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source: branches/2521_ProblemRefactoring/HeuristicLab.Optimization/3.3/BasicProblems/Operators/SingleObjectiveEvaluator.cs @ 16753

Last change on this file since 16753 was 16753, checked in by mkommend, 5 years ago

#2521: Made basic problem specific operators internal and sealed.

File size: 3.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using HEAL.Attic;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Operators;
28using HeuristicLab.Parameters;
29
30namespace HeuristicLab.Optimization {
31  [Item("Single-objective Evaluator", "Calls the script's Evaluate method to get the quality value of the parameter vector.")]
32  [StorableType("E8914B68-D0D7-407F-8D58-002FDF2F45CF")]
33  public sealed class SingleObjectiveEvaluator<TEncodedSolution> : InstrumentedOperator, ISingleObjectiveEvaluationOperator<TEncodedSolution>, IStochasticOperator
34  where TEncodedSolution : class, IEncodedSolution {
35
36    public ILookupParameter<IRandom> RandomParameter {
37      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
38    }
39
40    public ILookupParameter<IEncoding<TEncodedSolution>> EncodingParameter {
41      get { return (ILookupParameter<IEncoding<TEncodedSolution>>)Parameters["Encoding"]; }
42    }
43
44    public ILookupParameter<DoubleValue> QualityParameter {
45      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
46    }
47
48    public Func<TEncodedSolution, IRandom, double> EvaluateFunc { get; set; }
49
50    [StorableConstructor]
51    private SingleObjectiveEvaluator(StorableConstructorFlag _) : base(_) { }
52    private SingleObjectiveEvaluator(SingleObjectiveEvaluator<TEncodedSolution> original, Cloner cloner) : base(original, cloner) { }
53    public SingleObjectiveEvaluator() {
54      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator to use."));
55      Parameters.Add(new LookupParameter<IEncoding<TEncodedSolution>>("Encoding", "An item that holds the problem's encoding."));
56      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the parameter vector."));
57    }
58
59    public override IDeepCloneable Clone(Cloner cloner) { return new SingleObjectiveEvaluator<TEncodedSolution>(this, cloner); }
60
61    public override IOperation InstrumentedApply() {
62      var random = RandomParameter.ActualValue;
63      var encoding = EncodingParameter.ActualValue;
64      var solution = ScopeUtil.GetEncodedSolution(ExecutionContext.Scope, encoding);
65      QualityParameter.ActualValue = new DoubleValue(EvaluateFunc(solution, random));
66      return base.InstrumentedApply();
67    }
68  }
69}
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