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Computational Linear Algebra 2: Topic Modelling with SVD & NMF - JJtheTutor
Course materials available here: https://github.com/fastai/numerical-linear-algebra We use a dataset of messages posted on discussion forums to identify topics. A term-document matrix represents the frequency of the vocabulary in the documents. We factor it using Singular Value Decomposition (SVD) and Non-negative Matrix Factorization (NMF). We use PyTorch as a GPU-accelerated alternative to Numpy to speed things…