clustering.distance.spearman
The Spearman correlation coefficient is defined as the Pearson correlation coefficient between the ranked variables. See: https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient
The Spearman correlation coefficient is defined as the Pearson correlation coefficient between the ranked variables. See: https://en.wikipedia.org/wiki/Spearman%27s_rank_correlation_coefficient