Probabilistic Assumption-Based Reasoning
  The classical propositional assumption-based model is extended to incorporate
probabilities for the assumptions. Then it is placed into the framework of
evidence theory. Several authors like Laskey, Lehner (1989) and Provan (1990)
already proposed a similar point of view, but the first paper is not as much
concerned with mathematical foundations, and Provan's paper develops into a
different direction. Here we thoroughly develop and present the mathematical
foundations of this theory, together with computational methods adapted from
Reiter, De Kleer (1987) and Inoue (1992). Finally, recently proposed techniques
for computing degrees of support are presented.
