1 | using System;
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2 | using System.Text;
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3 | using System.Collections.Generic;
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4 | using System.Linq;
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5 | using Microsoft.VisualStudio.TestTools.UnitTesting;
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6 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
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7 | using HeuristicLab.Random;
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8 | using System.Diagnostics;
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9 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.ArchitectureAlteringOperators;
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10 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.GeneralSymbols;
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11 |
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12 | namespace HeuristicLab.Encodings.SymbolicExpressionTreeEncoding_3._3.Tests {
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13 | [TestClass]
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14 | public class SubroutineCreaterTest {
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15 | public SubroutineCreaterTest() {
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16 | }
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17 |
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18 | private TestContext testContextInstance;
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19 |
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20 | /// <summary>
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21 | ///Gets or sets the test context which provides
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22 | ///information about and functionality for the current test run.
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23 | ///</summary>
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24 | public TestContext TestContext {
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25 | get {
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26 | return testContextInstance;
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27 | }
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28 | set {
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29 | testContextInstance = value;
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30 | }
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31 | }
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32 |
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33 | [ClassInitialize()]
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34 | public static void SubroutineCreaterTestInitialize(TestContext testContext) {
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35 | var randomTrees = new List<SymbolicExpressionTree>();
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36 | subroutineTrees = new List<SymbolicExpressionTree>();
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37 | int populationSize = 1000;
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38 | var grammar = new TestGrammar();
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39 | var random = new MersenneTwister();
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40 | for (int i = 0; i < populationSize; i++) {
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41 | var randTree = ProbabilisticTreeCreator.Create(random, grammar, 100, 10);
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42 | Assert.IsTrue(grammar.IsValidExpression(randTree));
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43 | randomTrees.Add(randTree);
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44 | }
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45 | var newPopulation = new List<SymbolicExpressionTree>();
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46 | for (int i = 0; i < populationSize; i++) {
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47 | var par0 = (SymbolicExpressionTree)randomTrees[random.Next(populationSize)].Clone();
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48 | bool success = SubroutineCreater.CreateSubroutine(random, par0, grammar, 100, 10, 3, 3);
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49 | Assert.IsTrue(grammar.IsValidExpression(par0));
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50 | subroutineTrees.Add(par0);
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51 | }
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52 | }
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53 |
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54 |
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55 |
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56 | private static List<SymbolicExpressionTree> subroutineTrees;
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57 | private static int failedEvents;
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58 |
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59 | private class Addition : Symbol { }
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60 | private class Subtraction : Symbol { }
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61 | private class Multiplication : Symbol { }
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62 | private class Division : Symbol { }
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63 | private class Terminal : Symbol { }
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64 |
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65 | private class TestGrammar : DefaultSymbolicExpressionGrammar {
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66 | public TestGrammar()
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67 | : base(0, 3, 0, 3) {
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68 | Initialize();
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69 | }
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70 |
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71 | private void Initialize() {
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72 | var add = new Addition();
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73 | var sub = new Subtraction();
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74 | var mul = new Multiplication();
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75 | var div = new Division();
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76 | var terminal = new Terminal();
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77 |
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78 | var defun = new Defun();
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79 | var invoke = new InvokeFunction();
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80 |
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81 | var allSymbols = new List<Symbol>() { add, sub, mul, div, terminal, invoke };
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82 | var functionSymbols = new List<Symbol>() { add, sub, mul, div };
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83 | foreach (var symb in allSymbols) {
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84 | AddAllowedSymbols(StartSymbol, 0, symb);
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85 | AddAllowedSymbols(defun, 0, symb);
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86 | }
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87 | SetMinSubTreeCount(invoke, 0);
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88 | SetMaxSubTreeCount(invoke, 3);
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89 | for (int i = 0; i < 3; i++) {
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90 | allSymbols.ForEach(s => AddAllowedSymbols(invoke, i, s));
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91 | }
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92 | SetMinSubTreeCount(terminal, 0);
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93 | SetMaxSubTreeCount(terminal, 0);
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94 | int maxSubTrees = 3;
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95 | foreach (var functionSymbol in functionSymbols) {
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96 | SetMinSubTreeCount(functionSymbol, 1);
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97 | SetMaxSubTreeCount(functionSymbol, maxSubTrees);
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98 | foreach (var childSymbol in allSymbols) {
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99 | for (int argumentIndex = 0; argumentIndex < maxSubTrees; argumentIndex++) {
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100 | AddAllowedSymbols(functionSymbol, argumentIndex, childSymbol);
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101 | }
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102 | }
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103 | }
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104 | }
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105 | }
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106 |
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107 | [TestMethod()]
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108 | public void SubroutineCreaterSizeDistributionTest() {
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109 | int[] histogram = new int[105 / 5];
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110 | for (int i = 0; i < subroutineTrees.Count; i++) {
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111 | histogram[subroutineTrees[i].Size / 5]++;
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112 | }
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113 | StringBuilder strBuilder = new StringBuilder();
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114 | for (int i = 0; i < histogram.Length; i++) {
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115 | strBuilder.Append(Environment.NewLine);
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116 | strBuilder.Append("< "); strBuilder.Append((i + 1) * 5);
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117 | strBuilder.Append(": "); strBuilder.AppendFormat("{0:#0.00%}", histogram[i] / (double)subroutineTrees.Count);
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118 | }
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119 | Assert.Inconclusive("Size distribution of SubroutineCreater: " + strBuilder);
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120 | }
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121 |
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122 | [TestMethod()]
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123 | public void SubroutineCreaterFunctionDistributionTest() {
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124 | Dictionary<Symbol, int> occurances = new Dictionary<Symbol, int>();
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125 | double n = 0.0;
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126 | for (int i = 0; i < subroutineTrees.Count; i++) {
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127 | foreach (var node in subroutineTrees[i].IterateNodesPrefix()) {
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128 | if (node.SubTrees.Count > 0) {
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129 | if (!occurances.ContainsKey(node.Symbol))
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130 | occurances[node.Symbol] = 0;
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131 | occurances[node.Symbol]++;
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132 | n++;
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133 | }
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134 | }
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135 | }
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136 | StringBuilder strBuilder = new StringBuilder();
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137 | foreach (var function in occurances.Keys) {
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138 | strBuilder.Append(Environment.NewLine);
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139 | strBuilder.Append(function.Name); strBuilder.Append(": ");
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140 | strBuilder.AppendFormat("{0:#0.00%}", occurances[function] / n);
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141 | }
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142 | Assert.Inconclusive("Function distribution of SubroutineCreater: " + strBuilder);
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143 | }
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144 |
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145 | [TestMethod()]
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146 | public void SubroutineCreaterNumberOfSubTreesDistributionTest() {
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147 | Dictionary<int, int> occurances = new Dictionary<int, int>();
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148 | double n = 0.0;
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149 | for (int i = 0; i < subroutineTrees.Count; i++) {
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150 | foreach (var node in subroutineTrees[i].IterateNodesPrefix()) {
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151 | if (!occurances.ContainsKey(node.SubTrees.Count))
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152 | occurances[node.SubTrees.Count] = 0;
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153 | occurances[node.SubTrees.Count]++;
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154 | n++;
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155 | }
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156 | }
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157 | StringBuilder strBuilder = new StringBuilder();
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158 | foreach (var arity in occurances.Keys) {
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159 | strBuilder.Append(Environment.NewLine);
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160 | strBuilder.Append(arity); strBuilder.Append(": ");
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161 | strBuilder.AppendFormat("{0:#0.00%}", occurances[arity] / n);
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162 | }
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163 | Assert.Inconclusive("Distribution of function arities of SubroutineCreater: " + strBuilder);
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164 | }
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165 |
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166 |
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167 | [TestMethod()]
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168 | public void SubroutineCreaterTerminalDistributionTest() {
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169 | Dictionary<Symbol, int> occurances = new Dictionary<Symbol, int>();
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170 | double n = 0.0;
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171 | for (int i = 0; i < subroutineTrees.Count; i++) {
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172 | foreach (var node in subroutineTrees[i].IterateNodesPrefix()) {
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173 | if (node.SubTrees.Count == 0) {
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174 | if (!occurances.ContainsKey(node.Symbol))
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175 | occurances[node.Symbol] = 0;
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176 | occurances[node.Symbol]++;
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177 | n++;
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178 | }
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179 | }
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180 | }
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181 | StringBuilder strBuilder = new StringBuilder();
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182 | foreach (var function in occurances.Keys) {
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183 | strBuilder.Append(Environment.NewLine);
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184 | strBuilder.Append(function.Name); strBuilder.Append(": ");
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185 | strBuilder.AppendFormat("{0:#0.00%}", occurances[function] / n);
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186 | }
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187 | Assert.Inconclusive("Terminal distribution of SubroutineCreater: " + strBuilder);
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188 | }
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189 | }
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190 | }
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