a logic for reasoning with rules and reasons
Jaap Hage and Bart Verheij
The main claim of this paper is that reasoning with rules, especially rules
of law, is different from reasoning with statements that are true or false.
This difference is, amongst others, reflected in the defeasibility of arguments
in which rules play a role. Reason-Based Logic is a logic that has special
facilities for dealing with rules and with reasons based on rules. In particular
it allows arguments in which conclusions are derived by 'weighing' the
reasons that plead for and against them. In this article we illustrate
some characteristics of reasoning with rules, and show how Reason-Based
Logic deals with these characteristics. The article is concluded with some
general considerations concerning Reason-Based Logic, and a comparison
with some other logics for defeasible reasoning.
Hage, Jaap and Verheij, Bart (1994). Reason-based Logic: a logic for
reasoning with rules and reasons. Law, Computers and Artificial Intelligence,
Vol. 3, No. 2/3, pp. 171-209. Also published as report SKBS/B3.A/94-10.