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Building a Recommendation Engine with Scala by Saleem Ansari

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What is ALS?

What is ALS and how does it work? It is a matrix factorization algorithm, so it essentially breaks down a matrix M into two matrices X and Y such that:

What is ALS? where What is ALS? is the user rating matrix, and What is ALS? and What is ALS? are the two factors.

Since there could be millions of users and many thousands of items, M and N are typically very large values. We typically choose ...

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