3456 search results - page 335 / 692 » Semantics in Spatial Databases |
163
click to vote
VLDB
2005
ACM
16 years 5 days ago
2005
ACM
This paper introduces a novel type of query, what we name Spatio-temporal Pattern Queries (STP). Such a query specifies a spatiotemporal pattern as a sequence of distinct spatial...
173
click to vote
DASFAA
2009
IEEE
15 years 10 months ago
2009
IEEE
Abstract. The suppression scheme is a solution for limited energy constraints in sensor networks. Temporal suppression, spatial suppression and spatio-temporal suppression are prop...
195
click to vote
GIS
2010
ACM
15 years 4 months ago
2010
ACM
Mobile intention recognition is the problem of inferring a mobile user's intentions from her behavior in geographic space. Such behavior is constrained in space and time. Cur...
309
click to vote
SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
This demo presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper, in which we can monitor moving objects in wireless sensor networks while preservi...
150
click to vote
SIGMOD
2003
ACM
16 years 6 months ago
2003
ACM
We provide a concise yet complete formal definition of the semantics of XPath 1 and summarize efficient algorithms for processing queries in this language. Our presentation is int...