An Implementation of a Free-Variable Tableaux for KLM Preferential Logic P of Nonmonotonic Reasoning: The Theorem Prover FreeP 1.0

Authors:
Laura Giordano;Valentina Gliozzi;Nicola Olivetti;Gian Luca Pozzato
Affiliations:
Dip. di Informatica - Univ. Piemonte O. "A. Avogadro",;Dip. di Informatica - Università di Torino,;LSIS-UMR CNRS 6168 Univ. "P. Cézanne",;Dip. di Informatica - Università di Torino,
Venue:
AI*IA '07 Proceedings of the 10th Congress of the Italian Association for Artificial Intelligence on AI*IA 2007: Artificial Intelligence and Human-Oriented Computing
Year:
2007

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Abstract

We present FreeP 1.0, a theorem prover for the KLM preferential logic Pof nonmonotonic reasoning. FreeP 1.0is a SICStus Prolog implementation of a free-variables, labelled tableau calculus for P, obtained by introducing suitable modalities to interpret conditional assertions. The performances of FreeP 1.0are promising. FreeP 1.0can be downloaded at http://www.di.unito.it/~pozzato/FreeP1.0.