According to Dempster-Shafer theory for uncertainty management, Bel(A) Where denotes Belief of event A.
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: A. Bel(A) + Bel(¬A) ≤ 1
Explanation
Unlike probabilities, Dempster–Shafer beliefs need not add up: the mass not committed to A or ¬A stays uncommitted, so Bel(A) + Bel(¬A) ≤ 1.
Note on the official key: the official key says option C. Official/PW key is C (= 1), which is the rule for ordinary probability. In Dempster–Shafer theory belief can leave mass unassigned, so the sum is at most 1.
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