Extracts the Backbone from Graphs

An implementation of methods for extracting an unweighted unipartite graph (i.e. a backbone) from an unweighted unipartite graph (Hamann et al., 2016 ), a weighted unipartite graph (Serrano et al., 2009 ), the projection of an unweighted bipartite graph (Neal et al., , or the projection of a weighted bipartite graph (Neal, 2017 ). It also provides utility functions to generate random binary matrices with (a) given density, (b) given row and column marginals, and (c) given row and column marginal distributions.