Figure 1From: Application of independent component analysis to microarraysModel of gene expression within a cell. Each genomic expression pattern at a given condition, denoted by x i , is modeled as linear combination of genomic expression programs of independent biological processes. The level of activity of each biological process is different in each environmental condition. The mixing matrix A contains the linear coefficients a ij , where a ij = activity level of process j in condition i. The example shown uses data generated by Gasch et al. [48].Back to article page