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» Answering Queries using Humans, Algorithms and Databases
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GIS
1995
ACM
13 years 11 months ago
A Window Retrieval Algorithm for Spatial Databases Using Quadtrees
An algorithm is presented to answer window queries in a quadtree-based spatial database environment by retrieving the covering blocks in the underlying spatial database. It works ...
Walid G. Aref, Hanan Samet
ICDE
2008
IEEE
162views Database» more  ICDE 2008»
14 years 8 months ago
Querying Complex Spatio-Temporal Sequences in Human Motion Databases
Content-based retrieval of spatio-temporal patterns from human motion databases is inherently nontrivial since finding effective distance measures for such data is difficult. These...
Yueguo Chen, Shouxu Jiang, Beng Chin Ooi, Anthony ...
CIKM
2008
Springer
13 years 9 months ago
Estimating the number of answers with guarantees for structured queries in p2p databases
Structured P2P overlays supporting standard database functionalities are a popular choice for building large-scale distributed data management systems. In such systems, estimating...
Marcel Karnstedt, Kai-Uwe Sattler, Michael Ha&szli...
CIKM
2010
Springer
13 years 6 months ago
A hierarchical approach to reachability query answering in very large graph databases
The cost of reachability query computation using traditional algorithms such as depth first search or transitive closure has been found to be prohibitive and unacceptable in mass...
Saikat K. Dey, Hasan M. Jamil
VLDB
1997
ACM
94views Database» more  VLDB 1997»
13 years 11 months ago
Describing and Using Query Capabilities of Heterogeneous Sources
Information integration systems have to cope with the different and limited query interfaces of the underlying information sources. First, the integration systems need description...
Vasilis Vassalos, Yannis Papakonstantinou