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ThresholdCalculators

Timestamp:

08/08/12 14:04:17 (12 years ago)

Author:

mkommend

Message:

#1081: Intermediate commit of trunk updates - interpreter changes must be redone.

Location:

branches/HeuristicLab.TimeSeries

Files:

Property svn:ignore

old	new
20	20	bin
21	21	protoc.exe
	22	_ReSharper.HeuristicLab.TimeSeries-3.3

branches/HeuristicLab.TimeSeries/HeuristicLab.Problems.DataAnalysis
- Property svn:mergeinfo changed
  /trunk/sources/HeuristicLab.Problems.DataAnalysis merged: 7921,7969,8113,8121,8126,8139,8151-8153,8167,8174,8246,8355

-                      r7268
+                      r8430
     public static void CalculateThresholds(IClassificationProblemData problemData, IEnumerable<double> estimatedValues, IEnumerable<double> targetClassValues, out double[] classValues, out double[] thresholds) {
       int slices = 100;
+      double minThresholdInc = 10e-5; // necessary to prevent infinite loop when maxEstimated - minEstimated is effectively zero (constant model)
       List<double> estimatedValuesList = estimatedValues.ToList();
       double maxEstimatedValue = estimatedValuesList.Max();
       double minEstimatedValue = estimatedValuesList.Min();
       double thresholdIncrement = (maxEstimatedValue - minEstimatedValue) / slices;
+      double thresholdIncrement = Math.Max((maxEstimatedValue - minEstimatedValue) / slices, minThresholdInc);
       var estimatedAndTargetValuePairs =
         estimatedValuesList.Zip(targetClassValues, (x, y) => new { EstimatedValue = x, TargetClassValue = y })
 …
       // incrementally calculate accuracy of all possible thresholds
-      int[,] confusionMatrix = new int[nClasses, nClasses];
       for (int i = 1; i < thresholds.Length; i++) {
         double lowerThreshold = thresholds[i - 1];

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