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. Author manuscript; available in PMC: 2014 Oct 29.
Published in final edited form as: IEEE Symp Comput Intell Bioinforma Comput Biol Proc. 2012 May;2012:387–396. doi: 10.1109/CIBCB.2012.6217256

Fig. 2.

Fig. 2

Data Distribution: The data utilized in many gene expression studies is inherently positive. PCA and SVD can be considered as methods that rotate the standard Cartesian coordinates to align with this data. BD, BFRM, and NMF search for non-orthogonal vectors to capture the distribution of the data.