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DLOG
2001
14 years 11 months ago
Optimizing Reasoning in Description Logics with Qualified Number Restrictions
In this extended abstract an optimization technique, the so-called signature calculus, for reasoning with number restrictions in description logics is investigated. The calculus i...
Volker Haarslev, Ralf Möller
DLOG
2001
14 years 11 months ago
Combining Tableaux and Algebraic Methods for Reasoning with Qualified Number Restrictions
This paper investigates an optimization technique for reasoning with qualified number restrictions in the description logic ALCQHR+ . We present a hybrid architecture where a stan...
Volker Haarslev, Martina Timmann, Ralf Möller
KI
2006
Springer
14 years 9 months ago
A New n-ary Existential Quantifier in Description Logics
Motivated by a chemical process engineering application, we introduce a new concept constructor in Description Logics (DLs), an n-ary variant of the existential restriction constr...
DLOG
2008
14 years 12 months ago
A Hybrid Tableau Algorithm for ALCQ
Abstract. We propose an approach for extending a tableau-based satisfiability algorithm by an arithmetic component. The result is a hybrid satisfiability algorithm for the Descript...
Jocelyne Faddoul, Nasim Farsinia, Volker Haarslev,...
AI
1999
Springer
14 years 9 months ago
Modal Logics, Description Logics and Arithmetic Reasoning
Forthcoming in the Journal of Aritificial Intelligence We introduce mathematical programming and atomic decomposition as the basic modal (T-Box) inference techniques for a large c...
Hans Jürgen Ohlbach, Jana Koehler