Changeset 17093

Timestamp:

07/05/19 16:52:06 (5 years ago)

Author:

gkronber

Message:

#3014: added a copy of the target variable with simulated noise to the AircraftMaximumLift problem instance

File:

• trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Physics/AircraftMaximumLift.cs (modified) (5 diffs)

trunk/HeuristicLab.Problems.Instances.DataAnalysis/3.3/Regression/Physics/AircraftMaximumLift.cs

@@ -23 +23 @@
 using System.Collections.Generic;
 using System.Linq;
+using HeuristicLab.Common;
 using HeuristicLab.Random;
 
@@ -54 +55 @@
 
     protected override string TargetVariable { get { return "f(X)"; } }
-    protected override string[] VariableNames { get { return new string[] { "x1", "x2", "x3", "x4", "x5", "x6", "x7", "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", "x16", "x17", "x18", "f(X)" }; } }
-    protected override string[] AllowedInputVariables { get { return VariableNames.Except(new string[] { TargetVariable }).ToArray(); } }
+    protected override string[] VariableNames { get { return new string[] { "x1", "x2", "x3", "x4", "x5", "x6", "x7", "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", "x16", "x17", "x18", "f(X)", "f(X)_noise" }; } }
+    protected override string[] AllowedInputVariables { get { return VariableNames.Except(new string[] { "f(X)", "f(X)_noise" }).ToArray(); } }
     protected override int TrainingPartitionStart { get { return 0; } }
     protected override int TrainingPartitionEnd { get { return 100; } }
@@ -106 +107 @@
 
       List<double> fx = new List<double>();
+      List<double> fx_noise = new List<double>();
       data.Add(x1);
       data.Add(x2);
@@ -125 +127 @@
       data.Add(x18);
       data.Add(fx);
+      data.Add(fx_noise);
 
       for (int i = 0; i < x1.Count; i++) {
@@ -139 +142 @@
       }
 
+      var sigma_noise = 0.05 * fx.StandardDeviationPop();
+      fx_noise.AddRange(fx.Select(fxi => fxi + NormalDistributedRandom.NextDouble(rand, 0, sigma_noise)));
+
       return data;
     }