recommender systems

Projects

Comparing Collaborative Filtering Methods

I wanted to dive into the fundamentals of collaborative filtering and recommender systems, so I implemented a few common methods and compared them.

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Data Science

Taking Advantage of Sparsity in the ALS-WR Algorithm

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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Data Science

Analyzing Larger-than-Memory Data on your Laptop

If you want to run some analysis on a dataset that's just a little too big to load into memory on your laptop, but you don't want to leave the comfort of using Pandas dataframes in a Jupyter notebook, then Dask may be just your thing. Dask is an amazing Python library that lets you do all your Pandas-style dataframe manipulations with just a few simple tweaks so you don't have to worry about Jupyter freezing up.

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