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On Principles and Problems of Defeasible Inheritance

Karl Schlechta; David Makinson
DFKI, DFKI Research Reports (RR), Vol. 92-59, 1992.


We have two aims here: First, to discuss some basic principles underlying different approaches to Defeasible Inheritance; second, to examine problems of these approaches as they already appear in quite simple diagrams. We build upon, but go beyond, the discussion in the joint paper of Touretzky, Horty, and Thomason: A Clash of Intuitions.