Sunday, March 5, 2017

andrew ng collaborative filtering

recommender systems - collaborative filtering

If you know weights for movie attributes, romance, action etc, you can
learn weights for user preferences.

If you know weights for user preferences, you can compute movie attributes.

If you don't know both, start with a guess for one and compute other.
then reverse. then reverse. until it converges.

But there is another efficient approach which can solve for both together.

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