[4951] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2010 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.Globalization;
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| 25 | using System.Linq;
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| 26 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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| 27 | using HeuristicLab.Problems.DataAnalysis.Symbolic;
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| 28 | using HeuristicLab.Random;
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| 29 | using Microsoft.VisualStudio.TestTools.UnitTesting;
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| 30 | namespace HeuristicLab.Problems.DataAnalysis.Tests {
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| 31 |
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| 32 |
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| 33 | /// <summary>
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| 34 | ///This is a test class for SimpleArithmeticExpressionInterpreter and is intended
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| 35 | ///to contain all SimpleArithmeticExpressionInterpreter Unit Tests
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| 36 | ///</summary>
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| 37 | [TestClass()]
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| 38 | public class SimpleArithmeticExpressionInterpreterTest {
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| 39 | private const int N = 1000;
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| 40 | private const int Rows = 1000;
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| 41 | private const int Columns = 50;
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| 42 | private static SymbolicExpressionTree[] randomTrees;
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| 43 | private static Dataset dataset;
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| 44 | private static MersenneTwister twister;
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| 45 | private TestContext testContextInstance;
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| 46 |
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| 47 | /// <summary>
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| 48 | ///Gets or sets the test context which provides
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| 49 | ///information about and functionality for the current test run.
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| 50 | ///</summary>
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| 51 | public TestContext TestContext {
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| 52 | get {
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| 53 | return testContextInstance;
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| 54 | }
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| 55 | set {
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| 56 | testContextInstance = value;
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| 57 | }
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| 58 | }
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| 59 |
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| 60 | [ClassInitialize()]
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| 61 | public static void CreateRandomTrees(TestContext testContext) {
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| 62 | twister = new MersenneTwister();
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| 63 | dataset = Util.CreateRandomDataset(twister, Rows, Columns);
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| 64 | var grammar = new GlobalSymbolicExpressionGrammar(new FullFunctionalExpressionGrammar());
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| 65 | grammar.MaxFunctionArguments = 0;
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| 66 | grammar.MaxFunctionDefinitions = 0;
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| 67 | grammar.MinFunctionArguments = 0;
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| 68 | grammar.MinFunctionDefinitions = 0;
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| 69 | randomTrees = Util.CreateRandomTrees(twister, dataset, grammar, N, 1, 100, 0, 0);
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| 70 | }
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| 71 |
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| 72 | [TestMethod]
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| 73 | public void SimpleArithmeticExpressionInterpreterPerformanceTest() {
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| 74 | double[] estimation = new double[Rows];
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| 75 | foreach (SymbolicExpressionTree tree in randomTrees) {
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| 76 | Util.InitTree(tree, twister, new List<string>(dataset.VariableNames));
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| 77 | }
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| 78 | SimpleArithmeticExpressionInterpreter interpreter = new SimpleArithmeticExpressionInterpreter();
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| 79 | Util.EvaluateTrees(randomTrees, interpreter, dataset, 10);
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| 80 | }
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| 81 |
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| 82 |
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| 83 | /// <summary>
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| 84 | ///A test for Evaluate
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| 85 | ///</summary>
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| 86 | [TestMethod]
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| 87 | public void SimpleArithmeticExpressionInterpreterEvaluateTest() {
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| 88 |
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| 89 | Dataset ds = new Dataset(new string[] { "Y", "A", "B" }, new double[,] {
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| 90 | { 1.0, 1.0, 1.0 },
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| 91 | { 2.0, 2.0, 2.0 },
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| 92 | { 3.0, 1.0, 2.0 }
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| 93 | });
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| 94 |
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| 95 | SimpleArithmeticExpressionInterpreter interpreter = new SimpleArithmeticExpressionInterpreter();
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| 96 |
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| 97 | // constants
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| 98 | Evaluate(interpreter, ds, "(+ 1.5 3.5)", 0, 5.0);
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| 99 |
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| 100 | // variables
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| 101 | Evaluate(interpreter, ds, "(variable 2.0 a)", 0, 2.0);
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| 102 | Evaluate(interpreter, ds, "(variable 2.0 a)", 1, 4.0);
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| 103 |
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| 104 |
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| 105 | // addition
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| 106 | Evaluate(interpreter, ds, "(+ (variable 2.0 a ))", 1, 4.0);
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| 107 | Evaluate(interpreter, ds, "(+ (variable 2.0 a ) (variable 3.0 b ))", 0, 5.0);
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| 108 | Evaluate(interpreter, ds, "(+ (variable 2.0 a ) (variable 3.0 b ))", 1, 10.0);
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| 109 | Evaluate(interpreter, ds, "(+ (variable 2.0 a) (variable 3.0 b ))", 2, 8.0);
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| 110 | Evaluate(interpreter, ds, "(+ 8.0 2.0 2.0)", 0, 12.0);
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| 111 |
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| 112 | // subtraction
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| 113 | Evaluate(interpreter, ds, "(- (variable 2.0 a ))", 1, -4.0);
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| 114 | Evaluate(interpreter, ds, "(- (variable 2.0 a ) (variable 3.0 b))", 0, -1.0);
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| 115 | Evaluate(interpreter, ds, "(- (variable 2.0 a ) (variable 3.0 b ))", 1, -2.0);
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| 116 | Evaluate(interpreter, ds, "(- (variable 2.0 a ) (variable 3.0 b ))", 2, -4.0);
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| 117 | Evaluate(interpreter, ds, "(- 8.0 2.0 2.0)", 0, 4.0);
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| 118 |
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| 119 | // multiplication
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| 120 | Evaluate(interpreter, ds, "(* (variable 2.0 a ))", 0, 2.0);
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| 121 | Evaluate(interpreter, ds, "(* (variable 2.0 a ) (variable 3.0 b ))", 0, 6.0);
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| 122 | Evaluate(interpreter, ds, "(* (variable 2.0 a ) (variable 3.0 b ))", 1, 24.0);
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| 123 | Evaluate(interpreter, ds, "(* (variable 2.0 a ) (variable 3.0 b ))", 2, 12.0);
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| 124 | Evaluate(interpreter, ds, "(* 8.0 2.0 2.0)", 0, 32.0);
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| 125 |
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| 126 | // division
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| 127 | Evaluate(interpreter, ds, "(/ (variable 2.0 a ))", 1, 1.0 / 4.0);
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| 128 | Evaluate(interpreter, ds, "(/ (variable 2.0 a ) 2.0)", 0, 1.0);
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| 129 | Evaluate(interpreter, ds, "(/ (variable 2.0 a ) 2.0)", 1, 2.0);
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| 130 | Evaluate(interpreter, ds, "(/ (variable 3.0 b ) 2.0)", 2, 3.0);
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| 131 | Evaluate(interpreter, ds, "(/ 8.0 2.0 2.0)", 0, 2.0);
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| 132 |
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| 133 | // gt
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| 134 | Evaluate(interpreter, ds, "(> (variable 2.0 a) 2.0)", 0, -1.0);
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| 135 | Evaluate(interpreter, ds, "(> 2.0 (variable 2.0 a))", 0, -1.0);
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| 136 | Evaluate(interpreter, ds, "(> (variable 2.0 a) 1.9)", 0, 1.0);
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| 137 | Evaluate(interpreter, ds, "(> 1.9 (variable 2.0 a))", 0, -1.0);
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| 138 | //Evaluate(interpreter, ds, "(> (sqrt -1.0) (log -1.0))", 0, -1.0); // (> nan nan) should be false
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| 139 |
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| 140 | // lt
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| 141 | Evaluate(interpreter, ds, "(< (variable 2.0 a) 2.0)", 0, -1.0);
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| 142 | Evaluate(interpreter, ds, "(< 2.0 (variable 2.0 a))", 0, -1.0);
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| 143 | Evaluate(interpreter, ds, "(< (variable 2.0 a) 1.9)", 0, -1.0);
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| 144 | Evaluate(interpreter, ds, "(< 1.9 (variable 2.0 a))", 0, 1.0);
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| 145 | //Evaluate(interpreter, ds, "(< (sqrt -1,0) (log -1,0))", 0, -1.0); // (< nan nan) should be false
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| 146 |
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| 147 | // If
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| 148 | Evaluate(interpreter, ds, "(if -10.0 2.0 3.0)", 0, 3.0);
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| 149 | Evaluate(interpreter, ds, "(if -1.0 2.0 3.0)", 0, 3.0);
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| 150 | Evaluate(interpreter, ds, "(if 0.0 2.0 3.0)", 0, 3.0);
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| 151 | Evaluate(interpreter, ds, "(if 1.0 2.0 3.0)", 0, 2.0);
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| 152 | Evaluate(interpreter, ds, "(if 10.0 2.0 3.0)", 0, 2.0);
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| 153 | // Evaluate(interpreter, ds, "(if (sqrt -1.0) 2.0 3.0)", 0, 3.0); // if(nan) should return the else branch
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| 154 |
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| 155 | // NOT
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| 156 | Evaluate(interpreter, ds, "(not -1.0)", 0, 1.0);
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| 157 | Evaluate(interpreter, ds, "(not -2.0)", 0, 2.0);
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| 158 | Evaluate(interpreter, ds, "(not 1.0)", 0, -1.0);
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| 159 | Evaluate(interpreter, ds, "(not 2.0)", 0, -2.0);
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| 160 | Evaluate(interpreter, ds, "(not 0.0)", 0, 0.0);
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| 161 |
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| 162 | // AND
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| 163 | Evaluate(interpreter, ds, "(and -1.0 -2.0)", 0, -1.0);
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| 164 | Evaluate(interpreter, ds, "(and -1.0 2.0)", 0, -1.0);
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| 165 | Evaluate(interpreter, ds, "(and 1.0 -2.0)", 0, -1.0);
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| 166 | Evaluate(interpreter, ds, "(and 1.0 0.0)", 0, -1.0);
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| 167 | Evaluate(interpreter, ds, "(and 0.0 0.0)", 0, -1.0);
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| 168 | Evaluate(interpreter, ds, "(and 1.0 2.0)", 0, 1.0);
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| 169 | Evaluate(interpreter, ds, "(and 1.0 2.0 3.0)", 0, 1.0);
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| 170 | Evaluate(interpreter, ds, "(and 1.0 -2.0 3.0)", 0, -1.0);
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| 171 |
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| 172 | // OR
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| 173 | Evaluate(interpreter, ds, "(or -1.0 -2.0)", 0, -1.0);
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| 174 | Evaluate(interpreter, ds, "(or -1.0 2.0)", 0, 1.0);
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| 175 | Evaluate(interpreter, ds, "(or 1.0 -2.0)", 0, 1.0);
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| 176 | Evaluate(interpreter, ds, "(or 1.0 2.0)", 0, 1.0);
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| 177 | Evaluate(interpreter, ds, "(or 0.0 0.0)", 0, -1.0);
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| 178 | Evaluate(interpreter, ds, "(or -1.0 -2.0 -3.0)", 0, -1.0);
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| 179 | Evaluate(interpreter, ds, "(or -1.0 -2.0 3.0)", 0, 1.0);
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| 180 |
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| 181 | // sin, cos, tan
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| 182 | Evaluate(interpreter, ds, "(sin " + Math.PI.ToString(NumberFormatInfo.InvariantInfo) + ")", 0, 0.0);
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| 183 | Evaluate(interpreter, ds, "(sin 0.0)", 0, 0.0);
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| 184 | Evaluate(interpreter, ds, "(cos " + Math.PI.ToString(NumberFormatInfo.InvariantInfo) + ")", 0, -1.0);
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| 185 | Evaluate(interpreter, ds, "(cos 0.0)", 0, 1.0);
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| 186 | Evaluate(interpreter, ds, "(tan " + Math.PI.ToString(NumberFormatInfo.InvariantInfo) + ")", 0, Math.Tan(Math.PI));
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| 187 | Evaluate(interpreter, ds, "(tan 0.0)", 0, Math.Tan(Math.PI));
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| 188 |
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| 189 | // exp, log
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| 190 | Evaluate(interpreter, ds, "(log (exp 7.0))", 0, Math.Log(Math.Exp(7)));
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| 191 | Evaluate(interpreter, ds, "(exp (log 7.0))", 0, Math.Exp(Math.Log(7)));
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| 192 | Evaluate(interpreter, ds, "(log -3.0)", 0, Math.Log(-3));
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| 193 |
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| 194 | // mean
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| 195 | Evaluate(interpreter, ds, "(mean -1.0 1.0 -1.0)", 0, -1.0 / 3.0);
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| 196 |
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| 197 | // ADF
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| 198 | Evaluate(interpreter, ds, @"(PROG
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| 199 | (MAIN
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| 200 | (CALL ADF0))
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| 201 | (defun ADF0 1.0))", 1, 1.0);
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| 202 | Evaluate(interpreter, ds, @"(PROG
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| 203 | (MAIN
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| 204 | (* (CALL ADF0) (CALL ADF0)))
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| 205 | (defun ADF0 2.0))", 1, 4.0);
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| 206 | Evaluate(interpreter, ds, @"(PROG
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| 207 | (MAIN
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| 208 | (CALL ADF0 2.0 3.0))
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| 209 | (defun ADF0
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| 210 | (+ (ARG 0) (ARG 1))))", 1, 5.0);
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| 211 | Evaluate(interpreter, ds, @"(PROG
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| 212 | (MAIN (CALL ADF1 2.0 3.0))
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| 213 | (defun ADF0
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| 214 | (- (ARG 1) (ARG 0)))
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| 215 | (defun ADF1
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| 216 | (+ (CALL ADF0 (ARG 1) (ARG 0))
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| 217 | (CALL ADF0 (ARG 0) (ARG 1)))))", 1, 0.0);
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| 218 | Evaluate(interpreter, ds, @"(PROG
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| 219 | (MAIN (CALL ADF1 (variable 2.0 a) 3.0))
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| 220 | (defun ADF0
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| 221 | (- (ARG 1) (ARG 0)))
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| 222 | (defun ADF1
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| 223 | (CALL ADF0 (ARG 1) (ARG 0))))", 1, 1.0);
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| 224 | Evaluate(interpreter, ds, @"(PROG
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| 225 | (MAIN (CALL ADF1 (variable 2.0 a) 3.0))
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| 226 | (defun ADF0
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| 227 | (- (ARG 1) (ARG 0)))
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| 228 | (defun ADF1
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| 229 | (+ (CALL ADF0 (ARG 1) (ARG 0))
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| 230 | (CALL ADF0 (ARG 0) (ARG 1)))))", 1, 0.0);
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| 231 | }
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| 232 |
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| 233 | private void Evaluate(SimpleArithmeticExpressionInterpreter interpreter, Dataset ds, string expr, int index, double expected) {
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| 234 | var importer = new SymbolicExpressionImporter();
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| 235 | SymbolicExpressionTree tree = importer.Import(expr);
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| 236 |
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| 237 | double actual = interpreter.GetSymbolicExpressionTreeValues(tree, ds, Enumerable.Range(index, 1)).First();
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| 238 |
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| 239 | Assert.AreEqual(expected, actual, 1.0E-12, expr);
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| 240 | }
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| 241 | }
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| 242 | }
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