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Argumentation

, Volume 20, Issue 2, pp 227–236 | Cite as

Monotonicity and Reasoning with Exceptions

  • Frank Zenker
Article
  • 56 Downloads

Abstract

A proposal by Ferguson [2003, Argumentation 17, 335–346] for a fully monotonic argument form allowing for the expression of defeasible generalizations is critically examined and rejected as a general solution. It is argued that (i) his proposal reaches less than the default-logician’s solution allows, e.g., the monotonously derived conclusion is one-sided and itself not defeasible. (ii) when applied to a suitable example, his proposal derives the wrong conclusion. Unsuccessful remedies are discussed.

Keywords

defeasible reasoning default logic exceptions monotonicity 

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References

  1. Ferguson K. G. (2003) Monotonicity in Practical Reasoning. Argumentation 17: 335–346CrossRefGoogle Scholar
  2. Kyburg H. E. Jr, Teng C. M. (2001) Uncertain Inference. Cambridge, CUPGoogle Scholar
  3. Reiter R.: 1980, A Logic for Default Reasoning. Artificial Intelligence 13, 81–132Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Department of PhilosophyUniversity of HamburgHamburgGermany

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