Document similarity calculations using cosine similarity and TF-IDF weights

Generates a tree representing the branches or revisions to a set of HTML files

GSL extension: Filtering Datasets via Highpass, Lowpass, Bandpass or Bandblock

A suite for basic and advanced statistics on Ruby

Install gsl, statistics2 and provides a C extension to optimize the following methods * Vector#frecuencies * Vector#set_valid_data * Vector#check_type * Dataset#case_as_hash * Dataset#case_as_array * Bivariate::Tetrachoric

Perform user experiments and A/B tests in your rails apps