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» Extracting Ontologies from Relational Databases
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SSD
2009
Springer
128views Database» more  SSD 2009»
15 years 2 months ago
TOQL: Temporal Ontology Querying Language
We introduce TOQL, a query language for querying time information in ontologies. TOQL is a high level query language that handles ontologies almost like relational databases. Queri...
Evdoxios Baratis, Euripides G. M. Petrakis, Sotiri...
CIKM
2010
Springer
14 years 8 months ago
Components for information extraction: ontology-based information extractors and generic platforms
Information Extraction (IE) has existed as a field for several decades and has produced some impressive systems in the recent past. Despite its success, widespread usage and comm...
Daya C. Wimalasuriya, Dejing Dou
PVLDB
2010
115views more  PVLDB 2010»
14 years 8 months ago
ROXXI: Reviving witness dOcuments to eXplore eXtracted Information
In recent years, there has been considerable research on information extraction and constructing RDF knowledge bases. In general, the goal is to extract all relevant information f...
Shady Elbassuoni, Katja Hose, Steffen Metzger, Ral...
TSMC
2008
136views more  TSMC 2008»
14 years 9 months ago
Learning Relational Descriptions of Differentially Expressed Gene Groups
Abstract-- This paper presents a method that uses gene ontologies, together with the paradigm of relational subgroup discovery, to find compactly described groups of genes differen...
Igor Trajkovski, Filip Zelezný, Nada Lavrac...
ICDIM
2006
IEEE
15 years 4 months ago
Creating an Historical Archive Ontology: Guidelines and Evaluation
Ontologies have been proven invaluable tools both for the semantic web and for personal information management. In the context of a historical archive an ontology may provide mean...
Elena Torou, Akrivi Katifori, Costas Vassilakis, G...