Changeset 18032 for trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Friedman/FriedmanRandomFunction.cs

Timestamp:

07/27/21 13:30:00 (3 years ago)

Author:

chaider

Message:

#3075 noise generation method to ValueGenerator; use same method for generating noise in friedman and feynman instances

File:

• trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Friedman/FriedmanRandomFunction.cs (modified) (1 diff)

trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Friedman/FriedmanRandomFunction.cs

@@ -86 +86 @@
       var y = GenerateRandomFunction(random, data);
 
-      var targetSigma = y.StandardDeviation();
-      var noisePrng = new NormalDistributedRandom(random, 0, targetSigma * Math.Sqrt(noiseRatio / (1.0 - noiseRatio)));
+      //var targetSigma = y.StandardDeviation();
+      //var noisePrng = new NormalDistributedRandom(random, 0, targetSigma * Math.Sqrt(noiseRatio / (1.0 - noiseRatio)));
 
-      data.Add(y.Select(t => t + noisePrng.NextDouble()).ToList());
+      //data.Add(y.Select(t => t + noisePrng.NextDouble()).ToList());
+
+      data.Add(ValueGenerator.GenerateNoise(y, random, noiseRatio));
 
       return data;