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source: branches/3075_aifeynman_instances/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Feynman/Feynman89.cs @ 17641

Last change on this file since 17641 was 17641, checked in by chaider, 4 years ago

#3075 Added part III of feynman equations

File size: 1.5 KB
Line 
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using HeuristicLab.Random;
5
6namespace HeuristicLab.Problems.Instances.DataAnalysis {
7  public class Feynman89 : FeynmanDescriptor {
8    public override string Name { get { return "Feynman III.8.54 sin(E_n*t/(h/(2*pi)))**2"; } }
9
10    protected override string TargetVariable { get { return "prob"; } }
11    protected override string[] VariableNames { get { return new[] {"E_n", "t", "h", "prob"}; } }
12    protected override string[] AllowedInputVariables { get { return new[] {"E_n", "t", "h"}; } }
13
14    public int Seed { get; private set; }
15
16    public Feynman89() : this((int) DateTime.Now.Ticks) { }
17
18    public Feynman89(int seed) {
19      Seed = seed;
20    }
21
22    protected override List<List<double>> GenerateValues() {
23      var rand = new MersenneTwister((uint) Seed);
24
25      var data = new List<List<double>>();
26      var E_n  = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
27      var t    = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
28      var h    = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 4).ToList();
29
30      var prob = new List<double>();
31
32      data.Add(E_n);
33      data.Add(t);
34      data.Add(h);
35      data.Add(prob);
36
37      for (var i = 0; i < E_n.Count; i++) {
38        var res = Math.Pow(Math.Sin(E_n[i] * t[i] / (h[i] / (2 * Math.PI))), 2);
39        prob.Add(res);
40      }
41
42      return data;
43    }
44  }
45}
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