Recommender systems Tag

  1. Taking Advantage of Sparsity in the ALS-WR Algorithm

    Sat 11 February 2017

    The ALS-WR algorithm works well for recommender systems involving a sparse matrix of users by items to review, which happens when most people only review a small subset of many possible items (businesses, movies, etc.). By tweaking the code from a great tutorial to take advantage of this sparsity, I was able to dramatically reduce the computation time.

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