Piatti, Alberto; Zaffalon, Marco; Trojani, Fabio; Hutter, Marcus
In this paper, we consider the coherent theory of (epistemic) uncertainty of Walley, in which beliefs are represented through sets of probability distributions, and we focus on the problem of modeling prior ignorance about a categorical random variable. In this setting, it is a known result that a state of prior ignorance is not compatible with learning. To overcome this problem, another state of beliefs, called near-ignorance, has been proposed. Near-ignorance resembles ignorance very closely,...[Show more]
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