Re: [Scikit-learn-general] performance/scalability of NMF

Hi Roberto, In 0.17, we added a coordinate descent solver for NMF, which is more efficient than previous projected gradient solver. About performances for both dense and sparse data, I link you to this pull-request for a better NMF benchmark

[Scikit-learn-general] performance/scalability of NMF

Are there results about performance and scalability of scikit-learn implementation of NMF? According to this thread on SO http://stackoverflow.com/questions/18575846/non-negative-matrix-factorization-of-sparse-input There are scalability issue. I would be interested to know the biggest dataset