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» Parallelizing query optimization
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114
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DKE
2006
123views more  DKE 2006»
15 years 23 days ago
Cost models for distance joins queries using R-trees
The K-Closest-Pairs Query (K-CPQ), a type of distance join in spatial databases, discovers the K pairs of objects formed from two different datasets with the K smallest distances....
Antonio Corral, Yannis Manolopoulos, Yannis Theodo...
106
Voted
IS
2007
15 years 20 days ago
Efficient processing of XPath queries using indexes
: A number of indexing techniques have been proposed in recent times for optimizing the queries on XML and other semistructured data models. Most of the semistructured models use t...
Sanjay Kumar Madria, Yan Chen, Kalpdrum Passi, Sou...
83
Voted
KDD
2005
ACM
104views Data Mining» more  KDD 2005»
16 years 1 months ago
Mining tree queries in a graph
We present an algorithm for mining tree-shaped patterns in a large graph. Novel about our class of patterns is that they can contain constants, and can contain existential nodes w...
Bart Goethals, Eveline Hoekx, Jan Van den Bussche
PODS
2005
ACM
128views Database» more  PODS 2005»
16 years 26 days ago
Operator placement for in-network stream query processing
In sensor networks, data acquisition frequently takes place at lowcapability devices. The acquired data is then transmitted through a hierarchy of nodes having progressively incre...
Utkarsh Srivastava, Kamesh Munagala, Jennifer Wido...
120
Voted
SSDBM
2002
IEEE
109views Database» more  SSDBM 2002»
15 years 5 months ago
Query Processing with Description Logic Ontologies Over Object-Wrapped Databases
This paper presents an approach to answering queries over an ontology modelled using a description logic. The ontology acts as a global schema, providing a declarative description...
Martin Peim, Enrico Franconi, Norman W. Paton, Car...