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      • Department of Computer Engineering
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      A financial cost metric for result caching

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      Author
      Sazoğlu, Fethi Burak
      Cambazoğlu, B. B.
      Özcan, R.
      Altıngövde, I. S.
      Ulusoy, Özgür
      Date
      2013-07-08
      Source Title
      SIGIR 2013 - Proceedings of the 36th International ACM SIGIR Conference on Research and Development in Information Retrieval
      Publisher
      ACM
      Pages
      873 - 876
      Language
      English
      Type
      Conference Paper
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      Abstract
      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 into account when evaluating the performance of result caching strategies and propose cost-aware caching strategies. In this paper, we propose a financial cost metric that goes one step beyond and takes also the hourly electricity prices into account when computing the cost. We evaluate the most well-known static, dynamic, and hybrid result caching strategies under this new metric. Moreover, we propose a financial-cost-aware version of the well-known LRU strategy and show that it outperforms the original LRU strategy in terms of the financial cost metric. Copyright © 2013 ACM.
      Keywords
      Financial cost
      Metric
      Result caching
      Web search engines
      Caching strategy
      Cost-aware
      Electricity prices
      Hit rate
      Processing overhead
      Information retrieval
      Search engines
      Websites
      Costs
      Permalink
      http://hdl.handle.net/11693/27979
      Published Version (Please cite this version)
      https://doi.org/10.1145/2484028.2484182
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      • Department of Computer Engineering 1368
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