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DLOG
1996
13 years 5 months ago
Number Restrictions on Complex Roles in Description Logics: A Preliminary Report
Number restrictions are concept constructors that are available in almost all implemented description logic systems. However, even though there has lately been considerable effort...
Franz Baader, Ulrike Sattler
DLOG
2001
13 years 5 months ago
On Expressive Number Restrictions in Description Logics
We consider expressive Description Logics (ALCN) allowing for number restrictions on complex roles built with combinations of role constructors. In particular, we are mainly inter...
Fabio Grandi
KI
2006
Springer
13 years 4 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...
IJCAI
2003
13 years 5 months ago
Decidability of SHIQ with Complex Role Inclusion Axioms
Motivated by medical terminology applications, we investigate the decidability of the well known expressive DL, SHIQ, extended with role inclusion axioms (RIAs) of the form R ◦ ...
Ian Horrocks, Ulrike Sattler
IJCAI
2003
13 years 5 months ago
On the Undecidability of Description and Dynamic Logics with Recursion and Counting
The evolution of Description Logics (DLs) and Propositional Dynamic Logics produced a hierar­ chy of decidable logics with multiple maximal el­ ements. It would be desirable to ...
Piero A. Bonatti