Changeset 17448 for branches/3040_VectorBasedGP/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/VectorData/AzzaliBenchmark2.cs

Timestamp:

02/25/20 07:41:01 (5 years ago)

Author:

pfleck

Message:

#3040 Replaced own Vector with MathNet.Numerics Vector.

File:

• branches/3040_VectorBasedGP/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/VectorData/AzzaliBenchmark2.cs (modified) (3 diffs)

branches/3040_VectorBasedGP/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/VectorData/AzzaliBenchmark2.cs

@@ -1 @@
-using System;
+#region License Information
+/* HeuristicLab
+ * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * HeuristicLab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
 using System.Collections;
 using System.Collections.Generic;
@@ -7 +28 @@
 using HeuristicLab.Problems.DataAnalysis;
 using HeuristicLab.Random;
+using MathNet.Numerics.Statistics;
+
+using DoubleVector = MathNet.Numerics.LinearAlgebra.Vector<double>;
 
 namespace HeuristicLab.Problems.Instances.DataAnalysis {
   public class AzzaliBenchmark2 : ArtificialRegressionDataDescriptor {
-    public override string Name { get { return "Azzali Benchmark2 B2 = ((X3 + X1) / mean(X4)) * X2"; } }
+    public override string Name { get { return "Azzali Benchmark2 B2 = ((X3 + X1) / CumMean(X4)) * X2"; } }
     public override string Description { get { return "I. Azzali, L. Vanneschi, S. Silva, I. Bakurov, and M. Giacobini, “A Vectorial Approach to Genetic Programming,” EuroGP, pp. 213–227, 2019."; } }
 
@@ -47 +71 @@
         var x4 = rand.NextDoubleVector(-5, +5, 10);
 
-        var b2 = ((x3 + x1) / x4.CumulativeMean()) * x2;
+        var cumMean = x4.MapIndexed((j, v) => x4.SubVector(0, j + 1).Mean());
+        var b2 = ((x3 + x1) / cumMean) * x2;
 
         x1Column.Add(x1);