case SPEARMAN_RANK_CORRELATION:
return new SpearmanRankCorrelation();
case JACCARD_INDEX:
return new JaccardIndex();
case AVERAGE_COMMON_FEATURE_RANK:
return new AverageCommonFeatureRank();
case LIN:
return new LinSimilarity();
case KL_DIVERGENCE:
return new KLDivergence();
case KENDALLS_TAU: