case PEARSON_CORRELATION:
return new PearsonCorrelation();
case EUCLIDEAN:
return new EuclideanSimilarity();
case SPEARMAN_RANK_CORRELATION:
return new SpearmanRankCorrelation();
case JACCARD_INDEX:
return new JaccardIndex();
case AVERAGE_COMMON_FEATURE_RANK:
return new AverageCommonFeatureRank();
case LIN: