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» Reasoning with Expressive Description Logics: Theory and Pra...
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TIME
2007
IEEE
16 years 11 days ago
Temporalising Tractable Description Logics
It is known that for temporal languages, such as firstorder LT L, reasoning about constant (time-independent) relations is almost always undecidable. This applies to temporal des...
Alessandro Artale, Roman Kontchakov, Carsten Lutz,...
ICTAI
2003
IEEE
15 years 11 months ago
Ontology-Based Medical Image Annotation with Description Logics
The interpretation of medical evidence is normally presented in terms of a controlled, but diversely expressed specialist vocabulary and natural language phrases. Such informally ...
Bo Hu, Srinandan Dasmahapatra, Paul H. Lewis, Nige...
DLOG
2003
15 years 7 months ago
Restricted Role-value-maps in a Description Logic with Existential Restrictions and Terminological Cycles
In a previous paper we have investigated subsumption in the presence of terminological cycles for the description logic EL, which allows conjunctions, existential restrictions, an...
Franz Baader
IAT
2008
IEEE
16 years 16 days ago
Extending a Defeasible Reasoner with Modal and Deontic Logic Operators
Defeasible logic is a non-monotonic formalism that deals with incomplete and conflicting information. Modal logic deals with necessity and possibility, exhibiting defeasibility; t...
Efstratios Kontopoulos, Nick Bassiliades, Guido Go...
FUIN
2010
83views more  FUIN 2010»
15 years 3 months ago
Expressing Cardinality Quantifiers in Monadic Second-Order Logic over Trees
We study an extension of monadic second-order logic of order with the uncountability quantifier "there exist uncountably many sets". We prove that, over the class of fini...
Vince Bárány, Lukasz Kaiser, Alexand...