1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.Linq;
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4 | using HeuristicLab.Random;
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5 |
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6 | namespace HeuristicLab.Problems.Instances.DataAnalysis {
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7 | public class Feynman90 : FeynmanDescriptor {
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8 | private readonly int testSamples;
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9 | private readonly int trainingSamples;
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10 |
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11 | public Feynman90() : this((int) DateTime.Now.Ticks, 10000, 10000) { }
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12 |
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13 | public Feynman90(int seed) {
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14 | Seed = seed;
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15 | trainingSamples = 10000;
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16 | testSamples = 10000;
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17 | }
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18 |
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19 | public Feynman90(int seed, int trainingSamples, int testSamples) {
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20 | Seed = seed;
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21 | this.trainingSamples = trainingSamples;
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22 | this.testSamples = testSamples;
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23 | }
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24 |
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25 | public override string Name {
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26 | get {
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27 | return string.Format(
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28 | "Feynman III.9.52 (p_d*Ef*t/(h/(2*pi)))*sin((omega-omega_0)*t/2)**2/((omega-omega_0)*t/2)**2 | {0} samples",
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29 | trainingSamples);
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30 | }
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31 | }
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32 |
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33 | protected override string TargetVariable { get { return "prob"; } }
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34 |
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35 | protected override string[] VariableNames {
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36 | get { return new[] {"p_d", "Ef", "t", "h", "omega", "omega_0", "prob"}; }
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37 | }
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38 |
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39 | protected override string[] AllowedInputVariables {
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40 | get { return new[] {"p_d", "Ef", "t", "h", "omega", "omega_0"}; }
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41 | }
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42 |
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43 | public int Seed { get; private set; }
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44 |
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45 | protected override int TrainingPartitionStart { get { return 0; } }
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46 | protected override int TrainingPartitionEnd { get { return trainingSamples; } }
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47 | protected override int TestPartitionStart { get { return trainingSamples; } }
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48 | protected override int TestPartitionEnd { get { return trainingSamples + testSamples; } }
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49 |
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50 | protected override List<List<double>> GenerateValues() {
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51 | var rand = new MersenneTwister((uint) Seed);
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52 |
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53 | var data = new List<List<double>>();
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54 | var p_d = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 3).ToList();
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55 | var Ef = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 3).ToList();
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56 | var t = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 3).ToList();
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57 | var h = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 3).ToList();
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58 | var omega = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 5).ToList();
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59 | var omega_0 = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 5).ToList();
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60 |
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61 | var prob = new List<double>();
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62 |
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63 | data.Add(p_d);
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64 | data.Add(Ef);
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65 | data.Add(t);
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66 | data.Add(h);
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67 | data.Add(omega);
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68 | data.Add(omega_0);
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69 | data.Add(prob);
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70 |
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71 | for (var i = 0; i < p_d.Count; i++) {
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72 | var res = p_d[i] * Ef[i] * t[i] / (h[i]) *
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73 | Math.Pow(Math.Sin((omega[i] - omega_0[i]) * t[i] / 2), 2) /
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74 | Math.Pow((omega[i] - omega_0[i]) * t[i] / 2, 2);
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75 | prob.Add(res);
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76 | }
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77 |
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78 | return data;
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79 | }
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80 | }
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81 | } |
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