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From Chris Hostetter <>
Subject Re: Boosting documents by categorical preferences
Date Tue, 19 Nov 2013 16:51:17 GMT
: My approach was something like:
: 1) Look at the categories that the user has preferred and compute the
: z-score
: 2) Pick the top 3 among those
: 3) Use those to boost search results.

I think that totaly makes sense ... the additional bit i was suggesting 
that you consider is that instead of picking the "highest" 3 z-scores, 
pick the z-scores with the greatest absolute value ... that way if someone 
is a very booring person and their "positive interests" are all basically 
exactly the same as the mean for everyone else, but they have some very 
strong "dis-interests" you don't bother boosting on those miniscule 
interests and instead you negatively boost on the things they are 
antogonistic against.


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