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» Hybrid Logics and Ontology Languages
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JSC
2010
135views more  JSC 2010»
14 years 10 months ago
Deciding inseparability and conservative extensions in the description logic EL
We study the problem of deciding whether two ontologies are inseparable w.r.t. a signature Σ, i.e., whether they have the same consequences in the signature Σ. A special case is...
Carsten Lutz, Frank Wolter
ACL
1989
15 years 1 months ago
A Hybrid Approach to Representation in the Janus Natural Language Processor
In BBN's natural language understanding and generation system (Janus), we have used a hybrid approach to representation, employing an intensional logic for the representation...
Ralph M. Weischedel
SEMWIKI
2008
168views Data Mining» more  SEMWIKI 2008»
15 years 1 months ago
AceWiki: Collaborative Ontology Management in Controlled Natural Language
AceWiki is a prototype that shows how a semantic wiki using controlled natural language -- Attempto Controlled English (ACE) in our case -- can make ontology management easy for ev...
Tobias Kuhn
HIS
2009
14 years 9 months ago
Implementing and Evaluating a Rule-Based Approach to Querying Regular EL+ Ontologies
Recent years have witnessed the wide recognition of the importance of ontology and rule in the AI research. In this paper, we report our implementation and evaluation of a rule-ba...
Yuting Zhao, Jeff Z. Pan, Yuan Ren
AGILE
2007
Springer
184views GIS» more  AGILE 2007»
15 years 6 months ago
Towards Spatial Reasoning in the Semantic Web: A Hybrid Knowledge Representation System Architecture
Environmental databases store a wide variety of data from heterogeneous sources which are described with domain-specific terminologies and refer to distinct locations. In order to ...
Rolf Grütter, Bettina Bauer-Messmer