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Journal Article

A Multi-Dimensional Terminological Knowledge Representation Language

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons44050

Baader,  Franz
Programming Logics, MPI for Informatics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons45140

Ohlbach,  Hans Jürgen
Programming Logics, MPI for Informatics, Max Planck Society;

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Baader, F., & Ohlbach, H. J. (1995). A Multi-Dimensional Terminological Knowledge Representation Language. Journal of Applied Non-Classical Logics, 5(2), 153-198.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-ACE3-5
Abstract
An extension of the concept description language \alc\ used in {\sc kl-one}-like terminological reasoning is presented. The extension includes multi--modal operators that can either stand for the usual role quantifications or for modalities such as belief, time etc. The modal operators can be used at all levels of the concept terms, and they can be used to modify both concepts and roles. This is an instance of a new kind of combination of modal logics where the modal operators of one logic may operate directly on the operators of the other logic. Different versions of this logic are investigated and various results about decidability and undecidability are presented. The main problem, however, decidability of the basic version of the logic, remains open