| 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Text;
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| 25 | using System.Xml;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Data;
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| 28 | using HeuristicLab.DataAnalysis;
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| 29 | using HeuristicLab.Constraints;
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| 30 | using StructId = HeuristicLab.GP.StructureIdentification;
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| 31 |
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| 32 | namespace HeuristicLab.GP.StructureIdentification {
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| 33 | public class FunctionLibraryInjector : OperatorBase {
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| 34 | private const string FUNCTIONLIBRARY = "FunctionLibrary";
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| 35 | private const string TARGETVARIABLE = "TargetVariable";
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| 36 | private const string MINTIMEOFFSET = "MinTimeOffset";
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| 37 | private const string MAXTIMEOFFSET = "MaxTimeOffset";
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| 38 |
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| 39 | private const string DIFFERENTIALS_ALLOWED = "Differentials";
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| 40 | private const string VARIABLES_ALLOWED = "Variables";
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| 41 | private const string CONSTANTS_ALLOWED = "Constants";
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| 42 | private const string ADDITION_ALLOWED = "Addition";
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| 43 | private const string AVERAGE_ALLOWED = "Average";
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| 44 | private const string AND_ALLOWED = "And";
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| 45 | private const string COSINUS_ALLOWED = "Cosinus";
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| 46 | private const string DIVISION_ALLOWED = "Division";
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| 47 | private const string EQUAL_ALLOWED = "Equal";
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| 48 | private const string EXPONENTIAL_ALLOWED = "Exponential";
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| 49 | private const string GREATERTHAN_ALLOWED = "GreaterThan";
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| 50 | private const string IFTHENELSE_ALLOWED = "IfThenElse";
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| 51 | private const string LESSTHAN_ALLOWED = "LessThan";
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| 52 | private const string LOGARTIHM_ALLOWED = "Logarithm";
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| 53 | private const string MULTIPLICATION_ALLOWED = "Multiplication";
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| 54 | private const string NOT_ALLOWED = "Not";
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| 55 | private const string POWER_ALLOWED = "Power";
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| 56 | private const string OR_ALLOWED = "Or";
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| 57 | private const string SIGNUM_ALLOWED = "Signum";
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| 58 | private const string SINUS_ALLOWED = "Sinus";
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| 59 | private const string SQRT_ALLOWED = "SquareRoot";
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| 60 | private const string SUBTRACTION_ALLOWED = "Subtraction";
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| 61 | private const string TANGENS_ALLOWED = "Tangens";
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| 62 | private const string XOR_ALLOWED = "Xor";
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| 63 |
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| 64 |
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| 65 | public override string Description {
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| 66 | get { return @"Injects a configurable function library for regression and classification problems."; }
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| 67 | }
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| 68 |
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| 69 | public FunctionLibraryInjector()
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| 70 | : base() {
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| 71 | AddVariableInfo(new VariableInfo(TARGETVARIABLE, "The target variable", typeof(IntData), VariableKind.In));
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| 72 | AddVariableInfo(new VariableInfo(MINTIMEOFFSET, "Minimal time offset for all features", typeof(IntData), VariableKind.In));
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| 73 | AddVariableInfo(new VariableInfo(MAXTIMEOFFSET, "Maximal time offset for all feature", typeof(IntData), VariableKind.In));
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| 74 | AddVariableInfo(new VariableInfo(FUNCTIONLIBRARY, "Preconfigured default operator library", typeof(GPOperatorLibrary), VariableKind.New));
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| 75 |
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| 76 | AddVariable(DIFFERENTIALS_ALLOWED, false);
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| 77 | AddVariable(VARIABLES_ALLOWED, true);
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| 78 | AddVariable(CONSTANTS_ALLOWED, true);
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| 79 | AddVariable(ADDITION_ALLOWED, true);
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| 80 | AddVariable(AVERAGE_ALLOWED, false);
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| 81 | AddVariable(AND_ALLOWED, true);
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| 82 | AddVariable(COSINUS_ALLOWED, true);
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| 83 | AddVariable(DIVISION_ALLOWED, true);
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| 84 | AddVariable(EQUAL_ALLOWED, true);
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| 85 | AddVariable(EXPONENTIAL_ALLOWED, true);
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| 86 | AddVariable(GREATERTHAN_ALLOWED, true);
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| 87 | AddVariable(IFTHENELSE_ALLOWED, true);
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| 88 | AddVariable(LESSTHAN_ALLOWED, true);
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| 89 | AddVariable(LOGARTIHM_ALLOWED, true);
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| 90 | AddVariable(MULTIPLICATION_ALLOWED, true);
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| 91 | AddVariable(NOT_ALLOWED, true);
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| 92 | AddVariable(POWER_ALLOWED, true);
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| 93 | AddVariable(OR_ALLOWED, true);
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| 94 | AddVariable(SIGNUM_ALLOWED, true);
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| 95 | AddVariable(SINUS_ALLOWED, true);
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| 96 | AddVariable(SQRT_ALLOWED, true);
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| 97 | AddVariable(SUBTRACTION_ALLOWED, true);
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| 98 | AddVariable(TANGENS_ALLOWED, true);
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| 99 | AddVariable(XOR_ALLOWED, false);
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| 100 | }
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| 101 |
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| 102 | private void AddVariable(string name, bool allowed) {
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| 103 | AddVariableInfo(new VariableInfo(name, name + " allowed", typeof(BoolData), Core.VariableKind.New));
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| 104 | GetVariableInfo(name).Local = true;
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| 105 | AddVariable(new Core.Variable(name, new BoolData(allowed)));
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| 106 | }
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| 107 |
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| 108 | public override IOperation Apply(IScope scope) {
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| 109 | StructId.Variable variable;
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| 110 | GPOperatorLibrary operatorLibrary;
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| 111 | int targetVariable = GetVariableValue<IntData>(TARGETVARIABLE, scope, true).Data;
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| 112 |
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| 113 | // try to get minTimeOffset (use 0 as default if not available)
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| 114 | IItem minTimeOffsetItem = GetVariableValue(MINTIMEOFFSET, scope, true, false);
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| 115 | int minTimeOffset = minTimeOffsetItem == null ? 0 : ((IntData)minTimeOffsetItem).Data;
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| 116 | // try to get maxTimeOffset (use 0 as default if not available)
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| 117 | IItem maxTimeOffsetItem = GetVariableValue(MAXTIMEOFFSET, scope, true, false);
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| 118 | int maxTimeOffset = maxTimeOffsetItem == null ? 0 : ((IntData)maxTimeOffsetItem).Data;
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| 119 |
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| 120 | variable = new StructId.Variable();
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| 121 | StructId.Constant constant = new StructId.Constant();
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| 122 | StructId.Differential differential = new Differential();
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| 123 | StructId.Addition addition = new StructId.Addition();
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| 124 | StructId.And and = new StructId.And();
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| 125 | StructId.Average average = new StructId.Average();
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| 126 | StructId.Cosinus cosinus = new StructId.Cosinus();
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| 127 | StructId.Division division = new StructId.Division();
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| 128 | StructId.Equal equal = new StructId.Equal();
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| 129 | StructId.Exponential exponential = new StructId.Exponential();
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| 130 | StructId.GreaterThan greaterThan = new StructId.GreaterThan();
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| 131 | StructId.IfThenElse ifThenElse = new StructId.IfThenElse();
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| 132 | StructId.LessThan lessThan = new StructId.LessThan();
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| 133 | StructId.Logarithm logarithm = new StructId.Logarithm();
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| 134 | StructId.Multiplication multiplication = new StructId.Multiplication();
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| 135 | StructId.Not not = new StructId.Not();
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| 136 | StructId.Or or = new StructId.Or();
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| 137 | StructId.Power power = new StructId.Power();
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| 138 | StructId.Signum signum = new StructId.Signum();
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| 139 | StructId.Sinus sinus = new StructId.Sinus();
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| 140 | StructId.Sqrt sqrt = new StructId.Sqrt();
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| 141 | StructId.Subtraction subtraction = new StructId.Subtraction();
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| 142 | StructId.Tangens tangens = new StructId.Tangens();
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| 143 | StructId.Xor xor = new StructId.Xor();
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| 144 |
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| 145 |
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| 146 | List<IOperator> booleanFunctions = new List<IOperator>();
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| 147 | ConditionalAddOperator(AND_ALLOWED, and, booleanFunctions);
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| 148 | ConditionalAddOperator(EQUAL_ALLOWED, equal, booleanFunctions);
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| 149 | ConditionalAddOperator(GREATERTHAN_ALLOWED, greaterThan, booleanFunctions);
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| 150 | ConditionalAddOperator(LESSTHAN_ALLOWED, lessThan, booleanFunctions);
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| 151 | ConditionalAddOperator(NOT_ALLOWED, not, booleanFunctions);
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| 152 | ConditionalAddOperator(OR_ALLOWED, or, booleanFunctions);
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| 153 | ConditionalAddOperator(XOR_ALLOWED, xor, booleanFunctions);
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| 154 |
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| 155 | List<IOperator> doubleFunctions = new List<IOperator>();
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| 156 | ConditionalAddOperator(DIFFERENTIALS_ALLOWED, differential, doubleFunctions);
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| 157 | ConditionalAddOperator(VARIABLES_ALLOWED, variable, doubleFunctions);
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| 158 | ConditionalAddOperator(CONSTANTS_ALLOWED, constant, doubleFunctions);
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| 159 | ConditionalAddOperator(ADDITION_ALLOWED, addition, doubleFunctions);
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| 160 | ConditionalAddOperator(AVERAGE_ALLOWED, average, doubleFunctions);
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| 161 | ConditionalAddOperator(COSINUS_ALLOWED, cosinus, doubleFunctions);
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| 162 | ConditionalAddOperator(DIVISION_ALLOWED, division, doubleFunctions);
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| 163 | ConditionalAddOperator(EXPONENTIAL_ALLOWED, exponential, doubleFunctions);
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| 164 | ConditionalAddOperator(IFTHENELSE_ALLOWED, ifThenElse, doubleFunctions);
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| 165 | ConditionalAddOperator(LOGARTIHM_ALLOWED, logarithm, doubleFunctions);
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| 166 | ConditionalAddOperator(MULTIPLICATION_ALLOWED, multiplication, doubleFunctions);
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| 167 | ConditionalAddOperator(POWER_ALLOWED, power, doubleFunctions);
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| 168 | ConditionalAddOperator(SIGNUM_ALLOWED, signum, doubleFunctions);
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| 169 | ConditionalAddOperator(SINUS_ALLOWED, sinus, doubleFunctions);
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| 170 | ConditionalAddOperator(SQRT_ALLOWED, sqrt, doubleFunctions);
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| 171 | ConditionalAddOperator(SUBTRACTION_ALLOWED, subtraction, doubleFunctions);
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| 172 | ConditionalAddOperator(TANGENS_ALLOWED, tangens, doubleFunctions);
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| 173 |
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| 174 | SetAllowedSubOperators(and, booleanFunctions);
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| 175 | SetAllowedSubOperators(equal, doubleFunctions);
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| 176 | SetAllowedSubOperators(greaterThan, doubleFunctions);
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| 177 | SetAllowedSubOperators(lessThan, doubleFunctions);
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| 178 | SetAllowedSubOperators(not, booleanFunctions);
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| 179 | SetAllowedSubOperators(or, booleanFunctions);
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| 180 | SetAllowedSubOperators(xor, booleanFunctions);
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| 181 | SetAllowedSubOperators(addition, doubleFunctions);
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| 182 | SetAllowedSubOperators(average, doubleFunctions);
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| 183 | SetAllowedSubOperators(cosinus, doubleFunctions);
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| 184 | SetAllowedSubOperators(division, doubleFunctions);
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| 185 | SetAllowedSubOperators(exponential, doubleFunctions);
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| 186 | SetAllowedSubOperators(ifThenElse, 0, booleanFunctions);
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| 187 | SetAllowedSubOperators(ifThenElse, 1, doubleFunctions);
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| 188 | SetAllowedSubOperators(ifThenElse, 2, doubleFunctions);
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| 189 | SetAllowedSubOperators(logarithm, doubleFunctions);
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| 190 | SetAllowedSubOperators(multiplication, doubleFunctions);
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| 191 | SetAllowedSubOperators(power, doubleFunctions);
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| 192 | SetAllowedSubOperators(signum, doubleFunctions);
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| 193 | SetAllowedSubOperators(sinus, doubleFunctions);
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| 194 | SetAllowedSubOperators(sqrt, doubleFunctions);
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| 195 | SetAllowedSubOperators(subtraction, doubleFunctions);
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| 196 | SetAllowedSubOperators(tangens, doubleFunctions);
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| 197 |
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| 198 | operatorLibrary = new GPOperatorLibrary();
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| 199 | ConditionalAddOperator(DIFFERENTIALS_ALLOWED, operatorLibrary, differential);
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| 200 | ConditionalAddOperator(VARIABLES_ALLOWED, operatorLibrary, variable);
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| 201 | ConditionalAddOperator(CONSTANTS_ALLOWED, operatorLibrary, constant);
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| 202 | ConditionalAddOperator(ADDITION_ALLOWED, operatorLibrary, addition);
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| 203 | ConditionalAddOperator(AVERAGE_ALLOWED, operatorLibrary, average);
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| 204 | ConditionalAddOperator(AND_ALLOWED, operatorLibrary, and);
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| 205 | ConditionalAddOperator(COSINUS_ALLOWED, operatorLibrary, cosinus);
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| 206 | ConditionalAddOperator(DIVISION_ALLOWED, operatorLibrary, division);
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| 207 | ConditionalAddOperator(EQUAL_ALLOWED, operatorLibrary, equal);
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| 208 | ConditionalAddOperator(EXPONENTIAL_ALLOWED, operatorLibrary, exponential);
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| 209 | ConditionalAddOperator(GREATERTHAN_ALLOWED, operatorLibrary, greaterThan);
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| 210 | ConditionalAddOperator(IFTHENELSE_ALLOWED, operatorLibrary, ifThenElse);
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| 211 | ConditionalAddOperator(LESSTHAN_ALLOWED, operatorLibrary, lessThan);
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| 212 | ConditionalAddOperator(LOGARTIHM_ALLOWED, operatorLibrary, logarithm);
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| 213 | ConditionalAddOperator(MULTIPLICATION_ALLOWED, operatorLibrary, multiplication);
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| 214 | ConditionalAddOperator(NOT_ALLOWED, operatorLibrary, not);
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| 215 | ConditionalAddOperator(POWER_ALLOWED, operatorLibrary, power);
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| 216 | ConditionalAddOperator(OR_ALLOWED, operatorLibrary, or);
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| 217 | ConditionalAddOperator(SIGNUM_ALLOWED, operatorLibrary, signum);
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| 218 | ConditionalAddOperator(SINUS_ALLOWED, operatorLibrary, sinus);
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| 219 | ConditionalAddOperator(SQRT_ALLOWED, operatorLibrary, sqrt);
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| 220 | ConditionalAddOperator(SUBTRACTION_ALLOWED, operatorLibrary, subtraction);
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| 221 | ConditionalAddOperator(TANGENS_ALLOWED, operatorLibrary, tangens);
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| 222 | ConditionalAddOperator(XOR_ALLOWED, operatorLibrary, xor);
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| 223 |
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| 224 | variable.SetConstraints(minTimeOffset, maxTimeOffset);
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| 225 | differential.SetConstraints(minTimeOffset, maxTimeOffset);
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| 226 |
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| 227 | scope.AddVariable(new HeuristicLab.Core.Variable(scope.TranslateName(FUNCTIONLIBRARY), operatorLibrary));
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| 228 |
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| 229 | return null;
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| 230 | }
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| 231 |
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| 232 | private void ConditionalAddOperator(string condName, IOperator op, List<IOperator> list) {
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| 233 | if (GetVariableValue<BoolData>(condName, null, false).Data) list.Add(op);
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| 234 | }
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| 235 |
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| 236 | private void ConditionalAddOperator(string condName, GPOperatorLibrary operatorLibrary, IOperator op) {
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| 237 | if (GetVariableValue<BoolData>(condName, null, false).Data) operatorLibrary.GPOperatorGroup.AddOperator(op);
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| 238 | }
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| 239 |
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| 240 | private void SetAllowedSubOperators(IFunction f, List<IOperator> gs) {
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| 241 | foreach (IConstraint c in f.Constraints) {
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| 242 | if (c is SubOperatorTypeConstraint) {
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| 243 | SubOperatorTypeConstraint typeConstraint = c as SubOperatorTypeConstraint;
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| 244 | typeConstraint.Clear();
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| 245 | foreach (IOperator g in gs) {
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| 246 | typeConstraint.AddOperator(g);
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| 247 | }
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| 248 | } else if (c is AllSubOperatorsTypeConstraint) {
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| 249 | AllSubOperatorsTypeConstraint typeConstraint = c as AllSubOperatorsTypeConstraint;
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| 250 | typeConstraint.Clear();
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| 251 | foreach (IOperator g in gs) {
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| 252 | typeConstraint.AddOperator(g);
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| 253 | }
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| 254 | }
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| 255 | }
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| 256 | }
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| 257 |
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| 258 | private void SetAllowedSubOperators(IFunction f, int p, List<IOperator> gs) {
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| 259 | foreach (IConstraint c in f.Constraints) {
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| 260 | if (c is SubOperatorTypeConstraint) {
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| 261 | SubOperatorTypeConstraint typeConstraint = c as SubOperatorTypeConstraint;
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| 262 | if (typeConstraint.SubOperatorIndex.Data == p) {
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| 263 | typeConstraint.Clear();
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| 264 | foreach (IOperator g in gs) {
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| 265 | typeConstraint.AddOperator(g);
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| 266 | }
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| 267 | }
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| 268 | }
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| 269 | }
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| 270 | }
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| 271 | }
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| 272 | }
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