2043 search results - page 80 / 409 » The Limits of Querying Ontologies |
PODS
1999
ACM
14 years 1 months ago
1999
ACM
Query optimizers rely on fast, high-quality estimates of result sizes in order to select between various join plans. Selfjoin sizes of relations provide bounds on the join size of...
WSKS
2009
Springer
14 years 1 months ago
2009
Springer
We propose a framework that supports a federated environment based on a Mediator Architecture in the Semantic Web. The Mediator supports mappings between the OWL Ontology of the Me...
STOC
2007
ACM
14 years 9 months ago
2007
ACM
This work is at the intersection of two lines of research. One line, initiated by Dinur and Nissim, investigates the price, in accuracy, of protecting privacy in a statistical dat...
BXML
2003
13 years 10 months ago
2003
: The integration of heterogenous web sources is still a big challenge. One approach to deal with integration problems is the usage of domain knowledge in form of vocabularies or o...
DLOG
2003
13 years 10 months ago
2003
In this paper, we introduce RICE, a graphical application for interacting with the description logic inference server Racer. Comparing RICE with OilEd, we address the problem of v...