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source: branches/GP-Refactoring-713/sources/HeuristicLab.GP.StructureIdentification/3.3/FunctionLibraryInjector.cs @ 2215

Last change on this file since 2215 was 2212, checked in by gkronber, 15 years ago

GP Refactoring: #713

  • added project GP.Operators
  • moved operators from plugin GP to plugin GP.Operators
  • deleted unused constraints
  • removed dependency of GP plugins on Constraints plugin
  • moved StructID functions into directory Symbols
  • deleted unused class FunView
  • implemented add and remove functionality for the FunctionLibraryView
File size: 12.2 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.Collections.Generic;
23using HeuristicLab.Core;
24using HeuristicLab.Data;
25using HeuristicLab.GP.Interfaces;
26
27namespace HeuristicLab.GP.StructureIdentification {
28  public class FunctionLibraryInjector : OperatorBase {
29    private const string FUNCTIONLIBRARY = "FunctionLibrary";
30    private const string TARGETVARIABLE = "TargetVariable";
31    private const string MINTIMEOFFSET = "MinTimeOffset";
32    private const string MAXTIMEOFFSET = "MaxTimeOffset";
33
34    private const string DIFFERENTIALS_ALLOWED = "Differentials";
35    private const string VARIABLES_ALLOWED = "Variables";
36    private const string CONSTANTS_ALLOWED = "Constants";
37    private const string ADDITION_ALLOWED = "Addition";
38    private const string AVERAGE_ALLOWED = "Average";
39    private const string AND_ALLOWED = "And";
40    private const string COSINUS_ALLOWED = "Cosinus";
41    private const string DIVISION_ALLOWED = "Division";
42    private const string EQUAL_ALLOWED = "Equal";
43    private const string EXPONENTIAL_ALLOWED = "Exponential";
44    private const string GREATERTHAN_ALLOWED = "GreaterThan";
45    private const string IFTHENELSE_ALLOWED = "IfThenElse";
46    private const string LESSTHAN_ALLOWED = "LessThan";
47    private const string LOGARTIHM_ALLOWED = "Logarithm";
48    private const string MULTIPLICATION_ALLOWED = "Multiplication";
49    private const string NOT_ALLOWED = "Not";
50    private const string POWER_ALLOWED = "Power";
51    private const string OR_ALLOWED = "Or";
52    private const string SIGNUM_ALLOWED = "Signum";
53    private const string SINUS_ALLOWED = "Sinus";
54    private const string SQRT_ALLOWED = "SquareRoot";
55    private const string SUBTRACTION_ALLOWED = "Subtraction";
56    private const string TANGENS_ALLOWED = "Tangens";
57    private const string XOR_ALLOWED = "Xor";
58
59
60    public override string Description {
61      get { return @"Injects a configurable function library for regression and classification problems."; }
62    }
63
64    public FunctionLibraryInjector()
65      : base() {
66      AddVariableInfo(new VariableInfo(TARGETVARIABLE, "The target variable", typeof(IntData), VariableKind.In));
67      AddVariableInfo(new VariableInfo(MINTIMEOFFSET, "Minimal time offset for all features", typeof(IntData), VariableKind.In));
68      AddVariableInfo(new VariableInfo(MAXTIMEOFFSET, "Maximal time offset for all feature", typeof(IntData), VariableKind.In));
69      AddVariableInfo(new VariableInfo(FUNCTIONLIBRARY, "Preconfigured default function library", typeof(FunctionLibrary), VariableKind.New));
70
71      AddVariable(DIFFERENTIALS_ALLOWED, false);
72      AddVariable(VARIABLES_ALLOWED, true);
73      AddVariable(CONSTANTS_ALLOWED, true);
74      AddVariable(ADDITION_ALLOWED, true);
75      AddVariable(AVERAGE_ALLOWED, false);
76      AddVariable(AND_ALLOWED, true);
77      AddVariable(COSINUS_ALLOWED, true);
78      AddVariable(DIVISION_ALLOWED, true);
79      AddVariable(EQUAL_ALLOWED, true);
80      AddVariable(EXPONENTIAL_ALLOWED, true);
81      AddVariable(GREATERTHAN_ALLOWED, true);
82      AddVariable(IFTHENELSE_ALLOWED, true);
83      AddVariable(LESSTHAN_ALLOWED, true);
84      AddVariable(LOGARTIHM_ALLOWED, true);
85      AddVariable(MULTIPLICATION_ALLOWED, true);
86      AddVariable(NOT_ALLOWED, true);
87      AddVariable(POWER_ALLOWED, true);
88      AddVariable(OR_ALLOWED, true);
89      AddVariable(SIGNUM_ALLOWED, true);
90      AddVariable(SINUS_ALLOWED, true);
91      AddVariable(SQRT_ALLOWED, true);
92      AddVariable(SUBTRACTION_ALLOWED, true);
93      AddVariable(TANGENS_ALLOWED, true);
94      AddVariable(XOR_ALLOWED, false);
95    }
96
97    private void AddVariable(string name, bool allowed) {
98      AddVariableInfo(new VariableInfo(name, name + " allowed", typeof(BoolData), Core.VariableKind.New));
99      GetVariableInfo(name).Local = true;
100      AddVariable(new Core.Variable(name, new BoolData(allowed)));
101    }
102
103    public override IOperation Apply(IScope scope) {
104      FunctionLibrary functionLibrary = new FunctionLibrary();
105      int targetVariable = GetVariableValue<IntData>(TARGETVARIABLE, scope, true).Data;
106
107      // try to get minTimeOffset (use 0 as default if not available)
108      IItem minTimeOffsetItem = GetVariableValue(MINTIMEOFFSET, scope, true, false);
109      int minTimeOffset = minTimeOffsetItem == null ? 0 : ((IntData)minTimeOffsetItem).Data;
110      // try to get maxTimeOffset (use 0 as default if not available)
111      IItem maxTimeOffsetItem = GetVariableValue(MAXTIMEOFFSET, scope, true, false);
112      int maxTimeOffset = maxTimeOffsetItem == null ? 0 : ((IntData)maxTimeOffsetItem).Data;
113
114      Variable variable = new Variable();
115      Constant constant = new Constant();
116      Differential differential = new Differential();
117      Addition addition = new Addition();
118      And and = new And();
119      Average average = new Average();
120      Cosinus cosinus = new Cosinus();
121      Division division = new Division();
122      Equal equal = new Equal();
123      Exponential exponential = new Exponential();
124      GreaterThan greaterThan = new GreaterThan();
125      IfThenElse ifThenElse = new IfThenElse();
126      LessThan lessThan = new LessThan();
127      Logarithm logarithm = new Logarithm();
128      Multiplication multiplication = new Multiplication();
129      Not not = new Not();
130      Or or = new Or();
131      Power power = new Power();
132      Signum signum = new Signum();
133      Sinus sinus = new Sinus();
134      Sqrt sqrt = new Sqrt();
135      Subtraction subtraction = new Subtraction();
136      Tangens tangens = new Tangens();
137      Xor xor = new Xor();
138
139
140      List<IFunction> booleanFunctions = new List<IFunction>();
141      ConditionalAddFunction(AND_ALLOWED, and, booleanFunctions);
142      ConditionalAddFunction(EQUAL_ALLOWED, equal, booleanFunctions);
143      ConditionalAddFunction(GREATERTHAN_ALLOWED, greaterThan, booleanFunctions);
144      ConditionalAddFunction(LESSTHAN_ALLOWED, lessThan, booleanFunctions);
145      ConditionalAddFunction(NOT_ALLOWED, not, booleanFunctions);
146      ConditionalAddFunction(OR_ALLOWED, or, booleanFunctions);
147      ConditionalAddFunction(XOR_ALLOWED, xor, booleanFunctions);
148
149      List<IFunction> doubleFunctions = new List<IFunction>();
150      ConditionalAddFunction(DIFFERENTIALS_ALLOWED, differential, doubleFunctions);
151      ConditionalAddFunction(VARIABLES_ALLOWED, variable, doubleFunctions);
152      ConditionalAddFunction(CONSTANTS_ALLOWED, constant, doubleFunctions);
153      ConditionalAddFunction(ADDITION_ALLOWED, addition, doubleFunctions);
154      ConditionalAddFunction(AVERAGE_ALLOWED, average, doubleFunctions);
155      ConditionalAddFunction(COSINUS_ALLOWED, cosinus, doubleFunctions);
156      ConditionalAddFunction(DIVISION_ALLOWED, division, doubleFunctions);
157      ConditionalAddFunction(EXPONENTIAL_ALLOWED, exponential, doubleFunctions);
158      ConditionalAddFunction(IFTHENELSE_ALLOWED, ifThenElse, doubleFunctions);
159      ConditionalAddFunction(LOGARTIHM_ALLOWED, logarithm, doubleFunctions);
160      ConditionalAddFunction(MULTIPLICATION_ALLOWED, multiplication, doubleFunctions);
161      ConditionalAddFunction(POWER_ALLOWED, power, doubleFunctions);
162      ConditionalAddFunction(SIGNUM_ALLOWED, signum, doubleFunctions);
163      ConditionalAddFunction(SINUS_ALLOWED, sinus, doubleFunctions);
164      ConditionalAddFunction(SQRT_ALLOWED, sqrt, doubleFunctions);
165      ConditionalAddFunction(SUBTRACTION_ALLOWED, subtraction, doubleFunctions);
166      ConditionalAddFunction(TANGENS_ALLOWED, tangens, doubleFunctions);
167
168      SetAllowedSubOperators(and, booleanFunctions);
169      SetAllowedSubOperators(equal, doubleFunctions);
170      SetAllowedSubOperators(greaterThan, doubleFunctions);
171      SetAllowedSubOperators(lessThan, doubleFunctions);
172      SetAllowedSubOperators(not, booleanFunctions);
173      SetAllowedSubOperators(or, booleanFunctions);
174      SetAllowedSubOperators(xor, booleanFunctions);
175      SetAllowedSubOperators(addition, doubleFunctions);
176      SetAllowedSubOperators(average, doubleFunctions);
177      SetAllowedSubOperators(cosinus, doubleFunctions);
178      SetAllowedSubOperators(division, doubleFunctions);
179      SetAllowedSubOperators(exponential, doubleFunctions);
180      SetAllowedSubOperators(ifThenElse, 0, booleanFunctions);
181      SetAllowedSubOperators(ifThenElse, 1, doubleFunctions);
182      SetAllowedSubOperators(ifThenElse, 2, doubleFunctions);
183      SetAllowedSubOperators(logarithm, doubleFunctions);
184      SetAllowedSubOperators(multiplication, doubleFunctions);
185      SetAllowedSubOperators(power, doubleFunctions);
186      SetAllowedSubOperators(signum, doubleFunctions);
187      SetAllowedSubOperators(sinus, doubleFunctions);
188      SetAllowedSubOperators(sqrt, doubleFunctions);
189      SetAllowedSubOperators(subtraction, doubleFunctions);
190      SetAllowedSubOperators(tangens, doubleFunctions);
191
192      ConditionalAddOperator(DIFFERENTIALS_ALLOWED, functionLibrary, differential);
193      ConditionalAddOperator(VARIABLES_ALLOWED, functionLibrary, variable);
194      ConditionalAddOperator(CONSTANTS_ALLOWED, functionLibrary, constant);
195      ConditionalAddOperator(ADDITION_ALLOWED, functionLibrary, addition);
196      ConditionalAddOperator(AVERAGE_ALLOWED, functionLibrary, average);
197      ConditionalAddOperator(AND_ALLOWED, functionLibrary, and);
198      ConditionalAddOperator(COSINUS_ALLOWED, functionLibrary, cosinus);
199      ConditionalAddOperator(DIVISION_ALLOWED, functionLibrary, division);
200      ConditionalAddOperator(EQUAL_ALLOWED, functionLibrary, equal);
201      ConditionalAddOperator(EXPONENTIAL_ALLOWED, functionLibrary, exponential);
202      ConditionalAddOperator(GREATERTHAN_ALLOWED, functionLibrary, greaterThan);
203      ConditionalAddOperator(IFTHENELSE_ALLOWED, functionLibrary, ifThenElse);
204      ConditionalAddOperator(LESSTHAN_ALLOWED, functionLibrary, lessThan);
205      ConditionalAddOperator(LOGARTIHM_ALLOWED, functionLibrary, logarithm);
206      ConditionalAddOperator(MULTIPLICATION_ALLOWED, functionLibrary, multiplication);
207      ConditionalAddOperator(NOT_ALLOWED, functionLibrary, not);
208      ConditionalAddOperator(POWER_ALLOWED, functionLibrary, power);
209      ConditionalAddOperator(OR_ALLOWED, functionLibrary, or);
210      ConditionalAddOperator(SIGNUM_ALLOWED, functionLibrary, signum);
211      ConditionalAddOperator(SINUS_ALLOWED, functionLibrary, sinus);
212      ConditionalAddOperator(SQRT_ALLOWED, functionLibrary, sqrt);
213      ConditionalAddOperator(SUBTRACTION_ALLOWED, functionLibrary, subtraction);
214      ConditionalAddOperator(TANGENS_ALLOWED, functionLibrary, tangens);
215      ConditionalAddOperator(XOR_ALLOWED, functionLibrary, xor);
216
217      variable.SetConstraints(minTimeOffset, maxTimeOffset);
218      differential.SetConstraints(minTimeOffset, maxTimeOffset);
219
220      scope.AddVariable(new HeuristicLab.Core.Variable(scope.TranslateName(FUNCTIONLIBRARY), functionLibrary));
221
222      return null;
223    }
224
225    private void ConditionalAddFunction(string condName, IFunction fun, List<IFunction> list) {
226      if (GetVariableValue<BoolData>(condName, null, false).Data) list.Add(fun);
227    }
228
229    private void ConditionalAddOperator(string condName, FunctionLibrary functionLib, IFunction op) {
230      if (GetVariableValue<BoolData>(condName, null, false).Data) functionLib.AddFunction(op);
231    }
232
233    private void SetAllowedSubOperators(IFunction f, List<IFunction> gs) {
234      for (int i = 0; i < f.MaxSubTrees; i++) {
235        SetAllowedSubOperators(f, i, gs);
236      }
237    }
238
239    private void SetAllowedSubOperators(IFunction f, int i, List<IFunction> gs) {
240      gs.ForEach((g) => f.AddAllowedSubFunction(g, i));
241    }
242  }
243}
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