User similarity
The goal is to make automated prediction of user preferences by collecting evaluation
data from many other users, especially those whose evaluations are similar to evaluations
from the target user. Denote the rating from user u on object � as ru� and let u be the set
of objects that user u has evaluated. The average rating given by u is �ru = 1
User similarity The goal is to make automated prediction ...
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本文标题：User similarity
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