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From Ted Dunning <ted.dunn...@gmail.com>
Subject Re: User Similarity and neighborhoods
Date Sun, 01 Apr 2012 18:21:58 GMT
It depends. 

The large scale systems for item based recommendations definitely do not do this. 

Sent from my iPhone

On Apr 1, 2012, at 7:13 AM, ziad kamel <ziad.kamel25@gmail.com> wrote:

> Do Mahout compute the similarity between every pair of users to
> determine their neighborhoods ?

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