300 search results - page 39 / 60 » Constrained Nearest Neighbor Queries |
ICMCS
1999
IEEE
13 years 12 months ago
1999
IEEE
In this paper, we propose an original indexing by shape of image databases based on extended grid files. We first introduce a recently developed shape description method and tailo...
GEOINFORMATICA
2006
13 years 7 months ago
2006
Existing estimation approaches for spatial databases often rely on the assumption that data distribution in a small region is uniform, which seldom holds in practice. Moreover, the...
GEOINFORMATICA
2006
13 years 7 months ago
2006
Peer-to-Peer (P2P) systems are known to provide excellent scalability in a networked environment. One peer is introduced to the system by each participant. However current P2P app...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
Spatial queries for extracting data from wireless sensor networks are important for many applications, such as environmental monitoring and military surveillance. One such query i...
VLDB
2005
ACM
14 years 1 months 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...