Changeset 9475 for branches/LearningClassifierSystems/HeuristicLab.Optimization.Operators.LCS/3.3/GAssist/MDL

Timestamp:

05/09/13 18:57:22 (12 years ago)

Author:

sforsten

Message:

#1980: several small bug fixes

File:

• branches/LearningClassifierSystems/HeuristicLab.Optimization.Operators.LCS/3.3/GAssist/MDL/MDLCalculator.cs (modified) (3 diffs)

branches/LearningClassifierSystems/HeuristicLab.Optimization.Operators.LCS/3.3/GAssist/MDL/MDLCalculator.cs

@@ -82 +82 @@
         double error = bestSolution.TrainingExceptionsLength;
         double tl = (bestSolution.TrainingTheoryLength * bestSolution.Classes) / bestSolution.TrainingNumberOfAliveRules;
+        if (tl.IsAlmost(0.0)) {
+          //as done in the original implementation
+          tl = 0.00000001;
+        }
         theoryWeight = (initialTheoryLengthRatio / (1.0 - initialTheoryLengthRatio)) * (error / tl);
         iterationsSinceBest = 0;
@@ -87 +91 @@
 
       if (activated && !fixedWeight &&
-        GetLastIterationsAccuracyAverage(weightAdaptionIterations) == 1.0) {
+        GetLastIterationsAccuracyAverage(weightAdaptionIterations).IsAlmost(1.0)) {
         fixedWeight = true;
       }
 
       if (activated && !fixedWeight) {
-        if (bestSolution.TrainingAccuracy != 1.0) {
+        if (bestSolution.TrainingAccuracy.IsAlmost(1.0)) {
           if (iterationsSinceBest == weightAdaptionIterations) {
             theoryWeight *= weightRelaxFactor;
@@ -100 +104 @@
       }
 
-      //if (currentIteration != 0) {
       UpdateStatistic(bestSolution.TrainingAccuracy);
-      //}
     }