Demonstration of the speedup potential when taking advantage of sparsity in ALS-WR algorithm
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ALS-WR Tutorial Repository

This repo holds the original notebook from an excellent tutorial on the Alternating Least Squares with Weighted-λ-Regularization method, as well as a modified version where I compare the original computation with a dramatically sped-up version (~70x) that takes advantage of the sparsity while doing the same math.

Check out my blog post for more details.