Posted by ZeldorBlat on 10/26/05 05:50

This problem is actually more difficult than one might think -- if you
want to get accurate results. Companies with very large datasets like
Amazon spend a huge number of processor cycles to come up with those
types of rankings.

Do a search for "collaborative filtering" and "nearest neighbor." I
think you'll find that itll be much easier to implement any of the
several algorithms in a language other than SQL.

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