how much variation in the dataset they explain. The distribution of variance explained for the observed and null data are shown as blue and red circles, respectively.<p><b>Copyright information:</b></p><p>Taken from "Mapping gene expression quantitative trait loci by singular value decomposition and independent component analysis"</p><p>http://www.biomedcentral.com/1471-2105/9/244</p><p>BMC Bioinformatics 2008;9():244-244.</p><p>Published online 20 May 2008</p><p>PMCID:PMC2424053.</p><p></p