Now showing items 1-4 of 4

    • Characterizing web search queries that match very few or no results 

      Altıngövde, İ. Ş.; Blanco, R.; Cambazoğlu, B. B.; Özcan, Rıfat; Sarıgil, Erdem; Ulusoy, Özgür (ACM, 2012-11)
      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 web search engines. In this work, we provide a detailed ...
    • Cost-aware strategies for query result caching in Web search engines 

      Ozcan, R.; Altingovde, I. S.; Ulusoy, O. (Association for Computing Machinery, 2011)
      Search engines and large-scale IR systems need to cache query results for efficiency and scalability purposes. Static and dynamic caching techniques (as well as their combinations) are employed to effectively cache query ...
    • Query forwarding in geographically distributed search engines 

      Cambazoglu, B.B.; Varol, Emre; Kayaaslan, Enver; Aykanat, Cevdet; Baeza-Yates, R. (ACM, 2010)
      Query forwarding is an important technique for preserving the result quality in distributed search engines where the index is geographically partitioned over multiple search sites. The key component in query forwarding is ...
    • Timestamp-based result cache invalidation for web search engines 

      Alıcı, Sadiye; Altingovde I.S.; Özcan, Rıfat; Cambazoglu, B.B.; Ulusoy, Özgür (ACM, 2011)
      The result cache is a vital component for efficiency of large-scale web search engines, and maintaining the freshness of cached query results is the current research challenge. As a remedy to this problem, our work proposes ...