Methods and systems for efficient query rewriting

Details Methods and systems for efficient query rewriting Methods and systems for efficient query rewriting

2004-03-31

2010-11-23

Bétit, Jacob F (Department: 2169)

Data processing: database and file management or data structures

Database and file access

Search engines

C707S759000, C707S772000

Reexamination Certificate

active

07840547

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.

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