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source: trunk/sources/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Nguyen/NguyenInstanceProvider.cs @ 14228

Last change on this file since 14228 was 14228, checked in by gkronber, 8 years ago

#2371: added constructors to allow specification of random seeds for randomly generated regression problem instances (primarily for unit tests)

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using HeuristicLab.Random;
25
26namespace HeuristicLab.Problems.Instances.DataAnalysis {
27  public class NguyenInstanceProvider : ArtificialRegressionInstanceProvider {
28    public override string Name {
29      get { return "Nguyen Benchmark Problems"; }
30    }
31    public override string Description {
32      get { return ""; }
33    }
34    public override Uri WebLink {
35      get { return new Uri("http://www.gpbenchmarks.org/wiki/index.php?title=Problem_Classification#Nguyen_et_al"); }
36    }
37    public override string ReferencePublication {
38      get { return "McDermott et al., 2012 \"Genetic Programming Needs Better Benchmarks\", in Proc. of GECCO 2012."; }
39    }
40    public int Seed { get; }
41
42    public NguyenInstanceProvider() : this((int)System.DateTime.Now.Ticks) { }
43    public NguyenInstanceProvider(int seed) : base() {
44      Seed = seed;
45    }
46
47    public override IEnumerable<IDataDescriptor> GetDataDescriptors() {
48      List<IDataDescriptor> descriptorList = new List<IDataDescriptor>();
49      var rand = new MersenneTwister((uint)Seed);
50      descriptorList.Add(new NguyenFunctionOne(rand.Next()));
51      descriptorList.Add(new NguyenFunctionTwo(rand.Next()));
52      descriptorList.Add(new NguyenFunctionThree(rand.Next()));
53      descriptorList.Add(new NguyenFunctionFour(rand.Next()));
54      descriptorList.Add(new NguyenFunctionFive(rand.Next()));
55      descriptorList.Add(new NguyenFunctionSix(rand.Next()));
56      descriptorList.Add(new NguyenFunctionSeven(rand.Next()));
57      descriptorList.Add(new NguyenFunctionEight(rand.Next()));
58      descriptorList.Add(new NguyenFunctionNine(rand.Next()));
59      descriptorList.Add(new NguyenFunctionTen(rand.Next()));
60      descriptorList.Add(new NguyenFunctionEleven(rand.Next()));
61      descriptorList.Add(new NguyenFunctionTwelve(rand.Next()));
62      return descriptorList;
63    }
64  }
65}
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