[3297] | 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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[3307] | 10 | using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding.GeneralSymbols;
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[3297] | 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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[3307] | 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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[3297] | 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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[3307] | 67 | : base(0, 3, 0, 3) {
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[3297] | 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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[3307] | 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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[3297] | 82 | var functionSymbols = new List<Symbol>() { add, sub, mul, div };
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[3307] | 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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[3297] | 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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