Monday, June 30, 2008

A Decision Theoretic Framework for Ranking using Implicit Feedback

This paper presents a decision theoretic ranking system that incorporates both explicit and implicit feedback. The system has a model that predicts, given all available data at query time, different interactions a person might have with search results. Possible interactions include relevance labelling and clicking. We define a utility function that takes as input the outputs of the interaction model to provide a real valued score to the user's session. The optimal ranking is the list of document...

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