121 search results - page 16 / 25 » Semantic optimization techniques for preference queries |
CP
2003
Springer
13 years 12 months ago
2003
Springer
Constraint satisfaction has been applied with great success in closed-world scenarios, where all options and constraints are known from the beginning and fixed. With the internet,...
SERVICES
2008
13 years 8 months ago
2008
Distributed stream query services must simultaneously process a large number of complex, continuous queries with stringent performance requirements while utilizing distributed pro...
SIGMOD
2003
ACM
14 years 6 months ago
2003
ACM
We propose a framework for integrating data from multiple relational sources into an XML document that both conforms to a given DTD and satisfies predefined XML constraints. The f...
SYRCODIS
2008
13 years 8 months ago
2008
Element constructor is one of most expensive operations of the XQuery language as it requires deep copy of the nodes which make up the content of the constructed element. In this ...
WWW
2006
ACM
14 years 7 months ago
2006
ACM
Applications and services that access Web data are becoming increasingly more useful and wide-spread. Current main-stream Web query languages such as XQuery, XSLT, or SPARQL, howe...