Function to calculate the ratio of genes that characterize a phenotype
(observed) among the genes that characterize a biological complex
versus the ratio of a set of randomly sampled genes (expected) among
the genes that characterize a biological complex.
Usage
densityEstimate(genename,interactome,perm)
Arguments
genename
Character vector of the gene names that characterize
a specific phenotype.
interactome
Contingency matrix of genes (rows) and biological
complexes (columns) (see package ScISI)
perm
Numeric vector indicating the number of simulations to
run to compute the expected ratios.