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What distinction does Dempster Shafer theory try to capture?

  • A.Between evidence from reliable and unreliable sources
  • B.Between discrete and continuous uncertainty in a model
  • C.Between lack of belief and belief in the negation
  • D.Between subjective and objective interpretations of probability

Answer: C

Knowing nothing about a coin is treated differently from knowing it is fair, whereas both give a probability of one half. Whether that difference should be represented in the formalism or in a distribution over parameters is the substance of the disagreement with the Bayesian position. Interpretation, reliability and continuity are separate issues. An objection resting on what a formalism cannot distinguish is answerable either by extending it or by showing the distinction unnecessary, and both replies have been made.

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