427 search results - page 14 / 86 » Conjunctive Query Answering in EL using a Database System |
CIKM
2011
Springer
12 years 8 months ago
2011
Springer
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
ICDT
2007
ACM
14 years 2 months ago
2007
ACM
In this paper, we introduce preferential regular path queries. These are regular path queries whose symbols are annotated with preference weights for “scaling” up or down the i...
SIGMOD
2007
ACM
14 years 9 months ago
2007
ACM
The primary goal of data stream research is to develop space and time efficient solutions for answering continuous online summarization queries. Research efforts over the last dec...
BTW
2009
Springer
14 years 1 months ago
2009
Springer
: Cost-based optimizers in relational databases make use of data statistics to estimate intermediate result cardinalities. Those cardinalities are needed to estimate access plan co...
ICDT
2003
ACM
14 years 1 months ago
2003
ACM
All the languages for querying semistructured data and the web use as an integral part regular expressions. Based on practical observations, finding the paths that satisfy those r...