Two views of beliefi Belief as generalized robability and belief as evidence
Joseph Yehuda Halpern, Ronald Fagin · 1990
Belief functions are mathematical objects defined to satisfy three axioms that look somewhat similar to the axioms defining probability functions. We argue that there are (at least) two useful and quite different ways of understanding belief functions. The first is as a generalized probability function (which technically corresponds to the lower envelope or im the claim of this paper is that these problems can be explained as a consequence of confounding these two views of belief functions.