 281 | |
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| 282 | SymbolMap<ITaskInstance, ITask> uniqueTasks = preparationTaskHandlingStrategy |
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| 283 | .createSymbolMap(); |
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| 284 | TaskInstanceComparator comparator = preparationTaskHandlingStrategy |
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| 285 | .getTaskComparator(); |
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| 286 | |
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| 287 | int unifiedTasks = 0; |
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| 288 | ITask task; |
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| 289 | List<IUserSession> sessions = appData.getSessions(); |
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| 290 | int sessionNo = 0; |
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| 291 | numberseqs = new ArrayList<NumberSequence>(); |
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| 292 | for (IUserSession session : sessions) { |
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| 293 | Console.traceln(Level.FINE, "handling " + (++sessionNo) + ". " |
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| 294 | + session); |
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| 295 | NumberSequence templist = new NumberSequence(session.size()); |
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| 296 | |
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| 297 | for (int i = 0; i < session.size(); i++) { |
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| 298 | ITaskInstance taskInstance = session.get(i); |
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| 299 | task = uniqueTasks.getValue(taskInstance); |
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| 300 | |
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| 301 | if (task == null) { |
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| 302 | uniqueTasks.addSymbol(taskInstance, taskInstance.getTask()); |
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| 303 | templist.getSequence()[i] = taskInstance.getTask().getId(); |
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| 304 | } else { |
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| 305 | taskBuilder.setTask(taskInstance, task); |
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| 306 | templist.getSequence()[i] = task.getId(); |
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| 307 | unifiedTasks++; |
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| 308 | } |
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| 309 | } |
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| 310 | numberseqs.add(templist); |
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| 311 | comparator.clearBuffers(); |
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| 312 | } |
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| 313 | |
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| 314 | appData.getStopWatch().stop("harmonizing event tasks"); |
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| 315 | Console.traceln(Level.INFO, "harmonized " + unifiedTasks |
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| 316 | + " task occurrences (still " + uniqueTasks.size() |
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| 317 | + " different tasks)"); |
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| 318 | |
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| 319 | appData.getStopWatch().dumpStatistics(System.out); |
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| 320 | appData.getStopWatch().reset(); |
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[1554] | 321 | return uniqueTasks; |
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[1559] | 322 | } |
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[1552] | 323 | |
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[1559] | 324 | /** |
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| 325 | * <p> |
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| 326 | * searches for direct iterations of single tasks in all sequences and |
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| 327 | * replaces them with {@link IIteration}s, respectively appropriate |
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| 328 | * instances. Also all single occurrences of a task that is iterated |
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| 329 | * somewhen are replaced with iterations to have again an efficient way for |
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| 330 | * task comparisons. |
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| 331 | * </p> |
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| 332 | * |
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| 333 | * @param appData |
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| 334 | * the rule application data combining all data used for applying |
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| 335 | * this rule |
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| 336 | */ |
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| 337 | private void detectAndReplaceIterations(RuleApplicationData appData) { |
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| 338 | Console.traceln(Level.FINE, "detecting iterations"); |
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| 339 | appData.getStopWatch().start("detecting iterations"); |
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[1552] | 340 | |
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[1559] | 341 | List<IUserSession> sessions = appData.getSessions(); |
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[1552] | 342 | |
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[1559] | 343 | Set<ITask> iteratedTasks = searchIteratedTasks(sessions); |
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[1552] | 344 | |
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[1559] | 345 | if (iteratedTasks.size() > 0) { |
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| 346 | replaceIterationsOf(iteratedTasks, sessions, appData); |
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| 347 | } |
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[1552] | 348 | |
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[1559] | 349 | appData.getStopWatch().stop("detecting iterations"); |
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| 350 | Console.traceln(Level.INFO, "replaced " + iteratedTasks.size() |
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| 351 | + " iterated tasks"); |
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| 352 | } |
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[1552] | 353 | |
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[1559] | 354 | /** |
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| 355 | * <p> |
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| 356 | * searches the provided sessions for task iterations. If a task is |
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| 357 | * iterated, it is added to the returned set. |
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| 358 | * </p> |
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| 359 | * |
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| 360 | * @param the |
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| 361 | * session to search for iterations in |
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| 362 | * |
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| 363 | * @return a set of tasks being iterated somewhere |
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| 364 | */ |
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| 365 | private Set<ITask> searchIteratedTasks(List<IUserSession> sessions) { |
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| 366 | Set<ITask> iteratedTasks = new HashSet<ITask>(); |
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| 367 | for (IUserSession session : sessions) { |
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| 368 | for (int i = 0; i < (session.size() - 1); i++) { |
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| 369 | // we prepared the task instances to refer to unique tasks, if |
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| 370 | // they are treated |
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| 371 | // as equal. Therefore, we just compare the identity of the |
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| 372 | // tasks of the task |
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| 373 | // instances |
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| 374 | if (session.get(i).getTask() == session.get(i + 1).getTask()) { |
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| 375 | iteratedTasks.add(session.get(i).getTask()); |
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| 376 | } |
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| 377 | } |
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| 378 | } |
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[1552] | 379 | |
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[1559] | 380 | return iteratedTasks; |
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| 381 | } |
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[1552] | 382 | |
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[1559] | 383 | /** |
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| 384 | * <p> |
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| 385 | * replaces all occurrences of all tasks provided in the set with iterations |
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| 386 | * </p> |
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| 387 | * |
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| 388 | * @param iteratedTasks |
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| 389 | * the tasks to be replaced with iterations |
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| 390 | * @param sessions |
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| 391 | * the sessions in which the tasks are to be replaced |
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| 392 | * @param appData |
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| 393 | * the rule application data combining all data used for applying |
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| 394 | * this rule |
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| 395 | */ |
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| 396 | private void replaceIterationsOf(Set<ITask> iteratedTasks, |
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| 397 | List<IUserSession> sessions, RuleApplicationData appData) { |
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| 398 | Map<ITask, IIteration> iterations = new HashMap<ITask, IIteration>(); |
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| 399 | Map<IIteration, List<IIterationInstance>> iterationInstances = new HashMap<IIteration, List<IIterationInstance>>(); |
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[1552] | 400 | |
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[1559] | 401 | for (ITask iteratedTask : iteratedTasks) { |
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| 402 | IIteration iteration = taskFactory.createNewIteration(); |
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| 403 | iterations.put(iteratedTask, iteration); |
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| 404 | iterationInstances.put(iteration, |
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| 405 | new LinkedList<IIterationInstance>()); |
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| 406 | } |
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[1552] | 407 | |
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[1559] | 408 | IIterationInstance iterationInstance; |
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[1552] | 409 | |
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[1559] | 410 | for (IUserSession session : sessions) { |
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| 411 | int index = 0; |
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| 412 | iterationInstance = null; |
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[1552] | 413 | |
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[1559] | 414 | while (index < session.size()) { |
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| 415 | // we prepared the task instances to refer to unique tasks, if |
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| 416 | // they are treated |
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| 417 | // as equal. Therefore, we just compare the identity of the |
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| 418 | // tasks of the task |
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| 419 | // instances |
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| 420 | ITask currentTask = session.get(index).getTask(); |
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| 421 | IIteration iteration = iterations.get(currentTask); |
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| 422 | if (iteration != null) { |
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| 423 | if ((iterationInstance == null) |
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| 424 | || (iterationInstance.getTask() != iteration)) { |
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| 425 | iterationInstance = taskFactory |
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| 426 | .createNewTaskInstance(iteration); |
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| 427 | iterationInstances.get(iteration) |
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| 428 | .add(iterationInstance); |
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| 429 | taskBuilder.addTaskInstance(session, index, |
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| 430 | iterationInstance); |
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| 431 | index++; |
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| 432 | } |
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[1552] | 433 | |
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[1559] | 434 | taskBuilder.addChild(iterationInstance, session.get(index)); |
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| 435 | taskBuilder.removeTaskInstance(session, index); |
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| 436 | } else { |
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| 437 | if (iterationInstance != null) { |
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| 438 | iterationInstance = null; |
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| 439 | } |
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| 440 | index++; |
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| 441 | } |
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| 442 | } |
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| 443 | } |
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[1552] | 444 | |
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[1559] | 445 | for (Map.Entry<IIteration, List<IIterationInstance>> entry : iterationInstances |
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| 446 | .entrySet()) { |
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| 447 | harmonizeIterationInstancesModel(entry.getKey(), entry.getValue()); |
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| 448 | } |
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| 449 | } |
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[1552] | 450 | |
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[1559] | 451 | /** |
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| 452 | * <p> |
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| 453 | * TODO clarify why this is done |
---|
| 454 | * </p> |
---|
| 455 | */ |
---|
| 456 | private void harmonizeIterationInstancesModel(IIteration iteration, |
---|
| 457 | List<IIterationInstance> iterationInstances) { |
---|
| 458 | List<ITask> iteratedTaskVariants = new LinkedList<ITask>(); |
---|
| 459 | TaskInstanceComparator comparator = preparationTaskHandlingStrategy |
---|
| 460 | .getTaskComparator(); |
---|
[1552] | 461 | |
---|
[1559] | 462 | // merge the lexically different variants of iterated task to a unique |
---|
| 463 | // list |
---|
| 464 | for (IIterationInstance iterationInstance : iterationInstances) { |
---|
| 465 | for (ITaskInstance executionVariant : iterationInstance) { |
---|
| 466 | ITask candidate = executionVariant.getTask(); |
---|
[1552] | 467 | |
---|
[1559] | 468 | boolean found = false; |
---|
| 469 | for (ITask taskVariant : iteratedTaskVariants) { |
---|
| 470 | if (comparator.areLexicallyEqual(taskVariant, candidate)) { |
---|
| 471 | taskBuilder.setTask(executionVariant, taskVariant); |
---|
| 472 | found = true; |
---|
| 473 | break; |
---|
| 474 | } |
---|
| 475 | } |
---|
[1552] | 476 | |
---|
[1559] | 477 | if (!found) { |
---|
| 478 | iteratedTaskVariants.add(candidate); |
---|
| 479 | } |
---|
| 480 | } |
---|
| 481 | } |
---|
[1552] | 482 | |
---|
[1559] | 483 | // if there are more than one lexically different variant of iterated |
---|
| 484 | // tasks, adapt the |
---|
| 485 | // iteration model to be a selection of different variants. In this case |
---|
| 486 | // also adapt |
---|
| 487 | // the generated iteration instances to correctly contain selection |
---|
| 488 | // instances. If there |
---|
| 489 | // is only one variant of an iterated task, simply set this as the |
---|
| 490 | // marked task of the |
---|
| 491 | // iteration. In this case, the instances can be preserved as is |
---|
| 492 | if (iteratedTaskVariants.size() > 1) { |
---|
| 493 | ISelection selection = taskFactory.createNewSelection(); |
---|
| 494 | |
---|
| 495 | for (ITask variant : iteratedTaskVariants) { |
---|
| 496 | taskBuilder.addChild(selection, variant); |
---|
| 497 | } |
---|
| 498 | |
---|
| 499 | taskBuilder.setMarkedTask(iteration, selection); |
---|
| 500 | |
---|
| 501 | for (IIterationInstance instance : iterationInstances) { |
---|
| 502 | for (int i = 0; i < instance.size(); i++) { |
---|
| 503 | ISelectionInstance selectionInstance = taskFactory |
---|
| 504 | .createNewTaskInstance(selection); |
---|
| 505 | taskBuilder.setChild(selectionInstance, instance.get(i)); |
---|
| 506 | taskBuilder.setTaskInstance(instance, i, selectionInstance); |
---|
| 507 | } |
---|
| 508 | } |
---|
| 509 | } else { |
---|
| 510 | taskBuilder.setMarkedTask(iteration, iteratedTaskVariants.get(0)); |
---|
| 511 | } |
---|
| 512 | } |
---|
| 513 | |
---|
| 514 | /** |
---|
| 515 | * TODO go on commenting |
---|
| 516 | * |
---|
| 517 | * @param appData |
---|
| 518 | * the rule application data combining all data used for applying |
---|
| 519 | * this rule |
---|
| 520 | */ |
---|
| 521 | private void detectAndReplaceTasks(RuleApplicationData appData) { |
---|
| 522 | Console.traceln(Level.FINE, "detecting and replacing tasks"); |
---|
| 523 | appData.getStopWatch().start("detecting tasks"); |
---|
| 524 | |
---|
| 525 | getSequencesOccuringMostOften(appData); |
---|
| 526 | |
---|
| 527 | appData.getStopWatch().stop("detecting tasks"); |
---|
| 528 | appData.getStopWatch().start("replacing tasks"); |
---|
| 529 | |
---|
| 530 | replaceSequencesOccurringMostOften(appData); |
---|
| 531 | |
---|
| 532 | appData.getStopWatch().stop("replacing tasks"); |
---|
| 533 | Console.traceln(Level.INFO, "detected and replaced " |
---|
| 534 | + appData.getLastFoundTasks().size() + " tasks occuring " |
---|
| 535 | + appData.getLastFoundTasks().getOccurrenceCount() + " times"); |
---|
| 536 | } |
---|
| 537 | |
---|
| 538 | /** |
---|
| 539 | * @param appData |
---|
| 540 | * the rule application data combining all data used for applying |
---|
| 541 | * this rule |
---|
| 542 | */ |
---|
| 543 | private void getSequencesOccuringMostOften(RuleApplicationData appData) { |
---|
| 544 | Console.traceln(Level.FINE, "determining most prominent tasks"); |
---|
| 545 | |
---|
| 546 | Tasks tasks; |
---|
| 547 | boolean createNewTrie = (appData.getLastTrie() == null) |
---|
| 548 | || appData.detectedAndReplacedTasks(); // tree has changed |
---|
| 549 | |
---|
| 550 | do { |
---|
| 551 | if (createNewTrie) { |
---|
| 552 | createNewTrie(appData); |
---|
| 553 | } |
---|
| 554 | |
---|
| 555 | MaxCountAndLongestTasksFinder finder = new MaxCountAndLongestTasksFinder(); |
---|
| 556 | appData.getLastTrie().process(finder); |
---|
| 557 | |
---|
| 558 | tasks = finder.getFoundTasks(); |
---|
| 559 | |
---|
| 560 | createNewTrie = false; |
---|
| 561 | |
---|
| 562 | for (List<ITaskInstance> task : tasks) { |
---|
| 563 | if (task.size() >= appData.getTrainedSequenceLength()) { |
---|
| 564 | // Trie must be recreated with a longer sequence length to |
---|
| 565 | // be sure that |
---|
| 566 | // the found sequences occurring most often are found in |
---|
| 567 | // their whole length |
---|
| 568 | appData.setTrainedSequenceLength(appData |
---|
| 569 | .getTrainedSequenceLength() + 1); |
---|
| 570 | createNewTrie = true; |
---|
| 571 | break; |
---|
| 572 | } |
---|
| 573 | } |
---|
| 574 | } while (createNewTrie); |
---|
| 575 | |
---|
| 576 | // create a normal trie for comparison |
---|
| 577 | /* |
---|
| 578 | * System.out.println("creating test trie for comparison"); |
---|
| 579 | * |
---|
| 580 | * appData.getStopWatch().start("testtrie"); Trie<ITaskInstance> trie = |
---|
| 581 | * new Trie<ITaskInstance>(identityTaskComparator); |
---|
| 582 | * |
---|
| 583 | * for (IUserSession session : appData.getSessions()) { |
---|
| 584 | * trie.train(session.getExecutedTasks(), |
---|
| 585 | * appData.getTrainedSequenceLength()); } |
---|
| 586 | * |
---|
| 587 | * appData.getStopWatch().stop("testtrie"); |
---|
| 588 | * |
---|
| 589 | * MaxCountAndLongestTasksFinder finder = new |
---|
| 590 | * MaxCountAndLongestTasksFinder(); trie.process(finder); |
---|
| 591 | * |
---|
| 592 | * boolean allTasksEqual = finder.getFoundTasks().size() == |
---|
| 593 | * tasks.size(); |
---|
| 594 | * |
---|
| 595 | * allTasksEqual &= finder.getFoundTasks().occurrenceCount == |
---|
| 596 | * tasks.occurrenceCount; |
---|
| 597 | * |
---|
| 598 | * for (List<ITaskInstance> task1 : finder.getFoundTasks()) { boolean |
---|
| 599 | * foundTask = false; for (List<ITaskInstance> task2 : tasks) { boolean |
---|
| 600 | * tasksEqual = false; if (task1.size() == task2.size()) { tasksEqual = |
---|
| 601 | * true; for (int i = 0; i < task1.size(); i++) { if |
---|
| 602 | * (!identityTaskComparator.equals(task1.get(i).getTask(), |
---|
| 603 | * task2.get(i).getTask())) { tasksEqual = false; } } } |
---|
| 604 | * |
---|
| 605 | * if (tasksEqual) { foundTask = true; break; } } |
---|
| 606 | * |
---|
| 607 | * if (!foundTask) { System.out.println("different is " + task1); |
---|
| 608 | * allTasksEqual = false; break; } } |
---|
| 609 | * |
---|
| 610 | * if (!allTasksEqual) { System.out.println(finder.getFoundTasks()); |
---|
| 611 | * System.out.println(tasks); |
---|
| 612 | * |
---|
| 613 | * throw new |
---|
| 614 | * IllegalArgumentException("both tries calculated different subsequences" |
---|
| 615 | * ); } |
---|
| 616 | * |
---|
| 617 | * /*TrieStatisticsDumper dumper = new TrieStatisticsDumper(); |
---|
| 618 | * appData.getLastTrie().process(dumper); dumper.dumpCounters(); |
---|
| 619 | */ |
---|
| 620 | |
---|
| 621 | appData.setLastFoundTasks(tasks); |
---|
| 622 | |
---|
| 623 | Console.traceln(Level.FINE, "found " |
---|
| 624 | + appData.getLastFoundTasks().size() + " tasks " + "occurring " |
---|
| 625 | + appData.getLastFoundTasks().getOccurrenceCount() + " times"); |
---|
| 626 | } |
---|
| 627 | |
---|
| 628 | /** |
---|
| 629 | * @param appData |
---|
| 630 | * the rule application data combining all data used for applying |
---|
| 631 | * this rule |
---|
| 632 | */ |
---|
| 633 | private void createNewTrie(RuleApplicationData appData) { |
---|
| 634 | Console.traceln( |
---|
| 635 | Level.FINER, |
---|
| 636 | "training trie with a maximum sequence length of " |
---|
| 637 | + appData.getTrainedSequenceLength()); |
---|
| 638 | |
---|
| 639 | appData.getStopWatch().start("training trie"); |
---|
| 640 | |
---|
| 641 | // we prepared the task instances to refer to unique tasks, if they are |
---|
| 642 | // treated |
---|
| 643 | // as equal. Therefore, we just compare the identity of the tasks of the |
---|
| 644 | // task |
---|
| 645 | // instances |
---|
| 646 | appData.setLastTrie(new TaskInstanceTrie(identityTaskHandlingStrategy)); |
---|
| 647 | |
---|
| 648 | appData.getLastTrie().trainSessions(appData.getSessions(), |
---|
| 649 | appData.getTrainedSequenceLength()); |
---|
| 650 | |
---|
| 651 | appData.getStopWatch().stop("training trie"); |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | /** |
---|
| 655 | * @param appData |
---|
| 656 | * the rule application data combining all data used for applying |
---|
| 657 | * this rule |
---|
| 658 | */ |
---|
| 659 | private void replaceSequencesOccurringMostOften(RuleApplicationData appData) { |
---|
| 660 | appData.detectedAndReplacedTasks(false); |
---|
| 661 | |
---|
| 662 | if ((appData.getLastFoundTasks().size() > 0) |
---|
| 663 | && (appData.getLastFoundTasks().getOccurrenceCount() > 1)) { |
---|
| 664 | Console.traceln(Level.FINER, "replacing tasks occurrences"); |
---|
| 665 | |
---|
| 666 | for (List<ITaskInstance> task : appData.getLastFoundTasks()) { |
---|
| 667 | ISequence sequence = taskFactory.createNewSequence(); |
---|
| 668 | |
---|
| 669 | Console.traceln(Level.FINEST, "replacing " + sequence.getId() |
---|
| 670 | + ": " + task); |
---|
| 671 | |
---|
| 672 | List<ISequenceInstance> sequenceInstances = replaceTaskOccurrences( |
---|
| 673 | task, appData.getSessions(), sequence); |
---|
| 674 | |
---|
| 675 | harmonizeSequenceInstancesModel(sequence, sequenceInstances, |
---|
| 676 | task.size()); |
---|
| 677 | appData.detectedAndReplacedTasks(appData |
---|
| 678 | .detectedAndReplacedTasks() |
---|
| 679 | || (sequenceInstances.size() > 0)); |
---|
| 680 | |
---|
| 681 | if (sequenceInstances.size() < appData.getLastFoundTasks() |
---|
| 682 | .getOccurrenceCount()) { |
---|
| 683 | Console.traceln(Level.FINE, |
---|
| 684 | sequence.getId() |
---|
| 685 | + ": replaced task only " |
---|
| 686 | + sequenceInstances.size() |
---|
| 687 | + " times instead of expected " |
---|
| 688 | + appData.getLastFoundTasks() |
---|
| 689 | .getOccurrenceCount()); |
---|
| 690 | } |
---|
| 691 | } |
---|
| 692 | } |
---|
| 693 | |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | /** |
---|
[1552] | 697 | * |
---|
| 698 | */ |
---|
[1559] | 699 | private void harmonizeSequenceInstancesModel(ISequence sequence, |
---|
| 700 | List<ISequenceInstance> sequenceInstances, int sequenceLength) { |
---|
| 701 | TaskInstanceComparator comparator = preparationTaskHandlingStrategy |
---|
| 702 | .getTaskComparator(); |
---|
[1552] | 703 | |
---|
[1559] | 704 | // ensure for each subtask that lexically different variants are |
---|
| 705 | // preserved |
---|
| 706 | for (int subTaskIndex = 0; subTaskIndex < sequenceLength; subTaskIndex++) { |
---|
| 707 | List<ITask> subTaskVariants = new LinkedList<ITask>(); |
---|
[1552] | 708 | |
---|
[1559] | 709 | for (ISequenceInstance sequenceInstance : sequenceInstances) { |
---|
| 710 | ITask candidate = sequenceInstance.get(subTaskIndex).getTask(); |
---|
[1552] | 711 | |
---|
[1559] | 712 | boolean found = false; |
---|
[1552] | 713 | |
---|
[1559] | 714 | for (int i = 0; i < subTaskVariants.size(); i++) { |
---|
| 715 | if (comparator.areLexicallyEqual(subTaskVariants.get(i), |
---|
| 716 | candidate)) { |
---|
| 717 | taskBuilder.setTask(sequenceInstance.get(subTaskIndex), |
---|
| 718 | subTaskVariants.get(i)); |
---|
| 719 | |
---|
| 720 | found = true; |
---|
| 721 | break; |
---|
| 722 | } |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | if (!found) { |
---|
| 726 | subTaskVariants.add(candidate); |
---|
| 727 | } |
---|
| 728 | } |
---|
| 729 | |
---|
| 730 | // if there are more than one lexically different variant of the sub |
---|
| 731 | // task at |
---|
| 732 | // the considered position, adapt the sequence model at that |
---|
| 733 | // position to have |
---|
| 734 | // a selection of the different variants. In this case also adapt |
---|
| 735 | // the |
---|
| 736 | // generated sequence instances to correctly contain selection |
---|
| 737 | // instances. If |
---|
| 738 | // there is only one variant of sub tasks at the given position, |
---|
| 739 | // simply set |
---|
| 740 | // this variant as the sub task of the selection. In this case, the |
---|
| 741 | // instances |
---|
| 742 | // can be preserved as is |
---|
| 743 | if (subTaskVariants.size() > 1) { |
---|
| 744 | ISelection selection = taskFactory.createNewSelection(); |
---|
| 745 | |
---|
| 746 | for (ITask variant : subTaskVariants) { |
---|
| 747 | taskBuilder.addChild(selection, variant); |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | taskBuilder.addChild(sequence, selection); |
---|
| 751 | |
---|
| 752 | for (ISequenceInstance instance : sequenceInstances) { |
---|
| 753 | ISelectionInstance selectionInstance = taskFactory |
---|
| 754 | .createNewTaskInstance(selection); |
---|
| 755 | taskBuilder.setChild(selectionInstance, |
---|
| 756 | instance.get(subTaskIndex)); |
---|
| 757 | taskBuilder.setTaskInstance(instance, subTaskIndex, |
---|
| 758 | selectionInstance); |
---|
| 759 | } |
---|
| 760 | } else if (subTaskVariants.size() == 1) { |
---|
| 761 | taskBuilder.addChild(sequence, subTaskVariants.get(0)); |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | } |
---|
| 765 | |
---|
| 766 | /** |
---|
| 767 | * @param tree |
---|
| 768 | */ |
---|
| 769 | private List<ISequenceInstance> replaceTaskOccurrences( |
---|
| 770 | List<ITaskInstance> task, List<IUserSession> sessions, |
---|
| 771 | ISequence temporalTaskModel) { |
---|
| 772 | List<ISequenceInstance> sequenceInstances = new LinkedList<ISequenceInstance>(); |
---|
| 773 | |
---|
| 774 | for (IUserSession session : sessions) { |
---|
| 775 | int index = -1; |
---|
| 776 | |
---|
| 777 | do { |
---|
| 778 | index = getSubListIndex(session, task, ++index); |
---|
| 779 | |
---|
| 780 | if (index > -1) { |
---|
| 781 | sequenceInstances.add(RuleUtils |
---|
| 782 | .createNewSubSequenceInRange(session, index, index |
---|
| 783 | + task.size() - 1, temporalTaskModel, |
---|
| 784 | taskFactory, taskBuilder)); |
---|
| 785 | } |
---|
| 786 | } while (index > -1); |
---|
| 787 | } |
---|
| 788 | |
---|
| 789 | return sequenceInstances; |
---|
| 790 | } |
---|
| 791 | |
---|
| 792 | /** |
---|
| 793 | * @param trie |
---|
| 794 | * @param object |
---|
| 795 | * @return |
---|
| 796 | */ |
---|
| 797 | private int getSubListIndex(ITaskInstanceList list, |
---|
| 798 | List<ITaskInstance> subList, int startIndex) { |
---|
| 799 | boolean matchFound; |
---|
| 800 | int result = -1; |
---|
| 801 | |
---|
| 802 | for (int i = startIndex; i <= list.size() - subList.size(); i++) { |
---|
| 803 | matchFound = true; |
---|
| 804 | |
---|
| 805 | for (int j = 0; j < subList.size(); j++) { |
---|
| 806 | // we prepared the task instances to refer to unique tasks, if |
---|
| 807 | // they are treated |
---|
| 808 | // as equal. Therefore, we just compare the identity of the |
---|
| 809 | // tasks of the task |
---|
| 810 | // instances |
---|
| 811 | if (list.get(i + j).getTask() != subList.get(j).getTask()) { |
---|
| 812 | matchFound = false; |
---|
| 813 | break; |
---|
| 814 | } |
---|
| 815 | } |
---|
| 816 | |
---|
| 817 | if (matchFound) { |
---|
| 818 | result = i; |
---|
| 819 | break; |
---|
| 820 | } |
---|
| 821 | } |
---|
| 822 | |
---|
| 823 | return result; |
---|
| 824 | } |
---|
| 825 | |
---|
| 826 | /** |
---|
| 827 | * @param trie |
---|
| 828 | * @param object |
---|
| 829 | * @return |
---|
| 830 | */ |
---|
| 831 | private int getSubListIndex(List<ITaskInstance> list, |
---|
| 832 | List<ITaskInstance> subList, int startIndex) { |
---|
| 833 | boolean matchFound; |
---|
| 834 | int result = -1; |
---|
| 835 | |
---|
| 836 | for (int i = startIndex; i <= list.size() - subList.size(); i++) { |
---|
| 837 | matchFound = true; |
---|
| 838 | |
---|
| 839 | for (int j = 0; j < subList.size(); j++) { |
---|
| 840 | // we prepared the task instances to refer to unique tasks, if |
---|
| 841 | // they are treated |
---|
| 842 | // as equal. Therefore, we just compare the identity of the |
---|
| 843 | // tasks of the task |
---|
| 844 | // instances |
---|
| 845 | if (list.get(i + j) != subList.get(j)) { |
---|
| 846 | matchFound = false; |
---|
| 847 | break; |
---|
| 848 | } |
---|
| 849 | } |
---|
| 850 | |
---|
| 851 | if (matchFound) { |
---|
| 852 | result = i; |
---|
| 853 | break; |
---|
| 854 | } |
---|
| 855 | } |
---|
| 856 | |
---|
| 857 | return result; |
---|
| 858 | } |
---|
| 859 | |
---|
| 860 | /** |
---|
| 861 | * @author Patrick Harms |
---|
| 862 | */ |
---|
| 863 | private class MaxCountAndLongestTasksFinder implements |
---|
| 864 | TrieProcessor<ITaskInstance> { |
---|
| 865 | |
---|
| 866 | /** |
---|
[1552] | 867 | * |
---|
| 868 | */ |
---|
[1559] | 869 | private int currentCount; |
---|
| 870 | |
---|
| 871 | /** |
---|
[1552] | 872 | * |
---|
| 873 | */ |
---|
[1559] | 874 | private List<List<ITaskInstance>> foundTasks = new LinkedList<List<ITaskInstance>>(); |
---|
[1552] | 875 | |
---|
[1559] | 876 | /** |
---|
[1552] | 877 | * |
---|
| 878 | */ |
---|
[1559] | 879 | public MaxCountAndLongestTasksFinder() { |
---|
| 880 | super(); |
---|
| 881 | this.currentCount = 0; |
---|
| 882 | } |
---|
[1552] | 883 | |
---|
[1559] | 884 | /* |
---|
| 885 | * (non-Javadoc) |
---|
| 886 | * |
---|
| 887 | * @see |
---|
| 888 | * de.ugoe.cs.autoquest.usageprofiles.TrieProcessor#process(java.util |
---|
| 889 | * .List, int) |
---|
| 890 | */ |
---|
| 891 | @Override |
---|
| 892 | public TrieProcessor.Result process(List<ITaskInstance> foundTask, |
---|
| 893 | int count) { |
---|
| 894 | if (foundTask.size() < 2) { |
---|
| 895 | // ignore single tasks |
---|
| 896 | return TrieProcessor.Result.CONTINUE; |
---|
| 897 | } |
---|
[1552] | 898 | |
---|
[1559] | 899 | if (count < 2) { |
---|
| 900 | // ignore singular occurrences |
---|
| 901 | return TrieProcessor.Result.SKIP_NODE; |
---|
| 902 | } |
---|
[1552] | 903 | |
---|
[1559] | 904 | if (this.currentCount > count) { |
---|
| 905 | // ignore this children of this task, as they may have only |
---|
| 906 | // smaller counts than |
---|
| 907 | // the already found tasks |
---|
| 908 | return TrieProcessor.Result.SKIP_NODE; |
---|
| 909 | } |
---|
[1552] | 910 | |
---|
[1559] | 911 | if (this.currentCount < count) { |
---|
| 912 | // the provided task occurs more often that all tasks found so |
---|
| 913 | // far. |
---|
| 914 | // clear all found tasks and use the new count as the one |
---|
| 915 | // searched for |
---|
| 916 | foundTasks.clear(); |
---|
| 917 | this.currentCount = count; |
---|
| 918 | } |
---|
| 919 | |
---|
| 920 | if (this.currentCount == count) { |
---|
| 921 | // the task is of interest. Sort it into the other found tasks |
---|
| 922 | // so that |
---|
| 923 | // the longest come first |
---|
| 924 | boolean added = false; |
---|
| 925 | for (int i = 0; i < foundTasks.size(); i++) { |
---|
| 926 | if (foundTasks.get(i).size() < foundTask.size()) { |
---|
| 927 | // defensive copy |
---|
| 928 | foundTasks.add(i, new LinkedList<ITaskInstance>( |
---|
| 929 | foundTask)); // defensive copy |
---|
| 930 | added = true; |
---|
| 931 | break; |
---|
| 932 | } |
---|
| 933 | } |
---|
| 934 | |
---|
| 935 | if (!added) { |
---|
| 936 | foundTasks.add(new LinkedList<ITaskInstance>(foundTask)); // defensive |
---|
| 937 | // copy |
---|
| 938 | } |
---|
| 939 | } |
---|
| 940 | |
---|
| 941 | return TrieProcessor.Result.CONTINUE; |
---|
| 942 | } |
---|
| 943 | |
---|
| 944 | /** |
---|
| 945 | * @return |
---|
| 946 | */ |
---|
| 947 | public Tasks getFoundTasks() { |
---|
| 948 | removePermutationsOfShorterTasks(); |
---|
| 949 | return new Tasks(currentCount, foundTasks); |
---|
| 950 | } |
---|
| 951 | |
---|
| 952 | /** |
---|
[1552] | 953 | * |
---|
| 954 | */ |
---|
[1559] | 955 | private void removePermutationsOfShorterTasks() { |
---|
| 956 | // now iterate the sorted list and for each task remove all other |
---|
| 957 | // tasks that are shorter |
---|
| 958 | // (i.e. come later in the sorted list) and that represent a subpart |
---|
| 959 | // of the task |
---|
| 960 | for (int i = 0; i < foundTasks.size(); i++) { |
---|
| 961 | for (int j = i + 1; j < foundTasks.size();) { |
---|
| 962 | if (foundTasks.get(j).size() < foundTasks.get(i).size()) { |
---|
| 963 | // found a task that is a potential subtask. Check for |
---|
| 964 | // this and remove the |
---|
| 965 | // subtask if needed |
---|
| 966 | List<ITaskInstance> longTask = foundTasks.get(i); |
---|
| 967 | List<ITaskInstance> shortTask = foundTasks.get(j); |
---|
[1552] | 968 | |
---|
[1559] | 969 | if (getSubListIndex(longTask, shortTask, 0) > -1) { |
---|
| 970 | foundTasks.remove(j); |
---|
| 971 | } else { |
---|
| 972 | j++; |
---|
| 973 | } |
---|
| 974 | } else { |
---|
| 975 | j++; |
---|
| 976 | } |
---|
| 977 | } |
---|
| 978 | } |
---|
| 979 | } |
---|
| 980 | |
---|
| 981 | } |
---|
| 982 | |
---|
| 983 | // /** |
---|
| 984 | // * @author Patrick Harms |
---|
| 985 | // */ |
---|
| 986 | // private class TrieStatisticsDumper implements |
---|
| 987 | // TrieProcessor<ITaskInstance> { |
---|
| 988 | // |
---|
| 989 | // /** |
---|
| 990 | // * |
---|
| 991 | // */ |
---|
| 992 | // private Map<Integer, Integer> counters = new HashMap<Integer, Integer>(); |
---|
| 993 | // |
---|
| 994 | // /* (non-Javadoc) |
---|
| 995 | // * @see |
---|
| 996 | // de.ugoe.cs.autoquest.usageprofiles.TrieProcessor#process(java.util.List, |
---|
| 997 | // int) |
---|
| 998 | // */ |
---|
| 999 | // @Override |
---|
| 1000 | // public TrieProcessor.Result process(List<ITaskInstance> subsequence, int |
---|
| 1001 | // count) { |
---|
| 1002 | // if (subsequence.size() == 1) { |
---|
| 1003 | // Integer value = counters.get(count); |
---|
| 1004 | // |
---|
| 1005 | // if (value == null) { |
---|
| 1006 | // value = 0; |
---|
| 1007 | // } |
---|
| 1008 | // |
---|
| 1009 | // counters.put(count, value + 1); |
---|
| 1010 | // |
---|
| 1011 | // return TrieProcessor.Result.CONTINUE; |
---|
| 1012 | // } |
---|
| 1013 | // else { |
---|
| 1014 | // // ignore singular occurrences |
---|
| 1015 | // return TrieProcessor.Result.SKIP_NODE; |
---|
| 1016 | // } |
---|
| 1017 | // } |
---|
| 1018 | // |
---|
| 1019 | // /** |
---|
| 1020 | // * @return |
---|
| 1021 | // */ |
---|
| 1022 | // public void dumpCounters() { |
---|
| 1023 | // int dumpedCounters = 0; |
---|
| 1024 | // |
---|
| 1025 | // int count = 1; |
---|
| 1026 | // while (dumpedCounters < counters.size()) { |
---|
| 1027 | // Integer value = counters.get(count++); |
---|
| 1028 | // if (value != null) { |
---|
| 1029 | // System.out.println(value + " symbols occurred " + count + " times"); |
---|
| 1030 | // dumpedCounters++; |
---|
| 1031 | // } |
---|
| 1032 | // } |
---|
| 1033 | // } |
---|
| 1034 | // |
---|
| 1035 | // } |
---|
| 1036 | |
---|
| 1037 | /** |
---|
[1552] | 1038 | * |
---|
| 1039 | */ |
---|
[1559] | 1040 | private static class RuleApplicationData { |
---|
| 1041 | |
---|
| 1042 | /** |
---|
[1552] | 1043 | * |
---|
| 1044 | */ |
---|
[1559] | 1045 | private List<IUserSession> sessions; |
---|
| 1046 | |
---|
| 1047 | /** |
---|
[1552] | 1048 | * |
---|
| 1049 | */ |
---|
[1559] | 1050 | private TaskInstanceTrie lastTrie; |
---|
| 1051 | |
---|
| 1052 | /** |
---|
| 1053 | * default and minimum trained sequence length is 3 |
---|
| 1054 | */ |
---|
| 1055 | private int trainedSequenceLength = 3; |
---|
| 1056 | |
---|
| 1057 | /** |
---|
[1552] | 1058 | * |
---|
| 1059 | */ |
---|
[1559] | 1060 | private Tasks lastFoundTasks = new Tasks(Integer.MAX_VALUE, null); |
---|
| 1061 | |
---|
| 1062 | /** |
---|
[1552] | 1063 | * |
---|
| 1064 | */ |
---|
[1559] | 1065 | private boolean detectedAndReplacedTasks; |
---|
| 1066 | |
---|
| 1067 | /** |
---|
[1552] | 1068 | * |
---|
| 1069 | */ |
---|
[1559] | 1070 | private RuleApplicationResult result = new RuleApplicationResult(); |
---|
| 1071 | |
---|
| 1072 | /** |
---|
[1552] | 1073 | * |
---|
| 1074 | */ |
---|
[1559] | 1075 | private StopWatch stopWatch = new StopWatch(); |
---|
| 1076 | |
---|
| 1077 | /** |
---|
[1552] | 1078 | * |
---|
| 1079 | */ |
---|
[1559] | 1080 | private RuleApplicationData(List<IUserSession> sessions) { |
---|
| 1081 | this.sessions = sessions; |
---|
| 1082 | } |
---|
[1552] | 1083 | |
---|
[1559] | 1084 | /** |
---|
| 1085 | * @return the tree |
---|
| 1086 | */ |
---|
| 1087 | private List<IUserSession> getSessions() { |
---|
| 1088 | return sessions; |
---|
| 1089 | } |
---|
[1552] | 1090 | |
---|
[1559] | 1091 | /** |
---|
| 1092 | * @param lastTrie |
---|
| 1093 | * the lastTrie to set |
---|
| 1094 | */ |
---|
| 1095 | private void setLastTrie(TaskInstanceTrie lastTrie) { |
---|
| 1096 | this.lastTrie = lastTrie; |
---|
| 1097 | } |
---|
[1552] | 1098 | |
---|
[1559] | 1099 | /** |
---|
| 1100 | * @return the lastTrie |
---|
| 1101 | */ |
---|
| 1102 | private TaskInstanceTrie getLastTrie() { |
---|
| 1103 | return lastTrie; |
---|
| 1104 | } |
---|
[1552] | 1105 | |
---|
[1559] | 1106 | /** |
---|
| 1107 | * @param trainedSequenceLength |
---|
| 1108 | * the trainedSequenceLength to set |
---|
| 1109 | */ |
---|
| 1110 | private void setTrainedSequenceLength(int trainedSequenceLength) { |
---|
| 1111 | this.trainedSequenceLength = trainedSequenceLength; |
---|
| 1112 | } |
---|
[1552] | 1113 | |
---|
[1559] | 1114 | /** |
---|
| 1115 | * @return the trainedSequenceLength |
---|
| 1116 | */ |
---|
| 1117 | private int getTrainedSequenceLength() { |
---|
| 1118 | return trainedSequenceLength; |
---|
| 1119 | } |
---|
[1552] | 1120 | |
---|
[1559] | 1121 | /** |
---|
| 1122 | * @param lastFoundSequences |
---|
| 1123 | * the lastFoundSequences to set |
---|
| 1124 | */ |
---|
| 1125 | private void setLastFoundTasks(Tasks lastFoundSequences) { |
---|
| 1126 | this.lastFoundTasks = lastFoundSequences; |
---|
| 1127 | } |
---|
[1552] | 1128 | |
---|
[1559] | 1129 | /** |
---|
| 1130 | * @return the lastFoundSequences |
---|
| 1131 | */ |
---|
| 1132 | private Tasks getLastFoundTasks() { |
---|
| 1133 | return lastFoundTasks; |
---|
| 1134 | } |
---|
[1552] | 1135 | |
---|
[1559] | 1136 | /** |
---|
[1552] | 1137 | * |
---|
| 1138 | */ |
---|
[1559] | 1139 | private void detectedAndReplacedTasks(boolean detectedAndReplacedTasks) { |
---|
| 1140 | this.detectedAndReplacedTasks = detectedAndReplacedTasks; |
---|
| 1141 | } |
---|
[1552] | 1142 | |
---|
[1559] | 1143 | /** |
---|
[1552] | 1144 | * |
---|
| 1145 | */ |
---|
[1559] | 1146 | private boolean detectedAndReplacedTasks() { |
---|
| 1147 | return detectedAndReplacedTasks; |
---|
| 1148 | } |
---|
[1552] | 1149 | |
---|
[1559] | 1150 | /** |
---|
| 1151 | * @return the result |
---|
| 1152 | */ |
---|
| 1153 | private RuleApplicationResult getResult() { |
---|
| 1154 | return result; |
---|
| 1155 | } |
---|
[1552] | 1156 | |
---|
[1559] | 1157 | /** |
---|
| 1158 | * @return the stopWatch |
---|
| 1159 | */ |
---|
| 1160 | private StopWatch getStopWatch() { |
---|
| 1161 | return stopWatch; |
---|
| 1162 | } |
---|
[1552] | 1163 | |
---|
[1559] | 1164 | } |
---|
| 1165 | |
---|
| 1166 | /** |
---|
| 1167 | * @author Patrick Harms |
---|
| 1168 | */ |
---|
| 1169 | private static class Tasks implements Iterable<List<ITaskInstance>> { |
---|
| 1170 | |
---|
| 1171 | /** |
---|
[1552] | 1172 | * |
---|
| 1173 | */ |
---|
[1559] | 1174 | private int occurrenceCount; |
---|
| 1175 | |
---|
| 1176 | /** |
---|
[1552] | 1177 | * |
---|
| 1178 | */ |
---|
[1559] | 1179 | private List<List<ITaskInstance>> sequences; |
---|
[1552] | 1180 | |
---|
[1559] | 1181 | /** |
---|
| 1182 | * @param occurrenceCount |
---|
| 1183 | * @param sequences |
---|
| 1184 | */ |
---|
| 1185 | private Tasks(int occurrenceCount, List<List<ITaskInstance>> sequences) { |
---|
| 1186 | super(); |
---|
| 1187 | this.occurrenceCount = occurrenceCount; |
---|
| 1188 | this.sequences = sequences; |
---|
| 1189 | } |
---|
[1552] | 1190 | |
---|
[1559] | 1191 | /** |
---|
| 1192 | * @return |
---|
| 1193 | */ |
---|
| 1194 | private int getOccurrenceCount() { |
---|
| 1195 | return occurrenceCount; |
---|
| 1196 | } |
---|
[1552] | 1197 | |
---|
[1559] | 1198 | /** |
---|
| 1199 | * @return |
---|
| 1200 | */ |
---|
| 1201 | private int size() { |
---|
| 1202 | return this.sequences.size(); |
---|
| 1203 | } |
---|
[1552] | 1204 | |
---|
[1559] | 1205 | /** |
---|
[1552] | 1206 | * |
---|
| 1207 | */ |
---|
| 1208 | |
---|
[1559] | 1209 | /* |
---|
| 1210 | * (non-Javadoc) |
---|
| 1211 | * |
---|
| 1212 | * @see java.lang.Iterable#iterator() |
---|
| 1213 | */ |
---|
| 1214 | @Override |
---|
| 1215 | public Iterator<List<ITaskInstance>> iterator() { |
---|
| 1216 | return this.sequences.iterator(); |
---|
| 1217 | } |
---|
[1552] | 1218 | |
---|
[1559] | 1219 | /* |
---|
| 1220 | * (non-Javadoc) |
---|
| 1221 | * |
---|
| 1222 | * @see java.lang.Object#toString() |
---|
| 1223 | */ |
---|
| 1224 | @Override |
---|
| 1225 | public String toString() { |
---|
| 1226 | StringBuffer result = new StringBuffer(); |
---|
| 1227 | result.append(this.occurrenceCount); |
---|
| 1228 | result.append(" occurrences:\n"); |
---|
[1552] | 1229 | |
---|
[1559] | 1230 | for (List<ITaskInstance> task : sequences) { |
---|
| 1231 | result.append(task); |
---|
| 1232 | result.append("\n"); |
---|
| 1233 | } |
---|
[1552] | 1234 | |
---|
[1559] | 1235 | return result.toString(); |
---|
| 1236 | } |
---|
| 1237 | |
---|
| 1238 | } |
---|
| 1239 | |
---|
| 1240 | // methods for internal testing |
---|
| 1241 | // private void checkMatchingOfSessions(List<List<Event>> flattenedSessions, |
---|
| 1242 | // List<IUserSession> sessions, |
---|
| 1243 | // String when) |
---|
| 1244 | // { |
---|
| 1245 | // List<List<Event>> currentFlattenedSessions = flattenSessions(sessions); |
---|
| 1246 | // if (flattenedSessions.size() != currentFlattenedSessions.size()) { |
---|
| 1247 | // System.out.println("################## number of sessions changed after " |
---|
| 1248 | // + when); |
---|
| 1249 | // } |
---|
| 1250 | // else { |
---|
| 1251 | // for (int i = 0; i < flattenedSessions.size(); i++) { |
---|
| 1252 | // List<Event> expected = flattenedSessions.get(i); |
---|
| 1253 | // List<Event> current = currentFlattenedSessions.get(i); |
---|
| 1254 | // |
---|
| 1255 | // if (expected.size() != current.size()) { |
---|
| 1256 | // System.out.println |
---|
| 1257 | // ("################## length of session " + i + " changed after " + when); |
---|
| 1258 | // } |
---|
| 1259 | // else { |
---|
| 1260 | // for (int j = 0; j < expected.size(); j++) { |
---|
| 1261 | // if (!expected.get(j).equals(current.get(j))) { |
---|
| 1262 | // System.out.println("################## event " + j + " of session " + |
---|
| 1263 | // i + " changed after " + when); |
---|
| 1264 | // } |
---|
| 1265 | // } |
---|
| 1266 | // } |
---|
| 1267 | // } |
---|
| 1268 | // } |
---|
| 1269 | // } |
---|
| 1270 | // |
---|
| 1271 | // private List<List<Event>> flattenSessions(List<IUserSession> sessions) { |
---|
| 1272 | // List<List<Event>> flattenedSessions = new ArrayList<List<Event>>(); |
---|
| 1273 | // for (IUserSession session : sessions) { |
---|
| 1274 | // List<Event> flattenedUserSession = new ArrayList<Event>(); |
---|
| 1275 | // flatten(session, flattenedUserSession); |
---|
| 1276 | // flattenedSessions.add(flattenedUserSession); |
---|
| 1277 | // } |
---|
| 1278 | // |
---|
| 1279 | // return flattenedSessions; |
---|
| 1280 | // } |
---|
| 1281 | // |
---|
| 1282 | // private void flatten(IUserSession iUserSession, List<Event> |
---|
| 1283 | // flattenedUserSession) { |
---|
| 1284 | // for (ITaskInstance instance : iUserSession) { |
---|
| 1285 | // flatten(instance, flattenedUserSession); |
---|
| 1286 | // } |
---|
| 1287 | // } |
---|
| 1288 | // |
---|
| 1289 | // private void flatten(ITaskInstance instance, List<Event> |
---|
| 1290 | // flattenedUserSession) { |
---|
| 1291 | // if (instance instanceof ITaskInstanceList) { |
---|
| 1292 | // for (ITaskInstance child : (ITaskInstanceList) instance) { |
---|
| 1293 | // flatten(child, flattenedUserSession); |
---|
| 1294 | // } |
---|
| 1295 | // } |
---|
| 1296 | // else if (instance instanceof ISelectionInstance) { |
---|
| 1297 | // flatten(((ISelectionInstance) instance).getChild(), |
---|
| 1298 | // flattenedUserSession); |
---|
| 1299 | // } |
---|
| 1300 | // else if (instance instanceof IOptionalInstance) { |
---|
| 1301 | // flatten(((IOptionalInstance) instance).getChild(), flattenedUserSession); |
---|
| 1302 | // } |
---|
| 1303 | // else if (instance instanceof IEventTaskInstance) { |
---|
| 1304 | // flattenedUserSession.add(((IEventTaskInstance) instance).getEvent()); |
---|
| 1305 | // } |
---|
| 1306 | // } |
---|
| 1307 | |
---|
[1552] | 1308 | } |
---|