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source: branches/Sliding Window GP/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/SlidingWindow/GenerationalSlidingWindowAnalyzer.cs @ 7845

Last change on this file since 7845 was 7845, checked in by mkommend, 12 years ago

#1837: added prototype for sliding window GP

File size: 3.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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 HeuristicLab.Common;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.Optimization;
26using HeuristicLab.Parameters;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28
29namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
30  [Item("Generational Sliding Window GP Analyzer", "Analyzer which moves a sliding window every n-th generation over the training partition.")]
31  [StorableClass]
32  public class GenerationalSlidingWindowAnalyzer<T> : SlidingWindowAnalyzer<T>, IIterationBasedOperator
33    where T : class, IDataAnalysisProblemData {
34    private const string GenerationsIntervalParameterName = "Generation Interval";
35    private const string GenerationsIntervalStartParameterName = "Generation Interval Start";
36    private const string IterationsParameterName = "Iterations";
37    private const string MaximumIterationsParameterName = "Maximum Iterations";
38
39    #region parameter properties
40    public ILookupParameter<IntValue> IterationsParameter {
41      get { return (ILookupParameter<IntValue>)Parameters[IterationsParameterName]; }
42    }
43    public IValueLookupParameter<IntValue> MaximumIterationsParameter {
44      get { return (IValueLookupParameter<IntValue>)Parameters[MaximumIterationsParameterName]; }
45    }
46    public IFixedValueParameter<IntValue> GenerationsIntervalParameter {
47      get { return (IFixedValueParameter<IntValue>)Parameters[GenerationsIntervalParameterName]; }
48    }
49    public IFixedValueParameter<IntValue> GenerationsIntervalStartParameter {
50      get { return (IFixedValueParameter<IntValue>)Parameters[GenerationsIntervalStartParameterName]; }
51    }
52    #endregion
53
54    #region properties
55    public IntValue GenerationsInterval {
56      get { return GenerationsIntervalParameter.Value; }
57    }
58    public IntValue GenerationsIntervalStart {
59      get { return GenerationsIntervalStartParameter.Value; }
60    }
61    #endregion
62
63
64    [StorableConstructor]
65    protected GenerationalSlidingWindowAnalyzer(bool deserializing) : base(deserializing) { }
66    protected GenerationalSlidingWindowAnalyzer(GenerationalSlidingWindowAnalyzer<T> original, Cloner cloner) : base(original, cloner) { }
67    public override IDeepCloneable Clone(Cloner cloner) {
68      return new GenerationalSlidingWindowAnalyzer<T>(this, cloner);
69    }
70
71    public GenerationalSlidingWindowAnalyzer() {
72      Parameters.Add(new LookupParameter<IntValue>(IterationsParameterName, ""));
73      Parameters.Add(new ValueLookupParameter<IntValue>(MaximumIterationsParameterName, ""));
74      Parameters.Add(new FixedValueParameter<IntValue>(GenerationsIntervalParameterName, "", new IntValue(0)));
75      Parameters.Add(new FixedValueParameter<IntValue>(GenerationsIntervalStartParameterName, "", new IntValue(10)));
76    }
77
78    protected override bool CheckForUpdate() {
79      var iteration = IterationsParameter.ActualValue.Value;
80      var start = GenerationsIntervalStart.Value;
81      var step = GenerationsInterval.Value;
82      if (iteration < start) return false;
83
84      if ((iteration - start) % step == 0) return true;
85
86      return false;
87    }
88
89  }
90}
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