Changeset 14228 for trunk/sources/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Various/VariousInstanceProvider.cs

Timestamp:

08/02/16 18:09:47 (8 years ago)

Author:

gkronber

Message:

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

File:

• trunk/sources/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Various/VariousInstanceProvider.cs (modified) (2 diffs)

trunk/sources/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Various/VariousInstanceProvider.cs

@@ -22 +22 @@
 using System;
 using System.Collections.Generic;
+using HeuristicLab.Random;
 
 namespace HeuristicLab.Problems.Instances.DataAnalysis {
@@ -37 +38 @@
       get { return ""; }
     }
+    public int Seed { get; }
 
+    public VariousInstanceProvider() : this((int)DateTime.Now.Ticks) { }
+
+    public VariousInstanceProvider(int seed) : base() {
+      Seed = seed;
+    }
     public override IEnumerable<IDataDescriptor> GetDataDescriptors() {
       List<IDataDescriptor> descriptorList = new List<IDataDescriptor>();
-      descriptorList.Add(new BreimanOne());
-      descriptorList.Add(new FriedmanOne());
-      descriptorList.Add(new FriedmanTwo());
-      descriptorList.Add(new PolyTen());
-      descriptorList.Add(new SpatialCoevolution());
+      var rand = new MersenneTwister((uint)Seed);
+      descriptorList.Add(new BreimanOne(rand.Next()));
+      descriptorList.Add(new FriedmanOne(rand.Next()));
+      descriptorList.Add(new FriedmanTwo(rand.Next()));
+      descriptorList.Add(new PolyTen(rand.Next()));
+      descriptorList.Add(new SpatialCoevolution(rand.Next()));
       return descriptorList;
     }