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Struggling or Exploring? Disambiguating Long Search Sessions

Struggling or Exploring? Disambiguating Long Search Sessions . Ahmed Hassan, Ryen White, Susan Dumais and Yi-Min Wang. Web Search Query Taxonomy ( Broder , 2002).

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Struggling or Exploring? Disambiguating Long Search Sessions

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  1. Struggling or Exploring? Disambiguating Long Search Sessions

    Ahmed Hassan, Ryen White, Susan Dumais and Yi-Min Wang
  2. Web Search Query Taxonomy (Broder, 2002) Informational queries: The purpose of such queries is to find information assumed to be available on the web in a static form (Broder, 2002) Users query search engines in order to accomplish tasks issuing multiple queries as they attempt to accomplish tasks (Jones and Klinkner, 2009) Navigational Transactional Informational
  3. Moving from Queries to Sessions At the session/task level, informational search can be: In exploratory search, users generally combine querying and browsing strategies to foster learning and investigation(White and Roth, 2009)
  4. Long Sessions: Exploring or Struggling? Exploring Users are engaged in an open-ended and multi-faceted information-seeking task to foster learning and discovery. Struggling Users are experiencing difficulty locating the required information. Note that struggling may not necessarily result in failure
  5. Long Sessions: Exploring or Struggling? Struggling
  6. Long Sessions: Exploring or Struggling? Exploring
  7. Characterizing Exploring vs. Struggling BehaviorQuery Similarity Queries are more different from the first query in struggling sessions.
  8. Characterizing Exploring vs. Struggling BehaviorQueries Transition Strategies When exploring, addition & removal are more popular and substitution is less popular. Adding Keyword, Removing Keywords, and Substituting Keywords(morphological variations, spelling corrections and Semantic variations).
  9. Characterizing Exploring vs. Struggling BehaviorClicks Clicks are more when exploring. Difference gets larger as the session progresses.
  10. Characterizing Exploring vs. Struggling BehaviorDwell Time Dwell time is longer when exploring. Last query accounts for a large proportion of dwell time when struggling.
  11. Topics Characterizing Exploring vs. Struggling BehaviorTopics The likelihood of exploring vs. struggling varies significantly depending on the topic.
  12. Predicting Session Type
  13. Exploring vs. Struggling Prediction Accuracy improves as more behavioral information is available.
  14. Feature Importance 10 points if feature ranked first, 9 if ranked second, etc. 0 points if ranked beyond the first 10 features Feature contribution varies depending on the point where we make the prediction.
  15. Implication on Success At a high level, user behavior in exploring and struggling is similar: Multiple consecutive related queries Multiple queries is a good thing when exploring (engagement) Multiple queries is a bad thing when struggling (effort)
  16. Success Prediction Integrating the session type into search success models significantly improves performance.
  17. Thanks! Ahmed Hassan hassanam@microsoft.com
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