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Old 05-07-2012, 05:12 AM
ladybird2012 ladybird2012 is offline
Join Date: Apr 2012
Posts: 32
Default Re: Netflix movie recommendations

Originally Posted by mjbeeson View Post
But what I don't understand yet is where these features come from. Did a human invent them? or did a machine algorithm invent them?

I'm glad you asked this question. I have also been wondering about where the features come from for the netflix problem. The last lecture hinted that the algorithm comes up with these features (The prof made the point that we can't say what a feature meant in coming up with a rating for the netflix question). But then I'm not entirely sure I understand where the vectors u and v on slide 6 of lecture 10 come from...Unless "feature" on slide 6 is different from "feature" in the discussion on interpretation of hidden layers (slide 21).
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