266 search results - page 7 / 54 » On first-order topological queries |
DEDUCTIVE
1994
13 years 8 months ago
1994
Non-deterministic operators are needed in First-Order relational languages and Datalog to extend the expressive power of such languages and support efficient formulations of lowco...
ISMIS
1994
Springer
13 years 11 months ago
1994
Springer
We assume that safety of information stored in a database depends on the reliability of the agents who have performed the insertions in the database. We present a logic S to repres...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...
RECOMB
2009
Springer
14 years 8 months ago
2009
Springer
MIDDLEWARE
2005
Springer
14 years 29 days ago
2005
Springer
Unstructured peer-to-peer networks are frequently used as the overlay in various middleware toolkits for emerging applications, from content discovery to query result caching to di...