Precision prediction based on ranked list coherence

  title={Precision prediction based on ranked list coherence},
  author={Steve Cronen-Townsend and Yun Zhou and W. Bruce Croft},
  journal={Information Retrieval},
We introduce a statistical measure of the coherence of a list of documents called the clarity score. Starting with a document list ranked by the query-likelihood retrieval model, we demonstrate the score's relationship to query ambiguity with respect to the collection. We also show that the clarity score is correlated with the average precision of a query and lay the groundwork for useful predictions by discussing a method of setting decision thresholds automatically. We then show that passage… CONTINUE READING
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