Fig. 2From: Improving knowledge on the activation of bone marrow fibroblasts in MGUS and MM disease through the automatic extraction of genes via a nonnegative matrix factorization approach on gene expression profilesGraphical illustration of NMF. Microarray matrix X is modeled as the linear combination of a set of patterns, the columns of W, and the assignment of genes to those patterns with varying strengths, the rows of HBack to article page