about non negative matrix factorization

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junghawn lim
junghawn lim on 24 Oct 2018
Answered: Jan on 24 Oct 2018
what is N*M in D = norm(A-W*H,'fro')/sqrt(N*M)? This has never been mentioned before. and i know nnmf muliplicative algorithm does not change initial value. when I use that code like second picture i guess W1 must be fixed stdW , but it changed
please tell me why.

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Answers (1)

Jan
Jan on 24 Oct 2018
According to your screenshot, the function operates on an "n by m matrix". Then I'm convinced that "N*M" is the number of elements.

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