Alright, we're going to actually take the simple idea of KNN and apply that to a more complicated problem, and that's predicting the rating of a movie given just its genre and rating information. So, let's dive in and actually try to predict movie ratings just based on the KNN algorithm and see where we get. So, if you want to follow along, go ahead and open up the KNN.ipynb and you can play along with me.
What we're going to do is define a distance metric between movies just based on their metadata. By metadata I just mean information that is intrinsic to the movie, that is, the information associated with the movie. Specifically, we're going to look at the genre classifications of the movie.
Every movie in our MovieLens dataset has additional information on what genre it belongs to. A movie can belong to more...
