Figure 5
From: Independent component analysis of Alzheimer's DNA microarray gene expression data
The corresponding histograms of the first 10 PCs (A) and ICs (B) in figure 4. The histograms of ICs in (B) displayed more super-Gaussian than did that of the PCs (A). ICA extracted sparser gene signatures, and, since each of gene signature only affects a relatively small percentage of all genes, we can expect that ICA found more significant genes related to AD.