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ESWS
2004
Springer
13 years 11 months ago
Active Ontologies for Data Source Queries
Abstract. In this paper we describe the work that was done in the Corporate Ontology Grid (COG) project on the querying of existing legacy data sources from the automotive industry...
Jos de Bruijn, Holger Lausen
ICDM
2002
IEEE
152views Data Mining» more  ICDM 2002»
14 years 11 days ago
Concept Tree Based Clustering Visualization with Shaded Similarity Matrices
One of the problems with existing clustering methods is that the interpretation of clusters may be difficult. Two different approaches have been used to solve this problem: conce...
Jun Wang, Bei Yu, Les Gasser
SEMWEB
2009
Springer
14 years 2 months ago
Decidable Order-Sorted Logic Programming for Ontologies and Rules with Argument Restructuring
Abstract. This paper presents a decidable fragment for combining ontologies and rules in order-sorted logic programming. We describe ordersorted logic programming with sort, predic...
Ken Kaneiwa, Philip H. P. Nguyen
KCAP
2009
ACM
14 years 3 days ago
Cross ontology query answering on the semantic web: an initial evaluation
PowerAqua1 is a Question Answering system, which takes as input a natural language query and is able to return answers drawn from relevant semantic resources found anywhere on the...
Vanessa Lopez, Victoria S. Uren, Marta Sabou, Enri...
ER
2003
Springer
129views Database» more  ER 2003»
14 years 20 days ago
Querying Heterogeneous XML Sources through a Conceptual Schema
XML is a widespread W3C standard used by several kinds of applications for data representation and exchange over the web. In the context of a system that provides semantic integrat...
Sandro Daniel Camillo, Carlos A. Heuser, Ronaldo d...