90 search results - page 12 / 18 » Continuous obstructed nearest neighbor queries in spatial da... |
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we propose an approach that enables mobile clients to determine the validity of previous queries based on their current locations. In order to make this possible, th...
SIGMOD
2010
ACM
14 years 15 days ago
2010
ACM
The K-Nearest Neighbor search (kNN) problem has been investigated extensively in the past due to its broad range of applications. In this paper we study this problem in the contex...
SAC
2009
ACM
14 years 2 months ago
2009
ACM
We present a GPU-based algorithm for computing discretized distance functions on road networks. As applications, we provide algorithms for computing discrete Order-k Network Voron...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Abstract-- This work presents a novel index structure, MHRtree, for efficiently answering approximate string match queries in large spatial databases. The MHR-tree is based on the ...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
Many applications require finding objects closest to a specified location that contains a set of keywords. For example, online yellow pages allow users to specify an address and a ...