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DLOG
2008
13 years 9 months ago
Taming the Infinite Chase: Query Answering under Expressive Relational Constraints
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
Andrea Calì, Georg Gottlob, Michael Kifer
FOIKS
2010
Springer
14 years 2 months ago
Theoretical Foundations for Enabling a Web of Knowledge
The current web is a web of linked pages. Frustrated users search for facts by guessing which keywords or keyword phrases might lead them to pages where they can find facts. Can w...
David W. Embley, Andrew Zitzelberger
DKE
1999
118views more  DKE 1999»
13 years 7 months ago
Designing Data Warehouses
A Data Warehouse DW is a database that collects and stores data from multiple remote and heterogeneous information sources. When a query is posed, it is evaluated locally, without...
Dimitri Theodoratos, Timos K. Sellis
EDBTW
2004
Springer
14 years 24 days ago
Index-Based Keyword Search in Mediator Systems
Many users and applications require the integration of semi-structured data from autonomous, heterogeneous Web sources. Over the last years mediator systems have emerged that use d...
Ingolf Geist
ICDE
2009
IEEE
214views Database» more  ICDE 2009»
14 years 9 months ago
Ranking with Uncertain Scores
Large databases with uncertain information are becoming more common in many applications including data integration, location tracking, and Web search. In these applications, ranki...
Mohamed A. Soliman, Ihab F. Ilyas