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QUESTION
If user A and B both only rated a drama movie and acatoonmovie. User A gives rating 5 to the drama and 1 tocatoon, while user B gives rating 1 to the...
If user A and B both only rated a drama movie and a catoonmovie. User A gives rating 5 to the drama and 1 to catoon, while user B gives rating 1 to the drama and 5 to catoon. Is their similarity positive or negative?
