1 | package de.ugoe.cs.autoquest.usability.evaluation.rule.evaluator;
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2 |
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3 | import static de.ugoe.cs.autoquest.usability.tasktree.filter.EventTypeFilter.TEXT_INPUT;
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4 | import static de.ugoe.cs.autoquest.usability.util.TextInputUtil.aggregateEnteredTextFromTextInputs;
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5 |
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6 | import com.google.common.base.Optional;
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7 | import com.google.common.base.Predicate;
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8 | import com.google.common.collect.Multiset;
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9 | import com.google.common.collect.Multisets;
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10 |
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11 | import de.ugoe.cs.autoquest.tasktrees.treeifc.ITaskTree;
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12 | import de.ugoe.cs.autoquest.usability.evaluation.result.UsabilityDefectSeverityLevel;
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13 | import de.ugoe.cs.autoquest.usability.evaluation.rule.set.UsabilityRule;
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14 | import de.ugoe.cs.autoquest.usability.tasktree.filter.FilterStatistic;
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15 | import de.ugoe.cs.autoquest.usability.tasktree.filter.IterativeDFSFilterStrategy;
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16 | import de.ugoe.cs.autoquest.usability.tasktree.filter.TaskTreeFilter;
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17 |
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18 | public class TextInputEntryRepetitionsEvaluator extends RuleEvaluator {
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19 |
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20 | public TextInputEntryRepetitionsEvaluator(UsabilityRule evaluatedUsabilityRule, ITaskTree taskTree) {
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21 | super(evaluatedUsabilityRule, taskTree);
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22 | }
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23 |
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24 | @Override
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25 | protected FilterStatistic nodesUnderEvaluation(ITaskTree taskTree) {
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26 | Optional<FilterStatistic> cachedNodes = loadFromCache(TEXT_INPUT);
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27 | return cachedNodes.isPresent() ? cachedNodes.get() : cacheAndReturnNodes(taskTree, TEXT_INPUT);
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28 | }
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29 |
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30 | @Override
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31 | protected FilterStatistic extractNodesFromTaskTree(ITaskTree taskTree) {
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32 | return new TaskTreeFilter(new IterativeDFSFilterStrategy())
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33 | .filterByEventType(TEXT_INPUT).from(taskTree);
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34 | }
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35 |
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36 | @Override
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37 | protected float calculateEvaluationMetric() {
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38 | Multiset<String> enteredTextFragments = aggregateEnteredTextFromTextInputs(this.filteredNodes.nodesMatchedFilter());
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39 | Multiset<String> orderedTextFragmentsWithMultipleOccurences = onlyTextFragmentsWithMultipleOccurences(enteredTextFragments);
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40 | if(orderedTextFragmentsWithMultipleOccurences.isEmpty()) return 0;
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41 | String wordWithHighestRepetitionInTextFragments = orderedTextFragmentsWithMultipleOccurences.iterator().next();
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42 | int numberOfRepeatedWords = orderedTextFragmentsWithMultipleOccurences.entrySet().size();
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43 | int maxRepetitions = orderedTextFragmentsWithMultipleOccurences.count(wordWithHighestRepetitionInTextFragments);
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44 | return Math.max(numberOfRepeatedWords, maxRepetitions);
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45 | }
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46 |
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47 | private Multiset<String> onlyTextFragmentsWithMultipleOccurences(final Multiset<String> allTextInputs) {
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48 | return Multisets.copyHighestCountFirst(Multisets.filter(allTextInputs, new Predicate<String>() {
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49 |
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50 | @Override
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51 | public boolean apply(String word) {
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52 | return allTextInputs.count(word) > 1;
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53 | }
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54 |
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55 | }));
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56 | }
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57 |
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58 | @Override
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59 | protected Optional<UsabilityDefectSeverityLevel> determineSeverityLevel(float evaluationMetric) {
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60 | Optional<UsabilityDefectSeverityLevel> recommendationSeverityLevel = Optional.absent();
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61 | if (evaluationMetric > 10) {
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62 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.HIGH);
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63 | }
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64 | else if (evaluationMetric > 4) {
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65 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.MEDIUM);
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66 | }
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67 | else if (evaluationMetric > 2) {
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68 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.LOW);
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69 | }
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70 | else if (evaluationMetric > 1) {
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71 | recommendationSeverityLevel = Optional.of(UsabilityDefectSeverityLevel.INFO);
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72 | }
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73 | return recommendationSeverityLevel;
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74 | }
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75 |
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76 | }
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