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» Answering Queries Using Views
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166
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BTW
2007
Springer
191views Database» more  BTW 2007»
15 years 9 months ago
The Information Integrator: Using Semantic Technology to provide a single view to distributed data
: For the integration of data that resides in autonomous data sources Software AG uses ontologies. Data source ontologies describe the data sources themselves. Business ontologies ...
Jürgen Angele, Michael Gesmann
AAAI
1997
15 years 4 months ago
Query Optimization Using Local Completeness
We consider the problem of query plan optimization in information brokers. Information brokers are programs that facilitate access to collections of information sources by hiding ...
Oliver M. Duschka
117
Voted
DASFAA
2004
IEEE
138views Database» more  DASFAA 2004»
15 years 7 months ago
Counting Relaxed Twig Matches in a Tree
Abstract. We consider the problem of accurately estimating the number of approximate XML answers for a given query, and propose an efficient method that (1) accurately computes sel...
Dongwon Lee, Divesh Srivastava
131
Voted
PODS
2005
ACM
104views Database» more  PODS 2005»
16 years 3 months ago
Determining source contribution in integration systems
Owners of sources registered in an information integration system, which provides answers to a (potentially evolving) set of client queries, need to know their contribution to the...
Alin Deutsch, Yannis Katsis, Yannis Papakonstantin...
110
Voted
EACL
2003
ACL Anthology
15 years 4 months ago
WEBCOOP: A Cooperative Question Answering System on the Web
The main aim of this project is to explore, develop and evaluate the contribution of language technologies to the development of WEBCOOP, a system that provides intelligent Cooper...
Farah Benamara, Patrick Saint-Dizier