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Conference Paper

Phased labeled logics of conditional goals

MPS-Authors

van der Torre,  Leendert W. N.
Max Planck Society;

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Citation

van der Torre, L. W. N. (1998). Phased labeled logics of conditional goals. In J. Dix, L. Fariñas del Cerro, & U. Furbach (Eds.), Proceedings of the 6th European Workshop on Logics in AI: Logics in Artificial Intelligence (JELIA-98) (pp. 92-106). Berlin, Germany: Springer.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-386C-8
Abstract
In this paper we introduce phased labeled logics of conditional goals. Labels are used to impose restrictions on the proof theory of the logic. The restriction discussed in this paper is that a proof rule can be blocked in a derivation due to the fact that another proof rule has been applied earlier in the derivation. We call a set of proof rules that can be applied in any order a phase in the proof theory. We propose a one-phase logic of goals containing four proof rules, and we show that it is equivalent to a four-phase logic of goals in which each phase contains exactly one proof rule. The proof theory of the four-phase logic of goals is much more efficient, because other orderings no longer have to be considered.