[10827] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System.Linq;
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[11694] | 23 | using HeuristicLab.Common;
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[10347] | 24 | using HeuristicLab.Core;
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| 25 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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| 26 | using HeuristicLab.EvolutionTracking;
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[11694] | 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[10347] | 28 |
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| 29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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| 30 | public class SymbolicDataAnalysisExpressionBeforeManipulatorOperator : BeforeManipulatorOperator<ISymbolicExpressionTree> {
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[11694] | 31 | public SymbolicDataAnalysisExpressionBeforeManipulatorOperator() { }
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| 32 |
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| 33 | protected SymbolicDataAnalysisExpressionBeforeManipulatorOperator(SymbolicDataAnalysisExpressionBeforeManipulatorOperator original, Cloner cloner)
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| 34 | : base(original, cloner) {
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| 35 | }
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| 36 |
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| 37 | public override IDeepCloneable Clone(Cloner cloner) {
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| 38 | return new SymbolicDataAnalysisExpressionBeforeManipulatorOperator(this, cloner);
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| 39 | }
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| 40 |
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| 41 | [StorableConstructor]
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| 42 | protected SymbolicDataAnalysisExpressionBeforeManipulatorOperator(bool deserializing) : base(deserializing) { }
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| 43 |
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[10347] | 44 | public override IOperation Apply() {
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[11387] | 45 | // the call below does the following things:
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| 46 | // 1) creates a clone of the individual to be manipulated, and adds it in the genealogy graph with rank = currentRank - 0.5.
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| 47 | // the cloning will also clone the vertex data object, therefore reference comparison of node lists will not work
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| 48 | // 2) replaces the parent of the current individual with the clone, and alters graph connections accordingly
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[11855] | 49 | // so that vChild vertex will represent the child, and vClone will represent the cloned parent
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[11387] | 50 | var result = base.Apply();
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| 51 | var vChild = GenealogyGraph.GetByContent(ChildParameter.ActualValue);
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[10888] | 52 | var vClone = vChild.Parents.Last();
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[10347] | 53 |
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[10833] | 54 | var fragment = (IFragment<ISymbolicExpressionTreeNode>)vClone.InArcs.Last().Data;
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| 55 | if (fragment != null) {
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| 56 | // this step must be performed because the fragment root actually references the original child (not the clone).
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[11387] | 57 | // when mutation occurs the fragment root would point to the mutated subtree in the child instead of the original one in the clone
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[11253] | 58 | fragment.Root = vClone.Data.IterateNodesPrefix().ElementAt(fragment.Index1);
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[10833] | 59 | }
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| 60 |
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[10347] | 61 | return result;
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| 62 | }
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| 63 | }
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| 64 | }
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