209 search results - page 38 / 42 » Derived Data Update in Semantic Databases |
EDBT
2000
ACM
13 years 11 months ago
2000
ACM
Warehouse view self-maintenance refers to maintaining materialized views at a data warehouse without accessing source data. Self-maintenance has been studied for nontemporal views...
SIGMOD
1997
ACM
13 years 11 months ago
1997
ACM
Materialized views and view maintenance are becoming increasingly important in practice. In order to satisfy different data currency and performance requirements, a number of view...
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
The modeling of high level semantic events from low level sensor signals is important in order to understand distributed phenomena. For such content-modeling purposes, transformat...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
We study the problem of querying relational data embedded in XML. Relational data can be represented by various tree structures in XML. However, current XML query methods, such as...
CVPR
2008
IEEE
14 years 9 months ago
2008
IEEE
This paper presents an approach to extracting and using semantic layers from low altitude aerial videos for scene understanding and object tracking. The input video is captured by...