The function calculates coexpression patterns between genes
feature_coexp(so)SiFINeT object with coexp (gene coexpression matrix) updated.
a SiFINeT object
The coexpression pattern of a pair of genes is a normalized co-occurrence of high (or equivalently low) expression level of the 2 genes in the classified count matrix. The normalization is based on the estimated quantiles of the low-high separation instead of the quantiles used for quantile regressions. Theoretically, the distribution of coexpression patterns should asymptotically follow standard Gaussian distribution if at least one of the 2 genes is not differentially expressed feature gene.