Hierarchical Clustering with P-Values via Multiscale Bootstrap
Resampling
Ryota Suzuki <suzuki@ef-prime.com>, Hidetoshi Shimodaira
        <shimo@is.titech.ac.jp>
pvclust is a package for assessing the uncertainty in
        hierarchical cluster analysis. It provides AU (approximately
        unbiased) p-values as well as BP (boostrap probability) values
        computed via multiscale bootstrap resampling.