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source: branches/3075_aifeynman_instances/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Feynman/Feynman94.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: 1.8 KB
Line 
1using System;
2using System.Collections.Generic;
3using System.Linq;
4using HeuristicLab.Random;
5
6namespace HeuristicLab.Problems.Instances.DataAnalysis {
7  public class Feynman94 : FeynmanDescriptor {
8    public override string Name { get { return "Feynman III.14.14 I_0*(exp(q*Volt/(kb*T))-1)"; } }
9
10    protected override string TargetVariable { get { return "I"; } }
11    protected override string[] VariableNames { get { return new[] {"I_0", "q", "Volt", "kb", "T", "I"}; } }
12    protected override string[] AllowedInputVariables { get { return new[] {"I_0", "q", "Volt", "kb", "T"}; } }
13
14    public int Seed { get; private set; }
15
16    public Feynman94() : this((int) DateTime.Now.Ticks) { }
17
18    public Feynman94(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 I_0  = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 5).ToList();
27      var q    = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
28      var Volt = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
29      var kb   = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
30      var T    = ValueGenerator.GenerateUniformDistributedValues(rand.Next(), TestPartitionEnd, 1, 2).ToList();
31
32      var I = new List<double>();
33
34      data.Add(I_0);
35      data.Add(q);
36      data.Add(Volt);
37      data.Add(kb);
38      data.Add(T);
39      data.Add(I);
40
41      for (var i = 0; i < I_0.Count; i++) {
42        var res = I_0[i] * (Math.Exp(q[i] * Volt[i] / (kb[i] * T[i])) - 1);
43        I.Add(res);
44      }
45
46      return data;
47    }
48  }
49}
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