856 search results - page 21 / 172 » Location-based Spatial Queries |
VDB
2000
14 years 7 days ago
2000
In this paper we propose a visual interface for the specification of predicates to be used in queries on spatio-temporal databases. The approach is based on a visual specification ...
SIGMOD
2008
ACM
14 years 11 months ago
2008
ACM
We present HERMES, a prototype system based on a powerful query language for trajectory databases, which enables the support of aggregative Location-Based Services (LBS). The key ...
OTM
2005
Springer
14 years 4 months ago
2005
Springer
Ontologies play a key role in Semantic Web research. A common use of ontologies in Semantic Web is to enrich the current Web resources with some well-defined meaning to enhance th...
VLDB
2007
ACM
14 years 11 months ago
2007
ACM
Research in modeling and querying spatial data has primarily focused on traditional "crisp" spatial objects with exact location and spatial extent. More recent work, how...
SIGMOD
2005
ACM
14 years 11 months ago
2005
ACM
This paper proposes a generic framework for monitoring continuous spatial queries over moving objects. The framework distinguishes itself from existing work by being the first to ...