Here are some great resources on NMF or NonNegative Matrix Factorization. I might put out my own tutorial on the subject, if I can find the time to do so.

Tutorial:

 http://spinner.cofc.edu/~langvillea/NISS-NMF.pdf?referrer=webcluster&

Research Papers:

http://research.microsoft.com/pubs/119077/DNMF.pdf

http://www.inma.ucl.ac.be/publi/441048.pdf

http://www.bsp.brain.riken.jp/publications/2008/MLSP-08-Cichocki-Phan-fin_corrected_CesarV1.pdf

http://lgm.fri.uni-lj.si/matic/clanki/smc2009.pdf

Will NMF be the next stop of the usual snakeoil marketers, SEO quack “science” sellers, and purveyors of falsehood? (Who said that last expression before? One crook that is now becoming one…ha, ha.

PS: I’ve added the following resources:

http://hebb.mit.edu/people/seung/papers/nmfconverge.pdf

http://spinner.cofc.edu/~langvillea/SIAMSEAS-NMF.pdf

http://www.csie.ntu.edu.tw/~cjlin/nmf/index.html

http://www.stanford.edu/~vcs/papers/NMFCDP.pdf

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