Appendix D of this report informed a lot of work we did on this, and in decreasing order of usefulness, it lists Shafer’s “Belief functions,” Possibility Theory, and the “Dezert-Smarandache Theory of Plausible and Paradoxical Reasoning.” I’d add “Fuzzy Sets” / “Fuzzy Logic.”
(Note that these are all formalisms in academic writing that predate and anticipate most of what you’ve listed above, but are harder ways to understand it. Except DST, which is hard to justify except as trying to be exhaustive about what people might want to think about non-probability belief.)
Appendix D of this report informed a lot of work we did on this, and in decreasing order of usefulness, it lists Shafer’s “Belief functions,” Possibility Theory, and the “Dezert-Smarandache Theory of Plausible and Paradoxical Reasoning.” I’d add “Fuzzy Sets” / “Fuzzy Logic.”
(Note that these are all formalisms in academic writing that predate and anticipate most of what you’ve listed above, but are harder ways to understand it. Except DST, which is hard to justify except as trying to be exhaustive about what people might want to think about non-probability belief.)