[5333] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7259] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[5333] | 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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[5393] | 22 | using System.Collections.Generic;
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[5333] | 23 | using System.Linq;
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| 24 | using HeuristicLab.Common;
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| 25 | using HeuristicLab.Core;
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| 26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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| 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 28 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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| 29 | [StorableClass]
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| 30 | [Item("TypeCoherentExpressionGrammar", "Represents a grammar for functional expressions in which special syntactic constraints are enforced so that boolean and real-valued expressions are not mixed.")]
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[5686] | 31 | public class TypeCoherentExpressionGrammar : SymbolicExpressionGrammar, ISymbolicDataAnalysisGrammar {
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[6803] | 32 | private const string ArithmeticFunctionsName = "Arithmetic Functions";
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| 33 | private const string TrigonometricFunctionsName = "Trigonometric Functions";
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| 34 | private const string ExponentialFunctionsName = "Exponential and Logarithmic Functions";
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| 35 | private const string RealValuedSymbolsName = "Real Valued Symbols";
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| 36 | private const string TerminalsName = "Terminals";
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| 37 | private const string PowerFunctionsName = "Power Functions";
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| 38 | private const string ConditionsName = "Conditions";
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| 39 | private const string ComparisonsName = "Comparisons";
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| 40 | private const string BooleanOperatorsName = "Boolean Operators";
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| 41 | private const string ConditionalSymbolsName = "ConditionalSymbols";
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[7696] | 42 | private const string SpecialFunctionsName = "Special Functions";
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[6803] | 43 | private const string TimeSeriesSymbolsName = "Time Series Symbols";
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[5333] | 44 |
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| 45 | [StorableConstructor]
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| 46 | protected TypeCoherentExpressionGrammar(bool deserializing) : base(deserializing) { }
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| 47 | protected TypeCoherentExpressionGrammar(TypeCoherentExpressionGrammar original, Cloner cloner) : base(original, cloner) { }
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| 48 | public TypeCoherentExpressionGrammar()
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[5688] | 49 | : base(ItemAttribute.GetName(typeof(TypeCoherentExpressionGrammar)), ItemAttribute.GetDescription(typeof(TypeCoherentExpressionGrammar))) {
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[5333] | 50 | Initialize();
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| 51 | }
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| 52 | public override IDeepCloneable Clone(Cloner cloner) {
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| 53 | return new TypeCoherentExpressionGrammar(this, cloner);
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| 54 | }
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| 55 |
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| 56 | private void Initialize() {
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[6803] | 57 | #region symbol declaration
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[5333] | 58 | var add = new Addition();
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| 59 | var sub = new Subtraction();
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| 60 | var mul = new Multiplication();
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| 61 | var div = new Division();
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| 62 | var mean = new Average();
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| 63 | var sin = new Sine();
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| 64 | var cos = new Cosine();
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| 65 | var tan = new Tangent();
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| 66 | var log = new Logarithm();
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| 67 | var pow = new Power();
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[7695] | 68 | var square = new Square();
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[5393] | 69 | var root = new Root();
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[7695] | 70 | var sqrt = new SquareRoot();
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[5333] | 71 | var exp = new Exponential();
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[7696] | 72 |
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| 73 | var airyA = new AiryA();
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| 74 | var airyB = new AiryB();
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| 75 | var bessel = new Bessel();
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| 76 | var cosineIntegral = new CosineIntegral();
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| 77 | var dawson = new Dawson();
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| 78 | var erf = new Erf();
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| 79 | var expIntegralEi = new ExponentialIntegralEi();
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| 80 | var fresnelCosineIntegral = new FresnelCosineIntegral();
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| 81 | var fresnelSineIntegral = new FresnelSineIntegral();
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| 82 | var gamma = new Gamma();
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| 83 | var hypCosineIntegral = new HyperbolicCosineIntegral();
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| 84 | var hypSineIntegral = new HyperbolicSineIntegral();
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| 85 | var norm = new Norm();
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| 86 | var psi = new Psi();
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| 87 | var sineIntegral = new SineIntegral();
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| 88 |
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[5333] | 89 | var @if = new IfThenElse();
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| 90 | var gt = new GreaterThan();
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| 91 | var lt = new LessThan();
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| 92 | var and = new And();
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| 93 | var or = new Or();
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| 94 | var not = new Not();
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[6803] | 95 | var variableCondition = new VariableCondition();
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[5393] | 96 |
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| 97 | var timeLag = new TimeLag();
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| 98 | var integral = new Integral();
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| 99 | var derivative = new Derivative();
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| 100 |
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[5333] | 101 | var constant = new Constant();
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| 102 | constant.MinValue = -20;
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| 103 | constant.MaxValue = 20;
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[6803] | 104 | var variableSymbol = new Variable();
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[5333] | 105 | var laggedVariable = new LaggedVariable();
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[9363] | 106 | var autoregressiveVariable = new AutoregressiveTargetVariable();
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[6803] | 107 | #endregion
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[5333] | 108 |
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[6803] | 109 | #region group symbol declaration
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| 110 | var arithmeticSymbols = new GroupSymbol(ArithmeticFunctionsName, new List<ISymbol>() { add, sub, mul, div, mean });
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| 111 | var trigonometricSymbols = new GroupSymbol(TrigonometricFunctionsName, new List<ISymbol>() { sin, cos, tan });
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| 112 | var exponentialAndLogarithmicSymbols = new GroupSymbol(ExponentialFunctionsName, new List<ISymbol> { exp, log });
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[7696] | 113 | var specialFunctions = new GroupSymbol(SpecialFunctionsName, new List<ISymbol> { airyA, airyB, bessel, cosineIntegral, dawson, erf, expIntegralEi,
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| 114 | fresnelCosineIntegral,fresnelSineIntegral,gamma,hypCosineIntegral,hypSineIntegral,norm, psi, sineIntegral});
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[6803] | 115 | var terminalSymbols = new GroupSymbol(TerminalsName, new List<ISymbol> { constant, variableSymbol });
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[7696] | 116 | var realValuedSymbols = new GroupSymbol(RealValuedSymbolsName, new List<ISymbol>() { arithmeticSymbols, trigonometricSymbols, exponentialAndLogarithmicSymbols, specialFunctions, terminalSymbols });
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[5333] | 117 |
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[7695] | 118 | var powerSymbols = new GroupSymbol(PowerFunctionsName, new List<ISymbol> { square, pow, sqrt, root });
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[5333] | 119 |
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[6803] | 120 | var conditionSymbols = new GroupSymbol(ConditionsName, new List<ISymbol> { @if, variableCondition });
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| 121 | var comparisonSymbols = new GroupSymbol(ComparisonsName, new List<ISymbol> { gt, lt });
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| 122 | var booleanOperationSymbols = new GroupSymbol(BooleanOperatorsName, new List<ISymbol> { and, or, not });
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| 123 | var conditionalSymbols = new GroupSymbol(ConditionalSymbolsName, new List<ISymbol> { conditionSymbols, comparisonSymbols, booleanOperationSymbols });
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[5333] | 124 |
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[9363] | 125 | var timeSeriesSymbols = new GroupSymbol(TimeSeriesSymbolsName, new List<ISymbol> { timeLag, integral, derivative, laggedVariable, autoregressiveVariable });
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[6803] | 126 | #endregion
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[5333] | 127 |
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[6803] | 128 | AddSymbol(realValuedSymbols);
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| 129 | AddSymbol(powerSymbols);
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| 130 | AddSymbol(conditionalSymbols);
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| 131 | AddSymbol(timeSeriesSymbols);
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[5333] | 132 |
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[6803] | 133 | #region subtree count configuration
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| 134 | SetSubtreeCount(arithmeticSymbols, 2, 2);
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| 135 | SetSubtreeCount(trigonometricSymbols, 1, 1);
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[7695] | 136 | SetSubtreeCount(pow, 2, 2);
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| 137 | SetSubtreeCount(root, 2, 2);
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| 138 | SetSubtreeCount(square, 1, 1);
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| 139 | SetSubtreeCount(sqrt, 1, 1);
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[6803] | 140 | SetSubtreeCount(exponentialAndLogarithmicSymbols, 1, 1);
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[7696] | 141 | SetSubtreeCount(specialFunctions, 1, 1);
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[6803] | 142 | SetSubtreeCount(terminalSymbols, 0, 0);
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[5333] | 143 |
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[6803] | 144 | SetSubtreeCount(@if, 3, 3);
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| 145 | SetSubtreeCount(variableCondition, 2, 2);
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| 146 | SetSubtreeCount(comparisonSymbols, 2, 2);
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| 147 | SetSubtreeCount(and, 2, 2);
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| 148 | SetSubtreeCount(or, 2, 2);
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| 149 | SetSubtreeCount(not, 1, 1);
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[5333] | 150 |
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[6803] | 151 | SetSubtreeCount(timeLag, 1, 1);
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| 152 | SetSubtreeCount(integral, 1, 1);
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| 153 | SetSubtreeCount(derivative, 1, 1);
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| 154 | SetSubtreeCount(laggedVariable, 0, 0);
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[9363] | 155 | SetSubtreeCount(autoregressiveVariable, 0, 0);
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[6803] | 156 | #endregion
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[5333] | 157 |
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[6819] | 158 | #region allowed child symbols configuration
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[6803] | 159 | AddAllowedChildSymbol(StartSymbol, realValuedSymbols);
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| 160 | AddAllowedChildSymbol(DefunSymbol, realValuedSymbols);
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[5333] | 161 |
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[6803] | 162 | AddAllowedChildSymbol(realValuedSymbols, realValuedSymbols);
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| 163 | AddAllowedChildSymbol(realValuedSymbols, powerSymbols);
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| 164 | AddAllowedChildSymbol(realValuedSymbols, conditionSymbols);
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| 165 | AddAllowedChildSymbol(realValuedSymbols, timeSeriesSymbols);
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[7696] | 166 | AddAllowedChildSymbol(realValuedSymbols, specialFunctions);
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[5333] | 167 |
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[6803] | 168 | AddAllowedChildSymbol(powerSymbols, variableSymbol, 0);
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[7071] | 169 | AddAllowedChildSymbol(powerSymbols, laggedVariable, 0);
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[6803] | 170 | AddAllowedChildSymbol(powerSymbols, constant, 1);
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[7695] | 171 | AddAllowedChildSymbol(square, realValuedSymbols, 0);
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| 172 | AddAllowedChildSymbol(sqrt, realValuedSymbols, 0);
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[5333] | 173 |
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[6803] | 174 | AddAllowedChildSymbol(@if, comparisonSymbols, 0);
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| 175 | AddAllowedChildSymbol(@if, booleanOperationSymbols, 0);
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| 176 | AddAllowedChildSymbol(@if, conditionSymbols, 1);
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| 177 | AddAllowedChildSymbol(@if, realValuedSymbols, 1);
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| 178 | AddAllowedChildSymbol(@if, powerSymbols, 1);
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| 179 | AddAllowedChildSymbol(@if, timeSeriesSymbols, 1);
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| 180 | AddAllowedChildSymbol(@if, conditionSymbols, 2);
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| 181 | AddAllowedChildSymbol(@if, realValuedSymbols, 2);
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| 182 | AddAllowedChildSymbol(@if, powerSymbols, 2);
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| 183 | AddAllowedChildSymbol(@if, timeSeriesSymbols, 2);
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[5333] | 184 |
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[6803] | 185 | AddAllowedChildSymbol(booleanOperationSymbols, comparisonSymbols);
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| 186 | AddAllowedChildSymbol(comparisonSymbols, realValuedSymbols);
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| 187 | AddAllowedChildSymbol(comparisonSymbols, powerSymbols);
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| 188 | AddAllowedChildSymbol(comparisonSymbols, conditionSymbols);
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| 189 | AddAllowedChildSymbol(comparisonSymbols, timeSeriesSymbols);
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[5333] | 190 |
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[6803] | 191 | AddAllowedChildSymbol(variableCondition, realValuedSymbols);
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| 192 | AddAllowedChildSymbol(variableCondition, powerSymbols);
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| 193 | AddAllowedChildSymbol(variableCondition, conditionSymbols);
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| 194 | AddAllowedChildSymbol(variableCondition, timeSeriesSymbols);
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[5333] | 195 |
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[6803] | 196 |
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| 197 | AddAllowedChildSymbol(timeLag, realValuedSymbols);
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| 198 | AddAllowedChildSymbol(timeLag, powerSymbols);
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| 199 | AddAllowedChildSymbol(timeLag, conditionSymbols);
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| 200 |
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| 201 | AddAllowedChildSymbol(integral, realValuedSymbols);
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| 202 | AddAllowedChildSymbol(integral, powerSymbols);
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| 203 | AddAllowedChildSymbol(integral, conditionSymbols);
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| 204 |
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| 205 | AddAllowedChildSymbol(derivative, realValuedSymbols);
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| 206 | AddAllowedChildSymbol(derivative, powerSymbols);
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| 207 | AddAllowedChildSymbol(derivative, conditionSymbols);
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| 208 | #endregion
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[5333] | 209 | }
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[6803] | 210 |
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| 211 | public void ConfigureAsDefaultRegressionGrammar() {
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[7696] | 212 | Symbols.First(s => s is Average).Enabled = false;
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| 213 | Symbols.First(s => s.Name == TrigonometricFunctionsName).Enabled = false;
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| 214 | Symbols.First(s => s.Name == PowerFunctionsName).Enabled = false;
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| 215 | Symbols.First(s => s.Name == SpecialFunctionsName).Enabled = false;
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| 216 | Symbols.First(s => s.Name == ConditionalSymbolsName).Enabled = false;
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| 217 | Symbols.First(s => s.Name == TimeSeriesSymbolsName).Enabled = false;
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[6803] | 218 | }
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| 219 |
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| 220 | public void ConfigureAsDefaultClassificationGrammar() {
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[7696] | 221 | Symbols.First(s => s is Average).Enabled = false;
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| 222 | Symbols.First(s => s is VariableCondition).Enabled = false;
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| 223 | Symbols.First(s => s.Name == TrigonometricFunctionsName).Enabled = false;
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| 224 | Symbols.First(s => s.Name == ExponentialFunctionsName).Enabled = false;
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| 225 | Symbols.First(s => s.Name == SpecialFunctionsName).Enabled = false;
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| 226 | Symbols.First(s => s.Name == PowerFunctionsName).Enabled = false;
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| 227 | Symbols.First(s => s.Name == TimeSeriesSymbolsName).Enabled = false;
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[6803] | 228 | }
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[9363] | 229 |
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| 230 | public void ConfigureAsDefaultTimeSeriesPrognosisGrammar() {
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| 231 | Symbols.First(s => s is Average).Enabled = false;
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| 232 | Symbols.First(s => s.Name == TrigonometricFunctionsName).Enabled = false;
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| 233 | Symbols.First(s => s.Name == PowerFunctionsName).Enabled = false;
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| 234 | Symbols.First(s => s.Name == ConditionalSymbolsName).Enabled = false;
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| 235 | Symbols.First(s => s.Name == SpecialFunctionsName).Enabled = false;
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| 236 |
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| 237 | Symbols.First(s => s.Name == TimeSeriesSymbolsName).Enabled = true;
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| 238 | Symbols.First(s => s is Derivative).Enabled = false;
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| 239 | Symbols.First(s => s is Integral).Enabled = false;
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| 240 | Symbols.First(s => s is TimeLag).Enabled = false;
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| 241 | }
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[5333] | 242 | }
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| 243 | }
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