Beyond the session timeout: automatic hierarchical segmentation of search topics in query logs

@inproceedings{Jones2008BeyondTS,
  title={Beyond the session timeout: automatic hierarchical segmentation of search topics in query logs},
  author={R. Jones and K. Klinkner},
  booktitle={CIKM '08},
  year={2008}
}
Most analysis of web search relevance and performance takes a single query as the unit of search engine interaction. When studies attempt to group queries together by task or session, a timeout is typically used to identify the boundary. However, users query search engines in order to accomplish tasks at a variety of granularities, issuing multiple queries as they attempt to accomplish tasks. In this work we study real sessions manually labeled into hierarchical tasks, and show that timeouts… Expand
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