no code implementations • 19 Jul 2023 • Bartosz Bednarczyk
Our primary objects of interest are ALCreg and ALCvpl, the extensions of with path expressions employing, respectively, regular and visibly-pushdown languages.
no code implementations • 12 Aug 2021 • Bartosz Bednarczyk
We present a unified approach to (both finite and unrestricted) worst-case optimal entailment of (unions of) conjunctive queries (U)CQs in the wide class of "locally-forward" description logics.
no code implementations • 29 Jun 2021 • Bartosz Bednarczyk, Sebastian Rudolph
In logic-based knowledge representation, query answering has essentially replaced mere satisfiability checking as the inferencing problem of primary interest.
no code implementations • 14 Feb 2020 • Franz Baader, Bartosz Bednarczyk, Sebastian Rudolph
On the other hand, the satisfiability problem becomes undecidable if inverse roles are added to the languages.
no code implementations • 2 Nov 2019 • Bartosz Bednarczyk
We show that the consistency problem for Statistical EL ontologies, defined by Pe{\~{n}}aloza and Potyka, is ExpTime-hard.