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source: trunk/sources/HeuristicLab.Problems.DataAnalysis/3.3/DataAnalysisProblemData.cs @ 3442

Last change on this file since 3442 was 3442, checked in by gkronber, 14 years ago

Implemented views for DataAnalysisProblems and DataAnalysisSolutions. #938 (Data types and operators for regression problems)
File size: 13.4 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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.Common;
26using HeuristicLab.Core;
27using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
28using HeuristicLab.Parameters;
29using HeuristicLab.Data;
30using HeuristicLab.Problems.DataAnalysis;
31using System.Drawing;
32using System.IO;
33
34namespace HeuristicLab.Problems.DataAnalysis {
35  [Item("DataAnalysisProblemData", "Represents an item containing all data defining a data analysis problem.")]
36  [StorableClass]
37  public class DataAnalysisProblemData : NamedItem {
38    [Storable]
39    private VariableCollection variables;
40    public VariableCollection Variables {
41      get { return variables; }
42    }
43
44    #region variable properties
45    public IVariable DatasetVariable {
46      get { return variables["Dataset"]; }
47    }
48
49    public IVariable TargetVariableVariable {
50      get { return variables["TargetVariable"]; }
51    }
52
53    public IVariable InputVariablesVariable {
54      get { return variables["InputVariables"]; }
55    }
56
57    public IVariable TrainingSamplesStartVariable {
58      get { return variables["TrainingSamplesStart"]; }
59    }
60    public IVariable TrainingSamplesEndVariable {
61      get { return variables["TrainingSamplesEnd"]; }
62    }
63
64    public IVariable TestSamplesStartVariable {
65      get { return variables["TestSamplesStart"]; }
66    }
67    public IVariable TestSamplesEndVariable {
68      get { return variables["TestSamplesEnd"]; }
69    }
70    #endregion
71
72    #region properties
73    public Dataset Dataset {
74      get { return (Dataset)DatasetVariable.Value; }
75      set {
76        if (value != Dataset) {
77          if (value == null) throw new ArgumentNullException();
78          if (Dataset != null) DeregisterDatasetEventHandlers();
79          DatasetVariable.Value = value;
80          RegisterDatasetEventHandlers();
81          OnProblemDataChanged(EventArgs.Empty);
82        }
83      }
84    }
85    public StringValue TargetVariable {
86      get { return (StringValue)TargetVariableVariable.Value; }
87      set {
88        if (value != TargetVariableVariable) {
89          if (value == null) throw new ArgumentNullException();
90          if (TargetVariable != null) DeregisterStringValueEventHandlers(TargetVariable);
91          TargetVariableVariable.Value = value;
92          RegisterStringValueEventHandlers(TargetVariable);
93          OnProblemDataChanged(EventArgs.Empty);
94        }
95      }
96    }
97    public ItemList<StringValue> InputVariables {
98      get { return (ItemList<StringValue>)InputVariablesVariable.Value; }
99      set {
100        if (value != InputVariables) {
101          if (value == null) throw new ArgumentNullException();
102          if (InputVariables != null) DeregisterInputVariablesEventHandlers();
103          InputVariablesVariable.Value = value;
104          RegisterInputVariablesEventHandlers();
105          OnProblemDataChanged(EventArgs.Empty);
106        }
107      }
108    }
109    public IntValue TrainingSamplesStart {
110      get { return (IntValue)TrainingSamplesStartVariable.Value; }
111      set {
112        if (value != TrainingSamplesStart) {
113          if (value == null) throw new ArgumentNullException();
114          if (TrainingSamplesStart != null) DeregisterValueTypeEventHandlers(TrainingSamplesStart);
115          TrainingSamplesStartVariable.Value = value;
116          RegisterValueTypeEventHandlers(TrainingSamplesStart);
117          OnProblemDataChanged(EventArgs.Empty);
118        }
119      }
120    }
121    public IntValue TrainingSamplesEnd {
122      get { return (IntValue)TrainingSamplesEndVariable.Value; }
123      set {
124        if (value != TrainingSamplesEnd) {
125          if (value == null) throw new ArgumentNullException();
126          if (TrainingSamplesEnd != null) DeregisterValueTypeEventHandlers(TrainingSamplesEnd);
127          TrainingSamplesEndVariable.Value = value;
128          RegisterValueTypeEventHandlers(TrainingSamplesEnd);
129          OnProblemDataChanged(EventArgs.Empty);
130        }
131      }
132    }
133    public IntValue TestSamplesStart {
134      get { return (IntValue)TestSamplesStartVariable.Value; }
135      set {
136        if (value != TestSamplesStart) {
137          if (value == null) throw new ArgumentNullException();
138          if (TestSamplesStart != null) DeregisterValueTypeEventHandlers(TestSamplesStart);
139          TestSamplesStartVariable.Value = value;
140          RegisterValueTypeEventHandlers(TestSamplesStart);
141          OnProblemDataChanged(EventArgs.Empty);
142        }
143      }
144    }
145    public IntValue TestSamplesEnd {
146      get { return (IntValue)TestSamplesEndVariable.Value; }
147      set {
148        if (value != TestSamplesEnd) {
149          if (value == null) throw new ArgumentNullException();
150          if (TestSamplesEnd != null) DeregisterValueTypeEventHandlers(TestSamplesEnd);
151          TestSamplesEndVariable.Value = value;
152          RegisterValueTypeEventHandlers(TestSamplesEnd);
153          OnProblemDataChanged(EventArgs.Empty);
154        }
155      }
156    }
157    #endregion
158
159    public DataAnalysisProblemData()
160      : base() {
161      variables = new VariableCollection();
162      variables.Add(new Variable("Dataset", new Dataset()));
163      variables.Add(new Variable("InputVariables", new ItemList<StringValue>()));
164      variables.Add(new Variable("TargetVariable", new StringValue()));
165      variables.Add(new Variable("TrainingSamplesStart", new IntValue()));
166      variables.Add(new Variable("TrainingSamplesEnd", new IntValue()));
167      variables.Add(new Variable("TestSamplesStart", new IntValue()));
168      variables.Add(new Variable("TestSamplesEnd", new IntValue()));
169      RegisterEventHandlers();
170    }
171
172    [StorableConstructor]
173    private DataAnalysisProblemData(bool deserializing) : base() { }
174
175    [StorableHook(HookType.AfterDeserialization)]
176    private void AfterDeserializationHook() {
177      RegisterEventHandlers();
178    }
179
180    #region events
181    private void RegisterEventHandlers() {
182      RegisterDatasetEventHandlers();
183      RegisterInputVariablesEventHandlers();
184      RegisterStringValueEventHandlers(TargetVariable);
185      RegisterValueTypeEventHandlers(TrainingSamplesStart);
186      RegisterValueTypeEventHandlers(TrainingSamplesEnd);
187      RegisterValueTypeEventHandlers(TestSamplesStart);
188      RegisterValueTypeEventHandlers(TestSamplesEnd);
189    }
190
191    public event EventHandler ProblemDataChanged;
192    protected virtual void OnProblemDataChanged(EventArgs e) {
193      var listeners = ProblemDataChanged;
194      if (listeners != null) listeners(this, e);
195    }
196
197
198    private void RegisterValueTypeEventHandlers<T>(ValueTypeValue<T> value) where T : struct {
199      value.ValueChanged += new EventHandler(value_ValueChanged);
200    }
201
202    private void DeregisterValueTypeEventHandlers<T>(ValueTypeValue<T> value) where T : struct {
203      value.ValueChanged -= new EventHandler(value_ValueChanged);
204    }
205
206    void value_ValueChanged(object sender, EventArgs e) {
207      OnProblemDataChanged(e);
208    }
209
210    private void RegisterStringValueEventHandlers(StringValue value) {
211      value.ValueChanged += new EventHandler(value_ValueChanged);
212    }
213
214    private void DeregisterStringValueEventHandlers(StringValue value) {
215      value.ValueChanged -= new EventHandler(value_ValueChanged);
216    }
217
218    private void RegisterDatasetEventHandlers() {
219      Dataset.DataChanged += new EventHandler<EventArgs<int, int>>(Dataset_DataChanged);
220      Dataset.Reset += new EventHandler(Dataset_Reset);
221      Dataset.ColumnNamesChanged += new EventHandler(Dataset_ColumnNamesChanged);
222    }
223
224    private void DeregisterDatasetEventHandlers() {
225      Dataset.DataChanged -= new EventHandler<EventArgs<int, int>>(Dataset_DataChanged);
226      Dataset.Reset -= new EventHandler(Dataset_Reset);
227      Dataset.ColumnNamesChanged -= new EventHandler(Dataset_ColumnNamesChanged);
228    }
229
230    void Dataset_ColumnNamesChanged(object sender, EventArgs e) {
231      OnProblemDataChanged(e);
232    }
233
234    void Dataset_Reset(object sender, EventArgs e) {
235      OnProblemDataChanged(e);
236    }
237
238    void Dataset_DataChanged(object sender, EventArgs<int, int> e) {
239      OnProblemDataChanged(e);
240    }
241
242    private void RegisterInputVariablesEventHandlers() {
243      InputVariables.CollectionReset += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_CollectionReset);
244      InputVariables.ItemsAdded += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsAdded);
245      InputVariables.ItemsRemoved += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsRemoved);
246      InputVariables.ItemsReplaced += new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsReplaced);
247      foreach (var item in InputVariables)
248        item.ValueChanged += new EventHandler(InputVariables_Value_ValueChanged);
249    }
250
251    private void DeregisterInputVariablesEventHandlers() {
252      InputVariables.CollectionReset -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_CollectionReset);
253      InputVariables.ItemsAdded -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsAdded);
254      InputVariables.ItemsRemoved -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsRemoved);
255      InputVariables.ItemsReplaced -= new HeuristicLab.Collections.CollectionItemsChangedEventHandler<HeuristicLab.Collections.IndexedItem<StringValue>>(InputVariables_ItemsReplaced);
256      foreach (var item in InputVariables) {
257        item.ValueChanged -= new EventHandler(InputVariables_Value_ValueChanged);
258      }
259    }
260
261    void InputVariables_ItemsReplaced(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<HeuristicLab.Collections.IndexedItem<StringValue>> e) {
262      foreach (var indexedItem in e.OldItems)
263        indexedItem.Value.ValueChanged -= new EventHandler(InputVariables_Value_ValueChanged);
264      foreach (var indexedItem in e.Items)
265        indexedItem.Value.ValueChanged += new EventHandler(InputVariables_Value_ValueChanged);
266      OnProblemDataChanged(e);
267    }
268
269    void InputVariables_ItemsRemoved(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<HeuristicLab.Collections.IndexedItem<StringValue>> e) {
270      foreach (var indexedItem in e.Items)
271        indexedItem.Value.ValueChanged -= new EventHandler(InputVariables_Value_ValueChanged);
272      OnProblemDataChanged(e);
273    }
274
275    void InputVariables_ItemsAdded(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<HeuristicLab.Collections.IndexedItem<StringValue>> e) {
276      foreach (var indexedItem in e.Items)
277        indexedItem.Value.ValueChanged += new EventHandler(InputVariables_Value_ValueChanged);
278      OnProblemDataChanged(e);
279    }
280
281    void InputVariables_CollectionReset(object sender, HeuristicLab.Collections.CollectionItemsChangedEventArgs<HeuristicLab.Collections.IndexedItem<StringValue>> e) {
282      foreach (var indexedItem in e.OldItems)
283        indexedItem.Value.ValueChanged -= new EventHandler(InputVariables_Value_ValueChanged);
284
285      OnProblemDataChanged(e);
286    }
287    void InputVariables_Value_ValueChanged(object sender, EventArgs e) {
288      OnProblemDataChanged(e);
289    }
290
291    #endregion
292
293    public virtual void ImportFromFile(string fileName) {
294      var csvFileParser = new CsvFileParser();
295      csvFileParser.Parse(fileName);
296      Name = "Data imported from " + Path.GetFileName(fileName);
297      Dataset = new Dataset(csvFileParser.VariableNames, csvFileParser.Values);
298      Dataset.Name = Path.GetFileName(fileName);
299      TargetVariable = new StringValue(Dataset.VariableNames.First());
300      InputVariables = new ItemList<StringValue>(Dataset.VariableNames.Skip(1).Select(s => new StringValue(s)));
301      int middle = (int)(csvFileParser.Rows * 0.5);
302      TrainingSamplesStart = new IntValue(0);
303      TrainingSamplesEnd = new IntValue(middle);
304      TestSamplesStart = new IntValue(middle);
305      TestSamplesEnd = new IntValue(csvFileParser.Rows);
306    }
307
308    public override IDeepCloneable Clone(Cloner cloner) {
309      DataAnalysisProblemData clone = (DataAnalysisProblemData)base.Clone(cloner);
310      clone.variables = (VariableCollection)variables.Clone(cloner);
311
312      clone.RegisterEventHandlers();
313      return clone;
314    }
315  }
316}
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