source: branches/SimSharp/HeuristicLab.Problems.Programmable/3.3/Operators/SingleObjectiveEvaluator.cs @ 10754

Last change on this file since 10754 was 10754, checked in by abeham, 6 years ago

#2174: minor refactorings

File size: 3.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2014 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 HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Encodings.ParameterVectorEncoding;
27using HeuristicLab.Operators;
28using HeuristicLab.Optimization;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31
32namespace HeuristicLab.Problems.Programmable {
33  [Item("Single-objective Evaluator", "Calls the script's Evaluate method to get the quality value of the parameter vector.")]
34  [StorableClass]
35  public class SingleObjectiveEvaluator : SingleSuccessorOperator, ISingleObjectiveProgrammableProblemEvaluator, IStochasticOperator {
36
37    public ILookupParameter<IRandom> RandomParameter {
38      get { return (ILookupParameter<IRandom>)Parameters["Random"]; }
39    }
40
41    public ILookupParameter<SingleObjectiveScript> ScriptParameter {
42      get { return (ILookupParameter<SingleObjectiveScript>)Parameters["Script"]; }
43    }
44
45    public ILookupParameter<ParameterVector> ParameterVectorParameter {
46      get { return (ILookupParameter<ParameterVector>)Parameters["ParameterVector"]; }
47    }
48
49    public ILookupParameter<DoubleValue> QualityParameter {
50      get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
51    }
52
53    [StorableConstructor]
54    protected SingleObjectiveEvaluator(bool deserializing) : base(deserializing) { }
55    protected SingleObjectiveEvaluator(SingleObjectiveEvaluator original, Cloner cloner) : base(original, cloner) { }
56    public SingleObjectiveEvaluator() {
57      Parameters.Add(new LookupParameter<IRandom>("Random", "The random number generator to use."));
58      Parameters.Add(new LookupParameter<SingleObjectiveScript>("Script", "The script that will execute the evaluation function and define the parameter vector."));
59      Parameters.Add(new LookupParameter<ParameterVector>("ParameterVector", "The vector that holds the parameters."));
60      Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality of the parameter vector."));
61    }
62
63    public override IDeepCloneable Clone(Cloner cloner) {
64      return new SingleObjectiveEvaluator(this, cloner);
65    }
66
67    public override IOperation Apply() {
68      var random = RandomParameter.ActualValue;
69      var runner = ScriptParameter.ActualValue;
70      if (runner.Instance == null) throw new InvalidOperationException("Script instance is null, maybe the code doesn't compile.");
71      var vector = ParameterVectorParameter.ActualValue;
72      QualityParameter.ActualValue = new DoubleValue(runner.Instance.Evaluate(random, vector));
73      return base.Apply();
74    }
75  }
76}
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