785 search results - page 135 / 157 » Efficient Processing of Top-k Queries in Uncertain Databases |
TDM
2004
13 years 10 months ago
2004
This paper examines the use of XML for modern extractionbased question answering (QA). We feel that the XML community has taken too narrow a view of structured retrieval, and that...
SIGMOD
2007
ACM
14 years 9 months ago
2007
ACM
The Pathfinder XQuery compiler has been enhanced by a new code generator that can target any SQL:1999-compliant relational database system (RDBMS). This code generator marks an im...
WWW
2008
ACM
14 years 9 months ago
2008
ACM
In this paper, we formalize the problem of Basic Graph Pattern (BGP) optimization for SPARQL queries and main memory graph implementations of RDF data. We define and analyze the c...
SIGMOD
1996
ACM
14 years 28 days ago
1996
ACM
Magic sets rewriting is a well-known optimization heuristic for complex decision-support queries. There can be many variants of this rewriting even for a single query, which diffe...
CIKM
2009
Springer
14 years 3 months ago
2009
Springer
Background: Finding relevant articles from PubMed is challenging because it is hard to express the user’s specific intention in the given query interface, and a keyword query ty...