Changeset 14228 for trunk/sources/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Various/FriedmanOne.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/FriedmanOne.cs (modified) (1 diff)

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

@@ -42 +42 @@
     protected override int TestPartitionStart { get { return 5000; } }
     protected override int TestPartitionEnd { get { return 10000; } }
+    public int Seed { get; }
 
-    protected static FastRandom rand = new FastRandom();
+    public FriedmanOne() : this((int)DateTime.Now.Ticks) { }
+
+    public FriedmanOne(int seed) : base() {
+      Seed = seed;
+    }
 
     protected override List<List<double>> GenerateValues() {
       List<List<double>> data = new List<List<double>>();
+      var rand = new MersenneTwister((uint)Seed);
       for (int i = 0; i < AllowedInputVariables.Count(); i++) {
-        data.Add(ValueGenerator.GenerateUniformDistributedValues(10000, 0, 1).ToList());
+        data.Add(ValueGenerator.GenerateUniformDistributedValues(rand.Next(), 10000, 0, 1).ToList());
       }