source: trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/Implementation/DataAnalysisProblemData.cs @ 5809

Last change on this file since 5809 was 5809, checked in by mkommend, 11 years ago

#1418: Reintegrated branch into trunk.

File size: 6.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2011 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 HeuristicLab.Collections;
26using HeuristicLab.Common;
27using HeuristicLab.Core;
28using HeuristicLab.Data;
29using HeuristicLab.Parameters;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31
32namespace HeuristicLab.Problems.DataAnalysis {
33  [StorableClass]
34  public abstract class DataAnalysisProblemData : ParameterizedNamedItem, IDataAnalysisProblemData {
35    private const string DatasetParameterName = "Dataset";
36    private const string InputVariablesParameterName = "InputVariables";
37    private const string TrainingPartitionParameterName = "TrainingPartition";
38    private const string TestPartitionParameterName = "TestPartition";
39
40    #region parameter properites
41    public IFixedValueParameter<Dataset> DatasetParameter {
42      get { return (IFixedValueParameter<Dataset>)Parameters[DatasetParameterName]; }
43    }
44    public IFixedValueParameter<ICheckedItemList<StringValue>> InputVariablesParameter {
45      get { return (IFixedValueParameter<ICheckedItemList<StringValue>>)Parameters[InputVariablesParameterName]; }
46    }
47    public IFixedValueParameter<IntRange> TrainingPartitionParameter {
48      get { return (IFixedValueParameter<IntRange>)Parameters[TrainingPartitionParameterName]; }
49    }
50    public IFixedValueParameter<IntRange> TestPartitionParameter {
51      get { return (IFixedValueParameter<IntRange>)Parameters[TestPartitionParameterName]; }
52    }
53    #endregion
54
55    #region propeties
56    public Dataset Dataset {
57      get { return DatasetParameter.Value; }
58    }
59    public ICheckedItemList<StringValue> InputVariables {
60      get { return InputVariablesParameter.Value; }
61    }
62    public IEnumerable<string> AllowedInputVariables {
63      get { return InputVariables.CheckedItems.Select(x => x.Value.Value); }
64    }
65
66    public IntRange TrainingPartition {
67      get { return TrainingPartitionParameter.Value; }
68    }
69    public IntRange TestPartition {
70      get { return TestPartitionParameter.Value; }
71    }
72
73    public IEnumerable<int> TrainingIndizes {
74      get {
75        return Enumerable.Range(TrainingPartition.Start, TrainingPartition.End - TrainingPartition.Start)
76                         .Where(i => i >= 0 && i < Dataset.Rows && (i < TestPartition.Start || TestPartition.End <= i));
77      }
78    }
79    public IEnumerable<int> TestIndizes {
80      get {
81        return Enumerable.Range(TestPartition.Start, TestPartition.End - TestPartition.Start)
82           .Where(i => i >= 0 && i < Dataset.Rows);
83      }
84    }
85    #endregion
86
87    protected DataAnalysisProblemData(DataAnalysisProblemData original, Cloner cloner) : base(original, cloner) { }
88    [StorableConstructor]
89    protected DataAnalysisProblemData(bool deserializing) : base(deserializing) { }
90
91    protected DataAnalysisProblemData(Dataset dataset, IEnumerable<string> allowedInputVariables) {
92      if (dataset == null) throw new ArgumentNullException("The dataset must not be null.");
93      if (allowedInputVariables == null) throw new ArgumentNullException("The allowedInputVariables must not be null.");
94
95      if (allowedInputVariables.Except(dataset.VariableNames).Any())
96        throw new ArgumentException("All allowed input variables must be present in the dataset.");
97
98      var inputVariables = new CheckedItemList<StringValue>(dataset.VariableNames.Select(x => new StringValue(x)));
99      foreach (StringValue x in inputVariables)
100        inputVariables.SetItemCheckedState(x, allowedInputVariables.Contains(x.Value));
101
102      int trainingPartitionStart = 0;
103      int trainingPartitionEnd = dataset.Rows / 2;
104      int testPartitionStart = dataset.Rows / 2;
105      int testPartitionEnd = dataset.Rows;
106
107      Parameters.Add(new FixedValueParameter<Dataset>(DatasetParameterName, "", dataset));
108      Parameters.Add(new FixedValueParameter<ICheckedItemList<StringValue>>(InputVariablesParameterName, "", inputVariables.AsReadOnly()));
109      Parameters.Add(new FixedValueParameter<IntRange>(TrainingPartitionParameterName, "", new IntRange(trainingPartitionStart, trainingPartitionEnd)));
110      Parameters.Add(new FixedValueParameter<IntRange>(TestPartitionParameterName, "", new IntRange(testPartitionStart, testPartitionEnd)));
111
112      ((ValueParameter<Dataset>)DatasetParameter).ReactOnValueToStringChangedAndValueItemImageChanged = false;
113      RegisterEventHandlers();
114    }
115
116    private void RegisterEventHandlers() {
117      DatasetParameter.ValueChanged += new EventHandler(Parameter_ValueChanged);
118      InputVariables.CheckedItemsChanged += new CollectionItemsChangedEventHandler<IndexedItem<StringValue>>(InputVariables_CheckedItemsChanged);
119      TrainingPartition.ValueChanged += new EventHandler(Parameter_ValueChanged);
120      TestPartition.ValueChanged += new EventHandler(Parameter_ValueChanged);
121    }
122
123    private void InputVariables_CheckedItemsChanged(object sender, CollectionItemsChangedEventArgs<IndexedItem<StringValue>> e) {
124      OnChanged();
125    }
126
127    private void Parameter_ValueChanged(object sender, EventArgs e) {
128      OnChanged();
129    }
130
131    public event EventHandler Changed;
132    protected virtual void OnChanged() {
133      var listeners = Changed;
134      if (listeners != null) listeners(this, EventArgs.Empty);
135    }
136  }
137}
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