| 1 | using HeuristicLab.Common;
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| 2 | using HeuristicLab.Core;
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| 3 | using HeuristicLab.Operators;
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| 4 | using HeuristicLab.Optimization;
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| 5 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 6 |
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| 7 | namespace HeuristicLab.Algorithms.IslandALPS {
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| 8 |
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| 9 | /// <summary>
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| 10 | /// <pre>
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| 11 | /// __ scope __ __ scope __
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| 12 | /// / \ / \
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| 13 | /// Island1 Island2 => Island1 Island2
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| 14 | /// / \ / \ / \ / \
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| 15 | /// L1 L2 L1 L2 L1 L2 L1 L2
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| 16 | /// / \ / \ / \ / \ / \ / \ / \ / \
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| 17 | /// R S R S R S R S R S R S R S R S
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| 18 | /// /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ | /|\ |
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| 19 | /// ABC A DEF D GHI G JKL J ABC J DEF A GHI D JKL G
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| 20 | ///
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| 21 | /// </pre>
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| 22 | /// </summary>
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| 23 | [Item("LayerMigrator", "Migrates the selected scopes of each layer to the correspondant layer of the next island (clockwise).")]
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| 24 | [StorableClass]
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| 25 | public class LayerMigrator : SingleSuccessorOperator, IMigrator {
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| 26 |
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| 27 | [StorableConstructor]
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| 28 | public LayerMigrator(bool deserializing) : base(deserializing) {}
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| 29 | public LayerMigrator(LayerMigrator original, Cloner cloner) : base(original, cloner) {}
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| 30 | public LayerMigrator() {}
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| 31 |
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| 32 | public override IDeepCloneable Clone(Cloner cloner) {
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| 33 | return new LayerMigrator(this,cloner);
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| 34 | }
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| 35 |
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| 36 | public override IOperation Apply() {
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| 37 | var globalScope = ExecutionContext.Scope;
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| 38 | var openLayer = globalScope.SubScopes[0].SubScopes.Count;
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| 39 |
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| 40 | for (int layerIndex = 0; layerIndex < openLayer; layerIndex++) {
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| 41 | IScope emigrants = null;
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| 42 | for (int islandIndex = 0; islandIndex < globalScope.SubScopes.Count; islandIndex++) {
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| 43 | var currentLayer = globalScope.SubScopes[islandIndex].SubScopes[layerIndex];
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| 44 | if (emigrants != null) {
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| 45 | currentLayer.SubScopes.Add(emigrants);
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| 46 | }
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| 47 | emigrants = currentLayer.SubScopes[1];
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| 48 | currentLayer.SubScopes.Remove(emigrants);
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| 49 | }
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| 50 | //first island gets the individuals from the last island
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| 51 | globalScope.SubScopes[0].SubScopes[layerIndex].SubScopes.Add(emigrants);
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| 52 | }
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| 53 |
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| 54 | return base.Apply();
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| 55 | }
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| 56 | }
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| 57 | }
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