Changeset 5530

Timestamp:

02/21/11 17:52:58 (14 years ago)

Author:

gkronber

Message:

#1418 added static method to calculate mean and variance of a double enumerable.

Location:

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4

Files:

• Interfaces/Regression/IRegressionSolution.cs (modified) (1 diff)
• OnlineEvaluators/OnlineMeanAndVarianceCalculator.cs (modified) (2 diffs)

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/Interfaces/Regression/IRegressionSolution.cs

@@ -22 +22 @@
 using System.Collections.Generic;
 namespace HeuristicLab.Problems.DataAnalysis {
-  public interface IRegressionnSolution : IDataAnalysisSolution {
+  public interface IRegressionSolution : IDataAnalysisSolution {
     new IRegressionModel Model { get; }
     new IRegressionProblemData ProblemData { get; }

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/OnlineEvaluators/OnlineMeanAndVarianceCalculator.cs

@@ -21 +21 @@
 
 using System;
+using System.Collections.Generic;
 
 namespace HeuristicLab.Problems.DataAnalysis {
@@ -77 +78 @@
       }
     }
+
+    public static void Calculate(IEnumerable<double> x, out double mean, out double variance) {
+      OnlineMeanAndVarianceCalculator meanAndVarianceCalculator = new OnlineMeanAndVarianceCalculator();
+      foreach (double xi in x) {
+        meanAndVarianceCalculator.Add(xi);
+      }
+      mean = meanAndVarianceCalculator.Mean;
+      variance = meanAndVarianceCalculator.Variance;
+    }
   }
 }