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» Query Optimization in an OODBMS
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GIS
2006
ACM
16 years 4 months ago
Exploiting a page-level upper bound for multi-type nearest neighbor queries
Given a query point and a collection of spatial features, a multi-type nearest neighbor (MTNN) query finds the shortest tour for the query point such that only one instance of eac...
Xiaobin Ma, Shashi Shekhar, Hui Xiong, Pusheng Zha...
VLDB
2002
ACM
133views Database» more  VLDB 2002»
16 years 4 months ago
Tree pattern query minimization
: Purpose ? Tree pattern is at the core of XML queries. The tree patterns in XML queries typically contain redundancies, especially when broad integrity constraints (ICs) are prese...
Sihem Amer-Yahia, SungRan Cho, Laks V. S. Lakshman...
MDBIS
2003
132views Database» more  MDBIS 2003»
15 years 5 months ago
Cache-supported Processing of Queries in Mobile DBS
: The usage of mobile equipment like PDAs, mobile phones, Tablet PCs or laptops is already common in our current information society. Typically, mobile information systems work in ...
Hagen Höpfner, Kai-Uwe Sattler
MASS
2010
186views Communications» more  MASS 2010»
15 years 1 months ago
VAN: Vehicle-assisted shortest-time path navigation
Traffic congestion is a very serious problem in large cities. With the number of vehicles increasing rapidly, especially in cities whose economy is booming, the situation is gettin...
Wenping Chen, Sencun Zhu, Deying Li
ICC
2009
IEEE
150views Communications» more  ICC 2009»
15 years 1 months ago
Efficient Resource Discovery in Mobile Ad Hoc Networks
Abstract--The highly dynamic nature of infrastructureless adhoc networks poses new challenges during resource discovery. In this paper, we propose a novel algorithm for resource di...
Ravi Thanawala, Jie Wu, Avinash Srinivasan