Dempster–Shafer theory | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Dempster%E2%80%93Shafer_theory


00:01:41 1 Overview
00:04:18 1.1 Belief and plausibility
00:10:26 1.2 Combining beliefs
00:11:29 2 Formal definition
00:13:58 3 Dempster's rule of combination
00:20:55 3.1 Effects of conflict
00:24:34 3.1.1 Example producing correct results in case of high conflict
00:25:06 3.1.2 Example producing counter-intuitive results in case of high conflict
00:27:26 3.1.3 Example producing counter-intuitive results in case of low conflict
00:29:21 4 Dempster–Shafer as a generalisation of Bayesian theory
00:31:07 5 Criticism
00:35:47 6 See also
00:38:49 7 References



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SUMMARY
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The theory of belief functions, also referred to as evidence theory or Dempster–Shafer theory (DST), is a general framework for reasoning with uncertainty, with understood connections to other frameworks such as probability, possibility and imprecise probability theories. First introduced by Arthur P. Dempster in the context of statistical inference, the theory was later developed by Glenn Shafer into a general framework for modeling epistemic uncertainty—a mathematical theory of evidence. The theory allows one to combine evidence from different sources and arrive at a degree of belief (represented by a mathematical object called belief function) that takes into account all the available evidence.
In a narrow sense, the term Dempster–Shafer theory refers to the original conception of the theory by Dempster and Shafer. However, it is more common to use the term in the wider sense of the same general approach, as adapted to specific kinds of situations. In particular, many authors have proposed different rules for combining evidence, often with a view to handling conflicts in evidence better. The early contributions have also been the starting points of many important developments, including the transferable belief model and the theory of hints.