[7849] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[15583] | 3 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[7849] | 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.Linq;
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[12292] | 25 | using HeuristicLab.Common;
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[14228] | 26 | using HeuristicLab.Random;
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[7849] | 27 |
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| 28 | namespace HeuristicLab.Problems.Instances.DataAnalysis {
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| 29 | public class RationalPolynomialThreeDimensional : ArtificialRegressionDataDescriptor {
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| 30 |
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[8240] | 31 | public override string Name { get { return "Vladislavleva-5 F5(X1, X2, X3) = 30 * ((X1 - 1) * (X3 -1)) / (X2² * (X1 - 10))"; } }
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[7849] | 32 | public override string Description {
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| 33 | get {
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| 34 | return "Paper: Order of Nonlinearity as a Complexity Measure for Models Generated by Symbolic Regression via Pareto Genetic Programming " + Environment.NewLine
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| 35 | + "Authors: Ekaterina J. Vladislavleva, Member, IEEE, Guido F. Smits, Member, IEEE, and Dick den Hertog" + Environment.NewLine
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[8240] | 36 | + "Function: F5(X1, X2, X3) = 30 * ((X1 - 1) * (X3 -1)) / (X2² * (X1 - 10))" + Environment.NewLine
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[7849] | 37 | + "Training Data: 300 points X1, X3 = Rand(0.05, 2), X2 = Rand(1, 2)" + Environment.NewLine
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[9008] | 38 | + "Test Data: (14*12*14) points X1, X3 = (-0.05:0.15:2.05), X2 = (0.95:0.1:2.05)" + Environment.NewLine
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[8241] | 39 | + "Function Set: +, -, *, /, square, x^eps, x + eps, x * eps";
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[7849] | 40 | }
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| 41 | }
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| 42 | protected override string TargetVariable { get { return "Y"; } }
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[8825] | 43 | protected override string[] VariableNames { get { return new string[] { "X1", "X2", "X3", "Y" }; } }
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[7849] | 44 | protected override string[] AllowedInputVariables { get { return new string[] { "X1", "X2", "X3" }; } }
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| 45 | protected override int TrainingPartitionStart { get { return 0; } }
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| 46 | protected override int TrainingPartitionEnd { get { return 300; } }
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[8999] | 47 | protected override int TestPartitionStart { get { return 300; } }
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[12292] | 48 | protected override int TestPartitionEnd { get { return 300 + (15 * 12 * 15); } }
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[14229] | 49 | public int Seed { get; private set; }
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[7849] | 50 |
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[14228] | 51 | public RationalPolynomialThreeDimensional() : this((int)DateTime.Now.Ticks) { }
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| 52 |
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| 53 | public RationalPolynomialThreeDimensional(int seed) : base() {
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| 54 | Seed = seed;
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| 55 | }
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[7849] | 56 | protected override List<List<double>> GenerateValues() {
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| 57 | List<List<double>> data = new List<List<double>>();
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| 58 |
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[8999] | 59 | int n = 300;
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[14228] | 60 | var rand = new MersenneTwister((uint)Seed);
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| 61 | data.Add(ValueGenerator.GenerateUniformDistributedValues(rand.Next(), n, 0.05, 2).ToList());
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| 62 | data.Add(ValueGenerator.GenerateUniformDistributedValues(rand.Next(), n, 1, 2).ToList());
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| 63 | data.Add(ValueGenerator.GenerateUniformDistributedValues(rand.Next(), n, 0.05, 2).ToList());
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[7849] | 64 |
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| 65 | List<List<double>> testData = new List<List<double>>() {
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[12292] | 66 | SequenceGenerator.GenerateSteps(-0.05m, 2.05m, 0.15m).Select(v => (double)v).ToList(),
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| 67 | SequenceGenerator.GenerateSteps( 0.95m, 2.05m, 0.1m).Select(v => (double)v).ToList(),
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| 68 | SequenceGenerator.GenerateSteps(-0.05m, 2.05m, 0.15m).Select(v => (double)v).ToList()
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[7849] | 69 | };
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| 70 |
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| 71 | var combinations = ValueGenerator.GenerateAllCombinationsOfValuesInLists(testData).ToList<IEnumerable<double>>();
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| 72 |
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| 73 | for (int i = 0; i < AllowedInputVariables.Count(); i++) {
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| 74 | data[i].AddRange(combinations[i]);
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| 75 | }
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| 76 |
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| 77 | double x1, x2, x3;
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| 78 | List<double> results = new List<double>();
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| 79 | for (int i = 0; i < data[0].Count; i++) {
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| 80 | x1 = data[0][i];
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| 81 | x2 = data[1][i];
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| 82 | x3 = data[2][i];
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| 83 | results.Add(30 * ((x1 - 1) * (x3 - 1)) / (Math.Pow(x2, 2) * (x1 - 10)));
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| 84 | }
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| 85 | data.Add(results);
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| 86 |
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| 87 | return data;
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| 88 | }
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| 89 | }
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| 90 | }
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