243 search results - page 6 / 49 » Optimization of multi-domain queries on the web |
EDBT
2012
ACM
11 years 10 months ago
2012
ACM
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
We have developed a system to process database queries over composed data providing web services. The queries are transformed into execution plans containing an operator that invok...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
Semantic caches, originally proposed for client-server database systems, are being recently deployed to accelerate the serving of dynamic web content by transparently caching data...
ICDCS
2002
IEEE
14 years 15 days ago
2002
IEEE
Recent technology advances have enabled mediated query processing with Internet accessible WebSources. A characteristic of WebSources is that their access costs exhibit transient ...
DEXAW
2010
IEEE
13 years 8 months ago
2010
IEEE
Given a set of keywords, we find a maximum Web query (containing the most keywords possible) that respects userdefined bounds on the number of returned hits. We assume a real-world...