Results 31 to 40 of about 3,794 (164)

FaCT++ Description Logic Reasoner: System Description [PDF]

open access: yes, 2006
This is a system description of the Description Logic reasoner FaCT++. The reasoner implements a tableaux decision procedure for the well known SHOIQ description logic, with additional support for datatypes, including strings and integers. The system employs a wide range of performance enhancing optimisations, including both standard techniques (such ...
Tsarkov, Dmitry, Horrocks, Ian
openaire   +2 more sources

Non-distributive Description Logic

open access: yes, 2023
Abstract We define LE-$$\mathcal {ALC}$$, a generalization of the description logic $$\mathcal {ALC}$$ based on the propositional logic of general (i.e. not necessarily distributive) lattices, and semantically interpreted on relational structures based on formal contexts from Formal Concept Analysis (FCA).
Ineke van der Berg   +5 more
openaire   +3 more sources

On the Satisfiability and Model Checking for one Parameterized Extension of Linear-time Temporal Logic

open access: yesМоделирование и анализ информационных систем, 2021
Sequential reactive systems are computer programs or hardware devices which process the flows of input data or control signals and output the streams of instructions or responses.
Anton Romanovich Gnatenko   +1 more
doaj   +1 more source

Rich Counter-Examples for Temporal-Epistemic Logic Model Checking [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
Model checking verifies that a model of a system satisfies a given property, and otherwise produces a counter-example explaining the violation. The verified properties are formally expressed in temporal logics.
Simon Busard, Charles Pecheur
doaj   +1 more source

LTL over Description Logic Axioms [PDF]

open access: yesACM Transactions on Computational Logic, 2008
Most of the research on temporalized Description Logics (DLs) has concentrated on the case where temporal operators can occur within DL concept descriptions. In this setting, reasoning usually becomes quite hard if rigid roles, i.e., roles whose interpretation does not change over time, are available.
F. Baader, S. Ghilardi, C. Lutz
openaire   +4 more sources

Expressiveness of SHACL Features and Extensions for Full Equality and Disjointness Tests [PDF]

open access: yesLogical Methods in Computer Science
SHACL is a W3C-proposed schema language for expressing structural constraints on RDF graphs. Recent work on formalizing this language has revealed a striking relationship to description logics.
Bart Bogaerts   +2 more
doaj   +1 more source

Using formal ontology for the representation of morphological properties of anatomical structures in endoscopic surgery

open access: yesCurrent Directions in Biomedical Engineering, 2020
In this paper we present results to the problem of an adequate and compact symbolic representation of morphological features of anatomical structures that serve as surgical landmarks for automated assistance in endoscopic surgery using the General Formal
Schäfermeier Ralph   +3 more
doaj   +1 more source

Extending Unification in $\mathcal{EL}$ to Disunification: The Case of Dismatching and Local Disunification [PDF]

open access: yesLogical Methods in Computer Science, 2017
Unification in Description Logics has been introduced as a means to detect redundancies in ontologies. We try to extend the known decidability results for unification in the Description Logic $\mathcal{EL}$ to disunification since negative constraints ...
Franz Baader   +2 more
doaj   +1 more source

Reconciling description logics and rules [PDF]

open access: yesJournal of the ACM, 2008
Description logics (DLs) and rules are formalisms that emphasize different aspects of knowledge representation: whereas DLs are focused on specifying and reasoning about conceptual knowledge, rules are focused on nonmonotonic inference. Many applications, however, require features of both DLs and rules.
Boris Motik, ROSATI, Riccardo
openaire   +3 more sources

Timed Context-Free Temporal Logics [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2018
The paper is focused on temporal logics for the description of the behaviour of real-time pushdown reactive systems. The paper is motivated to bridge tractable logics specialized for expressing separately dense-time real-time properties and context-free ...
Laura Bozzelli   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy