Free cookie consent management tool by TermsFeed Policy Generator

source: branches/2521_ProblemRefactoring/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Feynman/Feynman53.cs @ 18086

Last change on this file since 18086 was 18086, checked in by mkommend, 2 years ago

#2521: Merged trunk changes into branch.

File size: 2.6 KB
Line 
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using HeuristicLab.Common;
5using HeuristicLab.Random;
6
7namespace HeuristicLab.Problems.Instances.DataAnalysis {
8  public class Feynman53 : FeynmanDescriptor {
9    private readonly int testSamples;
10    private readonly int trainingSamples;
11
12    public Feynman53() : this((int) DateTime.Now.Ticks, 10000, 10000, null) { }
13
14    public Feynman53(int seed) {
15      Seed            = seed;
16      trainingSamples = 10000;
17      testSamples     = 10000;
18      noiseRatio      = null;
19    }
20
21    public Feynman53(int seed, int trainingSamples, int testSamples, double? noiseRatio) {
22      Seed                 = seed;
23      this.trainingSamples = trainingSamples;
24      this.testSamples     = testSamples;
25      this.noiseRatio      = noiseRatio;
26    }
27
28    public override string Name {
29      get {
30        return string.Format("II.3.24 Pwr/(4*pi*r**2) | {0}",
31          noiseRatio == null ? "no noise" : string.Format(System.Globalization.CultureInfo.InvariantCulture, "noise={0:g}",noiseRatio));
32      }
33    }
34
35    protected override string TargetVariable { get { return noiseRatio == null ? "flux" : "flux_noise"; } }
36
37    protected override string[] VariableNames {
38      get { return noiseRatio == null ? new[] { "Pwr", "r", "flux" } : new[] { "Pwr", "r", "flux", "flux_noise" }; }
39    }
40
41    protected override string[] AllowedInputVariables { get { return new[] {"Pwr", "r"}; } }
42
43    public int Seed { get; private set; }
44
45    protected override int TrainingPartitionStart { get { return 0; } }
46    protected override int TrainingPartitionEnd { get { return trainingSamples; } }
47    protected override int TestPartitionStart { get { return trainingSamples; } }
48    protected override int TestPartitionEnd { get { return trainingSamples + testSamples; } }
49
50    protected override List<List<double>> GenerateValues() {
51      var rand = new MersenneTwister((uint) Seed);
52
53      var data = new List<List<double>>();
54      var Pwr  = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 5).ToList();
55      var r    = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 5).ToList();
56
57      var flux = new List<double>();
58
59      data.Add(Pwr);
60      data.Add(r);
61      data.Add(flux);
62
63      for (var i = 0; i < Pwr.Count; i++) {
64        var res = Pwr[i] / (4 * Math.PI * Math.Pow(r[i], 2));
65        flux.Add(res);
66      }
67
68      var targetNoise = ValueGenerator.GenerateNoise(flux, rand, noiseRatio);
69      if (targetNoise != null) data.Add(targetNoise);
70
71      return data;
72    }
73  }
74}
Note: See TracBrowser for help on using the repository browser.