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      • Dept. of Computer Engineering - Master's degree
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      •   BUIR Home
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      • Bilkent Theses
      • Theses - Department of Computer Engineering
      • Dept. of Computer Engineering - Master's degree
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      Analysis of Web search queries with very few or no results

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      Author
      Sarıgil, Erdem
      Advisor
      Ulusoy, Özgür
      Date
      2012
      Publisher
      Bilkent University
      Language
      English
      Type
      Thesis
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      Abstract
      Nowadays search engines have significant impacts on people’s life with the rapid growth of World Wide Web. There are billions of web pages that include a huge amount of information. Search engines are indispensable tools for finding information on the Web. Despite the continuous efforts to improve the web search quality, a non-negligible fraction of user queries end up with very few or even no matching results in leading commercial web search engines. In this thesis, we provide the first detailed characterization of such queries based on an analysis of a real-life query log. Our experimental setup allows us to characterize the queries with few/no results and compare the mechanisms employed by the three major search engines to handle them. Furthermore, we build machine learning models for the prediction of query suggestion patterns and no-answer queries.
      Keywords
      Web search engines
      Search result quality
      Query difficulty
      Query results
      Permalink
      http://hdl.handle.net/11693/15684
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      • Dept. of Computer Engineering - Master's degree 516
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