Caching Scores for Faster Query Processing with Dynamic Pruning in Search Engines


Yafay E., Altıngövde İ. S.

28th ACM International Conference on Information and Knowledge Management (CIKM), Beijing, Çin, 3 - 07 Kasım 2019, ss.2457-2460 identifier identifier

  • Cilt numarası:
  • Doi Numarası: 10.1145/3357384.3358154
  • Basıldığı Şehir: Beijing
  • Basıldığı Ülke: Çin
  • Sayfa Sayıları: ss.2457-2460

Özet

We propose to use a score cache, which stores the score of the k.th result of a query, to accelerate top-k query processing with dynamic pruning methods (i.e., WAND and BMW). We introduce heuristics that, for a new query, generate its subsets and probe the score cache to obtain a lower-bound on its score threshold. Our experiments show up to 8.6% savings in mean processing time for the queries that are not seen before, i.e., cannot benefit from a result cache.