'Admissibility' may refer to:
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Admissible evidence, evidence which may be introduced in a court of law.
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Admissible decision rule, in decision theory, a rule which is never dominated.
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Admissible rule, in logic, a type of
rule of inference.
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Admissible heuristic, in computer science, is a heuristic which is no more than the lowest-cost path to the goal.