The paper deals with the mathematical simulation of empirical learning in m
edical diagnostics. Such a simulation essentially amounts to solving both t
he problem of how to acquire, represent, and objectify the smallest typical
units of diagnostic knowledge and the problem of how to identify the subje
ct-specific situations in which diagnostic learning may take place at all.
A solution to the first question will be provided by using so called fuzzy
probabilities as a model. The second problem is solved by adequately formal
izing that kind of knowledge as it is found in standard sources like textbo
oks for instance. (C) 2001 Elsevier Science Inc. All rights reserved.