Now showing items 1-4 of 4

    • Document replication strategies for geographically distributed web search engines 

      Kayaaslan, E.; Cambazoglu, B. B.; Aykanat, C. (Elsevier Ltd., 2013)
      Large-scale web search engines are composed of multiple data centers that are geographically distant to each other. Typically, a user query is processed in a data center that is geographically close to the origin of the ...
    • A financial cost metric for result caching 

      Sazoglu, F. B.; Cambazoglu, B. B.; Ozcan, R.; Altingovde, I. S.; Ulusoy, Ö. (2013)
      Web search engines cache results of frequent and/or recent queries. Result caching strategies can be evaluated using different metrics, hit rate being the most well-known. Recent works take the processing overhead of queries ...
    • Query forwarding in geographically distributed search engines 

      Cambazoglu, B.B.; Varol, E.; Kayaaslan, E.; Aykanat, C.; Baeza-Yates, R. (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 ...
    • Strategies for setting time-to-live values in result caches 

      Sazoglu, F. B.; Cambazoglu, B. B.; Ozcan, R.; Altingovde, I. S.; Ulusoy, Ö. (2013)
      In web query result caching, staleness of queries are often bounded via a time-to-live (TTL) mechanism, which expires the validity of cached query results at some point in time. In this work, we evaluate the performance ...