Uncertainty, learning, and the 'problem' of dilation


Imprecise probabilism, which holds that rational belief/credence is permissibly represented by a set of probability functions, apparently suffers from a problem known as dilation. We explore whether this problem can be avoided or mitigated by one of the following strategies: a) modifying the rule by which the credal state is updated, b) restricting the domain of reasonable credal states to those that preclude dilation.

Erkenntnis, 79:6 1287–1303