private static void createAVG(List<Map<String, Float>> normalizedScores) {
   if (isFirstTime) {
     avgScore = AVGScore.getFreqFingerprint(normalizedScores);
     isFirstTime = false;
   } else {
     avgScore = AVGScore.getCachedFreqFingerprint(normalizedScores);
   }
 }
 private static void createCorrStr(List<Map<String, Float>> normalizedScores) {
   CorrelationFactor factors = new CorrelationFactor(normalizedScores, avgScore);
   if (isFirstTime) {
     isFirstTime = false;
     corrStrengthScore = AVGScore.getCorrelationStrengthFingerprint(factors.getCorrFactors());
   } else {
     corrStrengthScore =
         AVGScore.getCachedCorrelationStrengthFingerprint(factors.getCorrFactors());
   }
 }