Questions tagged [non-negative-matrix-factorization]

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How matrix factorization helps with recommendations when it converges to the initial user-items matrix?

We can say that matrix factorization of a matrix $R$, in general, is finding two matrices $P$ and $Q$ such that $R \approx P.Q^{T}$ with some constraints on $P$ and $Q$. Looking at some matrix ...
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What next after LDA and NMF for topic modelling (with Python)?

I have used NMF and LDA for topic modelling in Python, with what I would call good results with NMF, and poor results with LDA. My data is highly domain-specific, with a lot of unique/specific ...