90 search results - page 15 / 18 » Continuous obstructed nearest neighbor queries in spatial da... |
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...
ICDE
2000
IEEE
14 years 9 months ago
2000
IEEE
Nearest neighbor queries are important in many settings, including spatial databases (Find the k closest cities) and multimedia databases (Find the k most similar images). Previou...
ICIP
2004
IEEE
14 years 9 months ago
2004
IEEE
In many image or video retrieval systems, the search of similar objects in the database includes a spatial access method to a multidimensional feature space. This step is generall...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
In a mobile service scenario, users query a server for nearby points of interest but they may not want to disclose their locations to the service. Intuitively, location privacy may...
EDBT
2009
ACM
13 years 11 months ago
2009
ACM
In emerging applications such as location-based services, sensor monitoring and biological management systems, the values of the database items are naturally imprecise. For these ...