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Mike Nguyen


Active since 2017

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Non negative matrix (NMF) implementation
Hello I try to work on the traditional NMF with the paper http://www.columbia.edu/~jwp2128/Teaching/E4903/papers/nmf_nature.p...

meer dan 6 jaar ago | 0 answers | 0

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Change a bunch of files name
I have a set of images in image folder located at C:\temp\image. The images are from yale faces, and I want to add extension .jp...

bijna 7 jaar ago | 1 answer | 0

1

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Check if sum over dimension is 0
I have a matrix A_vk (VxK), and a matrix A_kn (KxN). How to check if A_.k. is 0 or not in which A_.k. = sum (1 to V) sum(1 to N)...

bijna 7 jaar ago | 0 answers | 0

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Sum over a dimension
Suppose I have a V-by-K A matrix, a K-by-K B matrix, and K-by-N C matrix. How should I sum over k from 1 to K specified summatio...

bijna 7 jaar ago | 1 answer | 0

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How to sample Multinomial Distribution
Suppose I have the X data with dimension(VxN), and probability rho(vkj) with k is latent variable How could I sample Matrix (Av...

bijna 7 jaar ago | 1 answer | 0

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