Formal verification of a proof procedure for the description logic ALC
Se ha publicado un artñiculo de razonamiento formalizado en Isabelle/HOL titulado Formal verification of a proof procedure for the description logic ALC.
Sus autores son
- Mohamed Chaabani (LIMOSE, Universidad de Boumerdes, Argelia),
- Mohamed Mezghiche (LIMOSE, Universidad de Boumerdes, Argelia) y
- Martin Strecker (IRIT (Institut de Recherche en Informatique de Toulouse), Francia)
El trabajo se presentó en el SCSS 2012 (Fourth International Symposium on
Symbolic Computation in Software Science), cuyas actas se publicaron la semana pasada.
Su resumen es
Description Logics (DLs) are a family of languages used for the representation and reasoning on the knowledge of an application domain, in a structured and formal manner. In order to achieve this objective, several provers, such as RACER and FaCT++, have been implemented, but these provers themselves have not been yet certified. In order to ensure the soundness of derivations in these DLs, it is necessary to formally verify the deductions applied by these reasoners. Formal methods offer powerful tools for the specification and verification of proof procedures, among them there are methods for proving properties such as soundness, completeness and termination of a proof procedure. In this paper, we present the definition of a proof procedure for the Description Logic ALC, based on a semantic tableau method. We ensure validity of our prover by proving its soundness, completeness and termination properties using Isabelle proof assistant. The proof proceeds in two phases, first by establishing these properties on an abstract level, and then by instantiating them for an implementation based on lists.
En el 2007 presentamos una formalización análoga en PVS: A formally verified prover for the ALC description logic.