651 search results - page 13 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
ICDCS
2008
IEEE
14 years 2 months ago
2008
IEEE
This paper considers a multi-query optimization issue for distributed similarity query processing, which attempts to exploit the dependencies in the derivation of a query evaluati...
ICDE
2006
IEEE
14 years 9 months ago
2006
IEEE
The XPath language incorporates powerful primitives for formulating queries containing nested subexpressions which are existentially or universally quantified. However, even the b...
VLDB
2006
ACM
14 years 8 months ago
2006
ACM
While the information published in the form of XML-compliant documents keeps fast mounting up, efficient and effective query processing and optimization for XML have now become mor...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...