Sciweavers

845 search results - page 28 / 169
» Describing and Using Query Capabilities of Heterogeneous Sou...
Sort
View
CIKM
2010
Springer
13 years 7 months ago
Query optimization for ontology-based information integration
In recent years, there has been an explosion of publicly available RDF and OWL data sources. In order to effectively and quickly answer queries in such an environment, we present...
Yingjie Li, Jeff Heflin
ICDE
2007
IEEE
114views Database» more  ICDE 2007»
14 years 3 months ago
Ranking Issues for Information Integration
Ranking of query/search answers, although introduced by early information retrieval systems, has become mandatory for internet searches. When the answers of a query or search are ...
Aditya Telang, Roochi Mishra, Sharma Chakravarthy
SIGMOD
1997
ACM
127views Database» more  SIGMOD 1997»
14 years 29 days ago
Infomaster: An Information Integration System
Infomaster is an information integration system that provides integrated access tomultiple distributed heterogeneous information sources on the Internet, thus giving the illusion ...
Michael R. Genesereth, Arthur M. Keller, Oliver M....
EDBT
2009
ACM
208views Database» more  EDBT 2009»
14 years 3 months ago
Flexible and efficient querying and ranking on hyperlinked data sources
There has been an explosion of hyperlinked data in many domains, e.g., the biological Web. Expressive query languages and effective ranking techniques are required to convert this...
Ramakrishna Varadarajan, Vagelis Hristidis, Louiqa...
ER
2004
Springer
103views Database» more  ER 2004»
14 years 2 months ago
Querying Heterogeneous Spatial Databases: Combining an Ontology with Similarity Functions
This paper uses a knowledge-based approach to querying heterogeneous spatial databases based on an ontology and conceptual and attribute similarities. The ontology, which may be in...
Mariella Gutiérrez, M. Andrea Rodríg...