2013/8/30 Will Buckner <wbuck...@beatsmusic.com>:
> Damn, hmm. This just seems so so heavy to calculate reconstruction_err,
> which isn't even used inside the algorithm. I don't even use it in the
> pipeline. My current best idea is just to subclass ProjectedGradientNMF()
> and overload fit_transform(), not computing reconstruction_err at all....

Try upgrading to the latest (Git) version of scikit-learn; I just
pushed a patch that takes some 20-30% off the running time of NMF, and
should decrease the memory usage too.

-- 
Lars Buitinck
Scientific programmer, ILPS
University of Amsterdam

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