User similarity
2017-04-19 本文已影响0人
论语算盘
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
