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» Confidence-Aware Join Algorithms
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GIS
1999
ACM
14 years 3 months ago
Improved Bulk-Loading Algorithms for Quadtrees
Spatial indexes, such as the PMR quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints, especially when the queries involv...
Gísli R. Hjaltason, Hanan Samet
VLDB
1994
ACM
153views Database» more  VLDB 1994»
14 years 3 months ago
Optimization Algorithms for Exploiting the Parallelism-Communication Tradeoff in Pipelined Parallelism
We address the problem of finding parallel plans for SQL queries using the two-phase approach of join ordering followed by parallelization. We focus on the parallelization phase a...
Waqar Hasan, Rajeev Motwani
AINA
2004
IEEE
14 years 2 months ago
A Time and Distance - Based Multicast Algorithm for IPv6 Mobile Networks
IP multicasting has naturally been considered the ideal technique to be used with multimedia communications. Unfortunately, current multicast protocols do not consider the dynamic...
Wu-Hsiao Hsu, Bin-Hau Lee, Ming-Han Liu, Bor-Yeh S...
VLDB
1998
ACM
120views Database» more  VLDB 1998»
14 years 3 months ago
Algorithms for Querying by Spatial Structure
: Structural queries constitute a special form of content-basedretrieval where the user specifiesa set of spatial constraints among query variables and asks for all configurations ...
Dimitris Papadias, Nikos Mamoulis, Vasilis Delis
PODS
2008
ACM
123views Database» more  PODS 2008»
14 years 11 months ago
Evaluating rank joins with optimal cost
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...
Karl Schnaitter, Neoklis Polyzotis