Possibilistic qualification and default rules

  • Ronald R. Yager
Section I Preliminary Papers
Part of the Lecture Notes in Computer Science book series (LNCS, volume 286)


We discuss the problems involved in representing default knowledge. We suggest that default knowledge can be captured by using possibility qualified statements. We investigate the representation of possibility qualified statements via the theory of approximate reasoning. We apply our representation scheme to some examples. In particular, we show that this scheme gives reasonable results for a knowledge base in which we have "normally Quakers are pacifists" and "normally republicans are not pacifists".


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Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • Ronald R. Yager
    • 1
  1. 1.Machine Intelligence InstituteIona CollegeNew Rochelle

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