| 1 | package de.uka.ipd.sdq.tcfmoop.terminationcriteria; |
| 2 | |
| 3 | import org.opt4j.core.Archive; |
| 4 | import org.opt4j.core.Population; |
| 5 | |
| 6 | import de.uka.ipd.sdq.tcfmoop.config.IConfiguration; |
| 7 | import de.uka.ipd.sdq.tcfmoop.config.MaxGenerationNumberConfig; |
| 8 | import de.uka.ipd.sdq.tcfmoop.outputtree.Node; |
| 9 | import de.uka.ipd.sdq.tcfmoop.outputtree.Node.NodeType; |
| 10 | |
| 11 | public class MaxGenerationNumber extends AbstractTerminationCriterion { |
| 12 | |
| 13 | //The maximum number of iterations that the optimization algorithm should execute. |
| 14 | private int maximumNumberOfGenerations; |
| 15 | //Executed iterations so far. |
| 16 | private int generationsSoFar; |
| 17 | |
| 18 | //OutputNodes |
| 19 | //dynamic |
| 20 | private Node currentMaxGenNode; |
| 21 | |
| 22 | public MaxGenerationNumber(IConfiguration conf, Population population, Archive archive) { |
| 23 | super(conf, population, archive); |
| 24 | if((conf instanceof MaxGenerationNumberConfig) && conf.validateConfiguration()){ |
| 25 | this.maximumNumberOfGenerations = ((MaxGenerationNumberConfig)(conf)).getMaximumNumberOfIterations(); |
| 26 | }else{ |
| 27 | throw new RuntimeException("MaxGenerationNumber.initialize: " + |
| 28 | "wrong or invalid configuration object"); |
| 29 | } |
| 30 | initializeOutputTree(); |
| 31 | } |
| 32 | |
| 33 | private void initializeOutputTree(){ |
| 34 | this.outputInformation.updateValue("Maximum Number of Generations"); |
| 35 | this.outputInformation.getChildren().clear(); |
| 36 | this.currentMaxGenNode = this.outputInformation.addChild("Current/Maximum: " + this.generationsSoFar + "/" + this.maximumNumberOfGenerations, NodeType.PARAMETER); |
| 37 | this.outputInformation.getChildren().add(this.suggestedStop); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * {@inheritDoc} |
| 42 | * Implements the Maximum Number of Generation Criterion. If the number of the evaluated iterations |
| 43 | * reaches the supplied limit, the criterion suggest that the optimization should be stopped. |
| 44 | */ |
| 45 | @Override |
| 46 | public void evaluateImpl(int iteration, long currentTime) { |
| 47 | generationsSoFar = iteration; |
| 48 | if(generationsSoFar >= maximumNumberOfGenerations){ |
| 49 | this.evaluationResult = true; |
| 50 | }else{ |
| 51 | this.evaluationResult = false; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * {@inheritDoc} |
| 57 | */ |
| 58 | @Override |
| 59 | public void updateOutputInformation(){ |
| 60 | this.currentMaxGenNode.updateValue("Current/Maximum Generation Number: " + this.generationsSoFar + "/" + this.maximumNumberOfGenerations); |
| 61 | } |
| 62 | } |