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Why is probability used to represent uncertainty in an agent?

  • A.It summarises belief given evidence in a single consistent calculus
  • B.It removes the uncertainty from the agent's knowledge entirely
  • C.It is the only representation a computer is able to store
  • D.It guarantees that the agent's decisions will be correct

Answer: A

Probability assigns a degree of belief to each proposition and provides consistent rules for updating those beliefs as evidence arrives. It does not remove the uncertainty, which is a property of the agent's information rather than something to be eliminated, and it guarantees good decisions on average rather than correct ones. Adopting a calculus whose rules follow from a few axioms about consistent preference, rather than an invented scheme, is what gives the approach its foundation.

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