Relative contribution of arraylets/genelets to the two datasets. Genelets with θ
> 0 (i.e. small k) correspond to those expressed predominantly in the microarray dataset while genelets with θ
< 0 (i.e. large k) correspond to those expressed predominantly in the Q-PCR dataset. The angles θ
result from a GSVD defined by the genes marked by asterisks in the Table in the online Additional Material [see Additional file 1].