[3841] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7290] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3841] | 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.Collections.Generic;
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[5686] | 23 | using System.Linq;
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[4722] | 24 | using HeuristicLab.Common;
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[3841] | 25 | using HeuristicLab.Core;
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[4068] | 26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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[3841] | 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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[5574] | 28 |
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[3841] | 29 | namespace HeuristicLab.Problems.DataAnalysis.Symbolic {
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| 30 | [StorableClass]
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| 31 | [Item("FullFunctionalExpressionGrammar", "Represents a grammar for functional expressions using all available functions.")]
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[5686] | 32 | public class FullFunctionalExpressionGrammar : SymbolicExpressionGrammar, ISymbolicDataAnalysisGrammar {
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[4722] | 33 | [StorableConstructor]
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| 34 | protected FullFunctionalExpressionGrammar(bool deserializing) : base(deserializing) { }
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| 35 | protected FullFunctionalExpressionGrammar(FullFunctionalExpressionGrammar original, Cloner cloner) : base(original, cloner) { }
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[3841] | 36 | public FullFunctionalExpressionGrammar()
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[5688] | 37 | : base(ItemAttribute.GetName(typeof(FullFunctionalExpressionGrammar)), ItemAttribute.GetDescription(typeof(FullFunctionalExpressionGrammar))) {
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[3841] | 38 | Initialize();
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| 39 | }
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| 40 |
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[4722] | 41 | public override IDeepCloneable Clone(Cloner cloner) {
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| 42 | return new FullFunctionalExpressionGrammar(this, cloner);
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| 43 | }
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| 44 |
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[3841] | 45 | private void Initialize() {
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| 46 | var add = new Addition();
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| 47 | var sub = new Subtraction();
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| 48 | var mul = new Multiplication();
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| 49 | var div = new Division();
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| 50 | var mean = new Average();
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| 51 | var sin = new Sine();
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| 52 | var cos = new Cosine();
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| 53 | var tan = new Tangent();
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| 54 | var log = new Logarithm();
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[5288] | 55 | var pow = new Power();
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[5384] | 56 | pow.InitialFrequency = 0.0;
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| 57 | var root = new Root();
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| 58 | root.InitialFrequency = 0.0;
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[3841] | 59 | var exp = new Exponential();
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| 60 | var @if = new IfThenElse();
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| 61 | var gt = new GreaterThan();
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| 62 | var lt = new LessThan();
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| 63 | var and = new And();
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| 64 | var or = new Or();
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| 65 | var not = new Not();
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[5373] | 66 |
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| 67 | var timeLag = new TimeLag();
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| 68 | timeLag.InitialFrequency = 0.0;
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| 69 | var integral = new Integral();
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| 70 | integral.InitialFrequency = 0.0;
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| 71 | var derivative = new Derivative();
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| 72 | derivative.InitialFrequency = 0.0;
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| 73 |
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[5467] | 74 | var variableCondition = new VariableCondition();
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| 75 | variableCondition.InitialFrequency = 0.0;
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| 76 |
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[3841] | 77 | var constant = new Constant();
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| 78 | constant.MinValue = -20;
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| 79 | constant.MaxValue = 20;
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[5574] | 80 | var variableSymbol = new HeuristicLab.Problems.DataAnalysis.Symbolic.Variable();
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[4249] | 81 | var laggedVariable = new LaggedVariable();
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| 82 | laggedVariable.InitialFrequency = 0.0;
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[3841] | 83 |
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[5467] | 84 | var allSymbols = new List<Symbol>() { add, sub, mul, div, mean, sin, cos, tan, log, pow, root, exp, @if, gt, lt, and, or, not, timeLag, integral, derivative, constant, variableSymbol, laggedVariable, variableCondition };
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[5373] | 85 | var unaryFunctionSymbols = new List<Symbol>() { sin, cos, tan, log, exp, not, timeLag, integral, derivative };
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| 86 |
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[5467] | 87 | var binaryFunctionSymbols = new List<Symbol>() { pow, root, gt, lt, variableCondition };
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[3993] | 88 | var functionSymbols = new List<Symbol>() { add, sub, mul, div, mean, and, or };
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[4249] | 89 | var terminalSymbols = new List<Symbol>() { variableSymbol, constant, laggedVariable };
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[3841] | 90 |
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| 91 | foreach (var symb in allSymbols)
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| 92 | AddSymbol(symb);
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| 93 |
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| 94 | foreach (var funSymb in functionSymbols) {
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[5686] | 95 | SetSubtreeCount(funSymb, 1, 3);
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[3841] | 96 | }
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| 97 | foreach (var funSymb in unaryFunctionSymbols) {
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[5686] | 98 | SetSubtreeCount(funSymb, 1, 1);
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[3841] | 99 | }
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| 100 | foreach (var funSymb in binaryFunctionSymbols) {
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[5686] | 101 | SetSubtreeCount(funSymb, 2, 2);
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[3841] | 102 | }
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[4249] | 103 | foreach (var terminalSymbol in terminalSymbols) {
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[5686] | 104 | SetSubtreeCount(terminalSymbol, 0, 0);
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[4249] | 105 | }
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| 106 |
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[5686] | 107 | SetSubtreeCount(@if, 3, 3);
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[3841] | 108 |
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[4249] | 109 |
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[3841] | 110 | // allow each symbol as child of the start symbol
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| 111 | foreach (var symb in allSymbols) {
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[5686] | 112 | AddAllowedChildSymbol(StartSymbol, symb);
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[5726] | 113 | AddAllowedChildSymbol(DefunSymbol, symb);
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[3841] | 114 | }
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| 115 |
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| 116 | // allow each symbol as child of every other symbol (except for terminals that have maxSubtreeCount == 0)
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[5686] | 117 | foreach (var parent in allSymbols.Except(terminalSymbols)) {
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| 118 | foreach (var child in allSymbols)
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| 119 | AddAllowedChildSymbol(parent, child);
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[3841] | 120 | }
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| 121 | }
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| 122 | }
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| 123 | }
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