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Which representation groups an object's properties into named slots?

  • A.A frame
  • B.A production rule, whose condition part lists the properties that must hold together
  • C.A decision table
  • D.A certainty factor, which records how strongly a conclusion follows from its evidence

Answer: A

A frame collects the attributes of a concept as slots, each able to carry a value, a default, a type restriction or an attached procedure. Frames support inheritance along an is-a hierarchy, which rules do not. Decision tables and certainty factors serve different purposes entirely. Frames and rules are usually combined rather than opposed, with frames holding the objects and rules holding the reasoning about them. A single measurement chosen to respond to the one asymmetry beats several that respond to shared behaviour.

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