Collaborative Filtering with Temporal Dynamics

Collaborative Filtering with Temporal Dynamics: Yehuda Koren's paper ( , describes recommendation algorithm incorporating time dependent info.

Koren's paper describes in part the winning algorithm for Netfix's contest, . It is very interesting algorithm and all comments on the paper are welcome. A news article describing the team is here:

A tutorial on Collaborative Filtering can be found in the second chapter of the book: Programming Collective Intelligence: Building Smart Web 2.0 Applications
by Toby Segaran. Koren did a fantastic job of adding time dependence to the algorithms described by Segaran.

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