412 search results - page 18 / 83 » Aggregate queries over ontologies |
ICDE
2007
IEEE
14 years 4 months ago
2007
IEEE
Moving objects databases (MOD) have been receiving increasing attention from the database community in recent years, mainly due to the wide variety of applications that technology...
ICDT
2001
ACM
14 years 2 months ago
2001
ACM
In fast OLAP applications it is often advantageous to provide approximate answers to range queries in order to achieve very high performances. A possible solution is to inquire sum...
ICWS
2009
IEEE
14 years 7 months ago
2009
IEEE
Environments in which Web service compositions (WSC) operate are often dynamic. We address the problem of which service to query for up-to-date information in order to adapt a hie...
SIS
2007
13 years 11 months ago
2007
Ontologies represent knowledge in a particular area. Intellectual Property (IP) Entities lifecycle lacks any explicit standard representation, and a semantic expression of its proc...
ICC
2008
IEEE
14 years 4 months ago
2008
IEEE
— In large Wireless Sensor Networks (WSNs), each hop might incur varying delays due to medium access contention, transmission and computation delays. Fast and efficient query re...