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Changeset 7704

Timestamp:

04/04/12 12:52:53 (12 years ago)

Author:

epitzer

Message:

#1813 add generalized exponential distribution with additional base parameter
adapt documentation of previous exponential distribution operator

Location:

trunk/sources/HeuristicLab.Optimization.Operators/3.3

Files:

-                      r7259
+                      r7704
   /// Modifies the value by exponential fall (steep fall initially, slow fall to the end) or rise (slow rise initially, fast rise to the end).
   /// </summary>
+  [Item("ExponentialDiscreteDoubleValueModifier", "Modifies the value by exponential fall (steep fall initially, slow fall to the end) or rise (slow rise initially, fast rise to the end).")]
+  [Item("ExponentialDiscreteDoubleValueModifier",
+@"Modifies the value by exponential fall (steep fall initially, slow fall to the end) or rise (slow rise initially, fast rise to the end).
+This uses a standard exponential distribution and yields a base which is implicitly derived by start and end indices and values.")]
   [StorableClass]
   public class ExponentialDiscreteDoubleValueModifier : DiscreteDoubleValueModifier {
 …
     /// <returns>The new value.</returns>
     protected override double Modify(double value, double startValue, double endValue, int index, int startIndex, int endIndex) {
       if (endValue <= 0 || startValue <= 0) throw new ArgumentException("ExponentialDiscreteDoubleValueModifier: startValue and endValue must be greater than 0.");
+      if (endValue <= 0 || startValue <= 0) throw new ArgumentException("startValue and endValue must be greater than 0.");
       double b = Math.Pow(endValue / startValue, 1.0 / (endIndex - startIndex));
       return startValue * Math.Pow(b, index - startIndex);

r6866	r7704
108	108	</ItemGroup>
109	109	<ItemGroup>
	110	<Compile Include="GeneralizedExponentialDiscreteDoubleValueModifier.cs" />
110	111	<Compile Include="MultiObjective\CrowdedComparisonSorter.cs" />
111	112	<Compile Include="MultiObjective\CrowdingDistanceAssignment.cs" />

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