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I have a sparse matrix whose shape is 570000*3000. I tried nima to do NMF (using the default nmf method, and set max_iter to 65). However, I found nimfa very slow. Have anyone used a faster library to do NMF?
I have used
libNMFbefore. It’s written in C and is very fast. There is a paper documenting the algorithm and code.The paper also lists several alternative packages for NMF (in bunch of different languages (which I have copied here for future reference).
Disclaimer: I have not tried any of these other packages (aside from MATLAB’s).