Similarity With Dot Product

Core AI Intuitions

A glimpse of Similarity With Dot Product

Suppose we describe a movie with two chosen numbers: action content, then comedy content. A viewer's preference is u = [1, 0], so our tiny scoring rule rewards action and ignores comedy. These are invented features for this example, not measurements from a recommendation system.

Movie A has features [1, 0]. Movie B has [2, 2].

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