A method for determination of evidential weighting factors in a medical expert system

  • D. L. Hudson
  • M. E. Cohen
Reasoning Techniques Under Uncertainty
Part of the Lecture Notes in Computer Science book series (LNCS, volume 313)


The necessity of dealing with uncertainty in expert systems has been recognized since the time of the first development of these systems. Initially, ad hoc techniques were incorporated to deal with these problems. At the same time, approximate reasoning technology was developing as a separate field. It is only recently that techniques from these two fields have been combined. EMERGE, a medical expert system developed by the authors, has been modified by replacing the original ad hoc approach to reasoning with uncertainty with techniques from approximate reasoning based on work by Yager. In this paper, a method is presented for obtaining values for evidential weighting factors.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • D. L. Hudson
    • 1
  • M. E. Cohen
    • 2
  1. 1.Section on Medical Information ScienceUniversity of California, San FranciscoFresnoU.S.A.
  2. 2.Department of MathematicsCalifornia State University, FresnoFresnoU.S.A.

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