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» Query Brokers for Distributed and Flexible Query Evaluation
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CORR
2012
Springer
209views Education» more  CORR 2012»
13 years 7 months ago
Aggregation in Probabilistic Databases via Knowledge Compilation
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic s...
Robert Fink, Larisa Han, Dan Olteanu
GIS
2007
ACM
16 years 27 days ago
Dynamic storage balancing in a distributed spatial index
We propose a general framework to index very large datasets of spatial data in a distributed system. Our proposal is built on the recently proposed Scalable Distributed Rtree (SD-...
Cédric du Mouza, Philippe Rigaux, Witold Li...
BMCBI
2008
121views more  BMCBI 2008»
14 years 12 months ago
OntoDas - a tool for facilitating the construction of complex queries to the Gene Ontology
Background: Ontologies such as the Gene Ontology can enable the construction of complex queries over biological information in a conceptual way, however existing systems to do thi...
Kieran O'Neill, Alexander García Castro, An...
EUROPAR
2008
Springer
15 years 1 months ago
Complex Queries for Moving Object Databases in DHT-Based Systems
Abstract. Distributed moving object database servers are a feasible solution to the scalability problem of centralized database systems. In this paper we propose a distributed inde...
Cecilia Hernández, M. Andrea Rodrígu...
HPDC
2003
IEEE
15 years 5 months ago
XenoSearch: Distributed Resource Discovery in the XenoServer Open Platform
We describe the XenoSearch system for performing expressive resource discovery searches in a distributed environment. We represent server meta-data, such as their locations and fa...
David Spence, Tim Harris