Changeset 12970 for branches/HeuristicLab.EvolutionTracking/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Tracking/SchemaDiversification

Timestamp:

09/25/15 19:25:30 (9 years ago)

Author:

bburlacu

Message:

#1772: Fix plugin dependencies. Small changes to the SchemaEvaluator: require a minimum of 2 matches for each schema (regardless of the MinimumSchemaFrequency) and use Math.Floor instead of Math.Round when determining the number of individuals to be replaced according to the ReplacementRatio.

File:

• branches/HeuristicLab.EvolutionTracking/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Tracking/SchemaDiversification/SchemaEvaluator.cs (modified) (2 diffs)

branches/HeuristicLab.EvolutionTracking/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Tracking/SchemaDiversification/SchemaEvaluator.cs

@@ -190 +190 @@
       }
 
-      if (matchingIndividuals.Count < MinimumSchemaFrequency.Value * individuals.Count) {
+      if (matchingIndividuals.Count < (int)Math.Max(2, Math.Round(MinimumSchemaFrequency.Value * individuals.Count))) {
         ChangedTreesParameter.ActualValue = new IntValue(0);
         return base.Apply();
@@ -202 +202 @@
 
       var oc = new OperationCollection();
-      int n = (int)Math.Round(matchingIndividuals.Count * ReplacementRatio.Value);
+      int n = (int)Math.Floor(matchingIndividuals.Count * ReplacementRatio.Value);
       var individualsToReplace = RandomReplacement.Value ? matchingIndividuals.SampleRandomWithoutRepetition(random, n).ToList()
                                                          : matchingIndividuals.OrderBy(x => (DoubleValue)x.Variables["Quality"].Value).Take(n).ToList();