83 search results - page 1 / 17 » Factorizing Complex Predicates in Queries to Exploit Indexes |
SIGMOD
2003
ACM
14 years 5 months ago
2003
ACM
Decision-support applications generate queries with complex predicates. We show how the factorization of complex query expressions exposes significant opportunities for exploiting...
VLDB
2005
ACM
13 years 10 months ago
2005
ACM
This paper introduces a novel type of query, what we name Spatio-temporal Pattern Queries (STP). Such a query specifies a spatiotemporal pattern as a sequence of distinct spatial...
SIGMOD
2006
ACM
14 years 5 months ago
2006
ACM
Recently, there has been extensive research that generated a wealth of new XML full-text query languages, ranging from simple Boolean search to combining sophisticated proximity a...
WWW
2006
ACM
14 years 5 months ago
2006
ACM
We introduce a new, powerful class of text proximity queries: find an instance of a given "answer type" (person, place, distance) near "selector" tokens matchi...
ICDE
2002
IEEE
14 years 6 months ago
2002
IEEE
XML and other semi-structured data may have partially specified or missing schema information, motivating the use of a structural summary which can be automatically computed from ...