On Duplicate Results in a Search Session
Jiepu Jiang, Daqing He, Shuguang Han · D-Scholarship@Pitt (University of Pittsburgh) · 2012
In this paper, we introduce the PITT group’s methods and findings in TREC 2012 session track. After analyzing the search logs in session track 2011 and 2012 datasets, we find that users’ reformulated queries are very different from their previous ones, probably indicating their expectations to find not only relevant but also novel results. However, as indicated from our results, a major approach adopted by the session track participants, i.e. using relevance feedback information extracted from previous queries for search, will sacrifice the novelty of results for improving ad hoc search performance (e.g.