[11484] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[17226] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[11484] | 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;
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[17366] | 23 | using System.Threading;
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[16751] | 24 | using HEAL.Attic;
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[11484] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Data;
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| 28 | using HeuristicLab.Operators;
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| 29 | using HeuristicLab.Parameters;
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| 30 |
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[11949] | 31 | namespace HeuristicLab.Optimization {
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[11484] | 32 | [Item("Single-objective MoveEvaluator", "Evaluates a parameter vector that results from a move.")]
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[16723] | 33 | [StorableType("EE4B1EBA-50BF-40C7-B338-F4A9D9CC554E")]
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[16753] | 34 | internal sealed class SingleObjectiveMoveEvaluator<TEncodedSolution> : SingleSuccessorOperator, ISingleObjectiveEvaluationOperator<TEncodedSolution>, ISingleObjectiveMoveEvaluator, IStochasticOperator, ISingleObjectiveMoveOperator
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[16751] | 35 | where TEncodedSolution : class, IEncodedSolution {
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[11484] | 36 |
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| 37 | public ILookupParameter<IRandom> RandomParameter {
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| 38 | get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
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| 39 | }
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| 40 |
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[16751] | 41 | public ILookupParameter<IEncoding<TEncodedSolution>> EncodingParameter {
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| 42 | get { return (ILookupParameter<IEncoding<TEncodedSolution>>)Parameters["Encoding"]; }
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[11484] | 43 | }
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| 44 |
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| 45 | public ILookupParameter<DoubleValue> QualityParameter {
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| 46 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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| 47 | }
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| 48 |
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| 49 | public ILookupParameter<DoubleValue> MoveQualityParameter {
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| 50 | get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
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| 51 | }
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| 52 |
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[17366] | 53 | public Action<ISingleObjectiveSolutionContext<TEncodedSolution>, IRandom, CancellationToken> Evaluate { get; set; }
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[11739] | 54 |
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[11484] | 55 | [StorableConstructor]
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[16753] | 56 | private SingleObjectiveMoveEvaluator(StorableConstructorFlag _) : base(_) { }
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| 57 | private SingleObjectiveMoveEvaluator(SingleObjectiveMoveEvaluator<TEncodedSolution> original, Cloner cloner) : base(original, cloner) { }
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[11484] | 58 | public SingleObjectiveMoveEvaluator() {
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| 59 | Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator to use."));
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[16751] | 60 | Parameters.Add(new LookupParameter<IEncoding<TEncodedSolution>>("Encoding", "An item that holds the problem's encoding."));
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[11484] | 61 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the parameter vector."));
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| 62 | Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the move."));
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| 63 | }
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| 64 |
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| 65 | public override IDeepCloneable Clone(Cloner cloner) {
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[16751] | 66 | return new SingleObjectiveMoveEvaluator<TEncodedSolution>(this, cloner);
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[11484] | 67 | }
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| 68 |
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[11739] | 69 | public override IOperation Apply() {
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[11484] | 70 | var random = RandomParameter.ActualValue;
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[11598] | 71 | var encoding = EncodingParameter.ActualValue;
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[17577] | 72 | var solutionContext = ScopeUtil.CreateSolutionContext(ExecutionContext.Scope, encoding);
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[17363] | 73 |
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[17577] | 74 | if (!solutionContext.IsEvaluated)
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| 75 | Evaluate(solutionContext, random, CancellationToken.None);
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[17363] | 76 | var qualityValue = solutionContext.EvaluationResult.Quality;
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| 77 |
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| 78 | MoveQualityParameter.ActualValue = new DoubleValue(qualityValue);
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[17577] | 79 | ScopeUtil.CopyToScope(ExecutionContext.Scope, solutionContext);
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[11739] | 80 | return base.Apply();
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[11484] | 81 | }
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| 82 | }
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| 83 | }
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