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source: trunk/sources/HeuristicLab.GP.StructureIdentification/Evaluators/SimpleEvaluator.cs @ 1109

Last change on this file since 1109 was 712, checked in by gkronber, 16 years ago

fixed a stupid mistake introduced with r702 #328 (GP evaluation doesn't work in a thread parallel engine).

File size: 2.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2008 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 System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using HeuristicLab.Core;
27using HeuristicLab.Data;
28using HeuristicLab.Operators;
29using HeuristicLab.DataAnalysis;
30
31namespace HeuristicLab.GP.StructureIdentification {
32  public class SimpleEvaluator : GPEvaluatorBase {
33    public SimpleEvaluator()
34      : base() {
35      AddVariableInfo(new VariableInfo("Values", "The values of the target variable as predicted by the model and the original value of the target variable", typeof(ItemList), VariableKind.New | VariableKind.Out));
36    }
37
38    public override void Evaluate(IScope scope, BakedTreeEvaluator evaluator, Dataset dataset, int targetVariable, int start, int end, bool updateTargetValues) {
39      ItemList values = GetVariableValue<ItemList>("Values", scope, false, false);
40      if (values == null) {
41        values = new ItemList();
42        IVariableInfo info = GetVariableInfo("Values");
43        if (info.Local)
44          AddVariable(new HeuristicLab.Core.Variable(info.ActualName, values));
45        else
46          scope.AddVariable(new HeuristicLab.Core.Variable(scope.TranslateName(info.FormalName), values));
47      }
48      values.Clear();
49
50      for (int sample = start; sample < end; sample++) {
51        ItemList row = new ItemList();
52        double estimated = evaluator.Evaluate(sample);
53        double original = dataset.GetValue(sample, targetVariable);
54        if (updateTargetValues) {
55          dataset.SetValue(sample, targetVariable, estimated);
56        }
57        row.Add(new DoubleData(estimated));
58        row.Add(new DoubleData(original));
59        values.Add(row);
60      }
61    }
62  }
63}
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