samoa-api/src/main/java/org/apache/samoa/learners/classifiers/ensemble/BoostMAProcessor.java [176:193]:
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    AttributeSplitSuggestion nullSplit = new AttributeSplitSuggestion(null, new double[0][],
        this.splitCriterion.getMeritOfSplit(preSplitDist, new double[][] { preSplitDist }));

    if ((bestSuggestion == null) || (nullSplit.compareTo(bestSuggestion) > 0)) {
      secondBestSuggestion = bestSuggestion;
      bestSuggestion = nullSplit;
    } else {
      if ((secondBestSuggestion == null) || (nullSplit.compareTo(secondBestSuggestion) > 0)) {
        secondBestSuggestion = nullSplit;
      }
    }

    boolean shouldSplit = false;

    if (secondBestSuggestion == null) {
      shouldSplit = true;
    } else {
      double hoeffdingBound = computeHoeffdingBound(
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samoa-api/src/main/java/org/apache/samoa/learners/classifiers/trees/ModelAggregatorProcessor.java [478:495]:
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    AttributeSplitSuggestion nullSplit = new AttributeSplitSuggestion(null, new double[0][],
        this.splitCriterion.getMeritOfSplit(preSplitDist, new double[][] { preSplitDist }));

    if ((bestSuggestion == null) || (nullSplit.compareTo(bestSuggestion) > 0)) {
      secondBestSuggestion = bestSuggestion;
      bestSuggestion = nullSplit;
    } else {
      if ((secondBestSuggestion == null) || (nullSplit.compareTo(secondBestSuggestion) > 0)) {
        secondBestSuggestion = nullSplit;
      }
    }

    boolean shouldSplit = false;

    if (secondBestSuggestion == null) {
      shouldSplit = true;
    } else {
      double hoeffdingBound = computeHoeffdingBound(
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