公开(公告)号：US10685017B1

公开(公告)日：2020-06-16

申请号：US14885641

申请日：2015-10-16

Applicant: Google LLC

Inventor： Paul A. Tucker ,  Amit Singhal ,  Eric Jackson

IPC: G06F16/20 ,  G06F16/242 ,  G06F16/9535

Abstract: Methods and systems for efficient query rewriting and the like are described here. One such described method comprises: offline mapping frequently-seen search queries to rewritten queries that may be better for searching; offline caching the mapping in a cache memory; and upon receiving a search query from a user similar to one of the mapped search queries, obtaining a corresponding rewritten query from the mapping in the cache memory based on predetermined conditions, and issuing a search of the rewritten query to the backend data system in order to avoid having to issue a search query to the backend data system twice while the user is online.