Changeset 9330

Timestamp:

03/21/13 16:47:39 (12 years ago)

Author:

ascheibe

Message:

#1886 added a view for sample size determination

Location:

branches/HeuristicLab.Analysis.AlgorithmBehavior/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views/3.3

Files:

• HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views-3.3.csproj (modified) (1 diff)
• KruskalWallis.cs (modified) (4 diffs)
• SampleSizeChecker.cs (added)
• SampleSizeChecker.designer.cs (added)
• SampleSizeDetermination.cs (modified) (1 diff)

branches/HeuristicLab.Analysis.AlgorithmBehavior/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views/3.3/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views-3.3.csproj

@@ -119 +119 @@
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="SampleSizeChecker.cs">
+      <SubType>UserControl</SubType>
+    </Compile>
+    <Compile Include="SampleSizeChecker.designer.cs">
+      <DependentUpon>SampleSizeChecker.cs</DependentUpon>
+    </Compile>
     <Compile Include="SampleSizeDetermination.cs" />
     <Compile Include="StatisticalTestingView.cs">

branches/HeuristicLab.Analysis.AlgorithmBehavior/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views/3.3/KruskalWallis.cs

@@ -24 +24 @@
 
 namespace HeuristicLab.Analysis.AlgorithmBehavior.Analyzers {
-  // Kruskal Wallis test based on R's kruskal.test() 
   public class KruskalWallis {
+    /// <summary>
+    /// Performs the Kruskal-Wallis test and returns the p-Value. 
+    /// (source based on R's kruskal.test())
+    /// </summary>
     public static double Test(double[][] data) {
       double[] g;
@@ -78 +81 @@
     }
 
-    public static double[] FlattenArray(double[][] x, out double[] indizes) {
+    private static double[] FlattenArray(double[][] x, out double[] indizes) {
       int compLenght = 0;
       for (int i = 0; i < x.Length; i++) {
@@ -100 +103 @@
     }
 
-    public static double[][] CountDuplicates(double[] x) {
+    private static double[][] CountDuplicates(double[] x) {
       List<double> number = new List<double>();
       List<double> cnt = new List<double>();
@@ -129 +132 @@
     }
 
-    public static int[] Rank(double[] x) {
+    private static int[] Rank(double[] x) {
       double[] keys = new double[x.Length];
       int[] items = new int[x.Length];

branches/HeuristicLab.Analysis.AlgorithmBehavior/HeuristicLab.Analysis.AlgorithmBehavior.Analyzers.Views/3.3/SampleSizeDetermination.cs

@@ -38 +38 @@
       double result = 0;
 
-      double var = samples.Variance();
-      double n = alglib.normaldistribution((conf + 1) / 2);
+      double var = samples.StandardDeviation();
+      double n = alglib.invnormaldistribution((conf + 1) / 2);
       result = Math.Pow(n, 2) * Math.Pow(var, 2) / Math.Pow(e, 2);
-      return (int)Math.Ceiling(result);
+      result = Math.Ceiling(result);
+      if (result > int.MaxValue)
+        return int.MaxValue;
+      else
+        return (int)result;
     }