Dear colleagues,

We are pleased to announce the launch of the Relevance Prediction Challenge, which is a part of the WSDM 2012 Web Search Click Data (WSCD) workshop. This challenge provides a unique opportunity to consolidate and scrutinize the work from industrial labs on predicting the relevance of URLs using user search behavior. It also provides a fully anonymized dataset shared by Yandex, which has user queries, clicks on URLs and their relevance labels.

Important Dates:

Oct 15, 2011 - Challenge opens
Dec 15, 2011 - End of challenge
Dec 25, 2011 - Winners candidacy notification
Jan 20, 2012 - Reports deadline
Feb 12, 2012 - WSCD workshop at WSDM 2012 (http://research.microsoft.com/en-us/um/people/nickcr/wscd2012/) and Winners announcement

The top three competitors will receive the following cash prizes:

1st place: $5,000
2nd place: $3,000
3rd place: $1,000

Contestants can participate as individuals, or as teams. You will find a detailed description of the task, data sets and result evaluation methodology at:
http://imat-relpred.yandex.ru/en

Challenge Organizers

Pavel Serdyukov, Eugene Kharitonov, Alexey Gorodilov (Yandex)
Georges Dupret (Yahoo!)
Nick Craswell (Microsoft)