Problem I am trying to implemented majorization-minimization (MM) algorithm to solve the NMF problem \min_{\mathbf{V},\mathbf{W}}\Vert \mathbf{X}-\mathbf{VW}\Vert_F^2=\sum_i\sum_j(x_{ij}-\sum_k v_{ik}w_{kj})^2 The optimal \mathbf{V} and \mathbf{W} are found using iterative updates \begin{array}…

Optimizing code for NMF (Non-negative Matrix Factorization)

Hua-Zhou May 4, 2019, 3:26am 9

Funny to see my homework assignment here!
http://hua-zhou.github.io/teaching/biostatm280-2019spring/hw/hw2/hw02.html
Students seem to be working hard to improve their Julia code

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