[12968] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2013 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 HeuristicLab.Common;
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| 23 | using HeuristicLab.Core;
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| 24 | using HeuristicLab.Data;
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| 25 | using HeuristicLab.Operators;
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| 26 | using HeuristicLab.Optimization;
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| 27 | using HeuristicLab.Parameters;
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| 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 | using System;
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| 30 | using System.Linq;
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| 31 |
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| 32 | namespace HeuristicLab.Algorithms.OffspringSelectionCMAEvolutionStrategy {
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| 33 | [Item("OffpsringSelectionCMATerminator", "Decides if the algorithm should terminate or not.")]
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| 34 | [StorableClass]
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| 35 | public class OffspringSelectionCMATerminator : HeuristicLab.Algorithms.CMAEvolutionStrategy.Terminator {
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| 36 |
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| 37 | public ILookupParameter<DoubleValue> SelectionPressureParameter {
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| 38 | get { return (ILookupParameter<DoubleValue>)Parameters["SelectionPressure"]; }
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| 39 | }
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| 40 |
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| 41 | public IValueLookupParameter<DoubleValue> MaximumSelectionPressureParameter {
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| 42 | get { return (IValueLookupParameter<DoubleValue>)Parameters["MaximumSelectionPressure"]; }
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| 43 | }
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| 44 |
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| 45 | [StorableConstructor]
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| 46 | protected OffspringSelectionCMATerminator(bool deserializing) : base(deserializing) { }
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| 47 | protected OffspringSelectionCMATerminator(OffspringSelectionCMATerminator original, Cloner cloner)
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| 48 | : base(original, cloner) { }
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| 49 | public OffspringSelectionCMATerminator() {
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| 50 | Parameters.Add(new LookupParameter<DoubleValue>("SelectionPressure", "The current selection pressure."));
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| 51 | Parameters.Add(new ValueLookupParameter<DoubleValue>("MaximumSelectionPressure", "The maximum selection pressure."));
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| 52 | }
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| 53 |
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| 54 | public override IDeepCloneable Clone(Cloner cloner) {
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| 55 | return new OffspringSelectionCMATerminator(this, cloner);
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| 56 | }
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| 57 |
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| 58 | public override IOperation Apply() {
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| 59 | var terminateOp = Terminate != null ? ExecutionContext.CreateOperation(Terminate) : null;
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| 60 |
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| 61 | var selPress = SelectionPressureParameter.ActualValue.Value;
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| 62 | var maxSelPress = MaximumSelectionPressureParameter.ActualValue.Value;
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| 63 | if (selPress >= maxSelPress) return terminateOp;
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| 64 |
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| 65 | return base.Apply();
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| 66 | }
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| 67 | }
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| 68 | }
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