Monday, January 14, 2008

Cult movies and Trekkies

Been doing some work on the Netflix prize to identify whether cult followings of different movies provide more accurate estimates. The Trekkies win hands down. These are the top most similar scores produced by the model to Star Trek : Voyager: Season 1 (in order).

Star Trek : Voyager: Season 2
Star Trek : Voyager: Season 3
Star Trek : Voyager: Season 4
Star Trek : Voyager: Season 5
Star Trek : Voyager: Season 6
Star Trek : Voyager: Season 7

Such reliability - even down to the order of the seasons! Quite incredible. Even more amazing, the 26 most similar scored films are all versions of Star Trek and the 37 most similar films are all Star Trek or Stargate films.

This is a phenomena definitely worth pursuing.
Blank

Thursday, January 10, 2008

Back from the holidays. Found a great new way to calculate global effects - giving me a score of .9507, better than the original Netflix collaborative filtering method at the beginning of the contest. Now can I use it to improve my overall score?