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ICDE
2012
IEEE
196views Database» more  ICDE 2012»
7 years 8 months ago
Scalable Multi-query Optimization for SPARQL
Abstract—This paper revisits the classical problem of multiquery optimization in the context of RDF/SPARQL. We show that the techniques developed for relational and semi-structur...
Wangchao Le, Anastasios Kementsietsidis, Songyun D...
PVLDB
2010
146views more  PVLDB 2010»
9 years 13 days ago
Generating Efficient Execution Plans for Vertically Partitioned XML Databases
Experience with relational systems has shown that distribution is an effective way of improving the scalability of query evaluation. In this paper, we show how distributed query e...
Patrick Kling, M. Tamer Özsu, Khuzaima Daudje...
WECWIS
2003
IEEE
102views ECommerce» more  WECWIS 2003»
9 years 11 months ago
FUSION: A System Allowing Dynamic Web Service Composition and Automatic Execution
Service portals are systems which expose a bundle of web services to the user, allowing the specification and subsequent execution of complex tasks defined over these individual...
Debra E. VanderMeer, Anindya Datta, Kaushik Dutta,...
DMSN
2009
ACM
10 years 5 days ago
Validated cost models for sensor network queries
Generating a good execution plan for a declarative query has long been a central problem in data management research. With the rise in interest in wireless sensor networks (WSNs) ...
Christian Y. A. Brenninkmeijer, Ixent Galpin, Alva...
ICDE
2009
IEEE
155views Database» more  ICDE 2009»
10 years 14 days ago
Join Optimization of Information Extraction Output: Quality Matters!
— Information extraction (IE) systems are trained to extract specific relations from text databases. Real-world applications often require that the output of multiple IE systems...
Alpa Jain, Panagiotis G. Ipeirotis, AnHai Doan, Lu...
SOSP
2009
ACM
10 years 2 months ago
Distributed aggregation for data-parallel computing: interfaces and implementations
Data-intensive applications are increasingly designed to execute on large computing clusters. Grouped aggregation is a core primitive of many distributed programming models, and i...
Yuan Yu, Pradeep Kumar Gunda, Michael Isard
SIGMOD
2006
ACM
232views Database» more  SIGMOD 2006»
10 years 5 months ago
To search or to crawl?: towards a query optimizer for text-centric tasks
Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, information extraction applications derive...
Panagiotis G. Ipeirotis, Eugene Agichtein, Pranay ...
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