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Which form does a production rule take?

  • A.A frame with slots that inherit their default values from a parent frame
  • B.A logical implication with quantifiers
  • C.A network of nodes joined by labelled links representing relationships
  • D.An IF condition THEN action pair

Answer: D

A production rule pairs a condition part matched against working memory with an action part that asserts, retracts or acts. It is deliberately less expressive than full predicate logic, which is what keeps matching efficient. Frames, implications and semantic networks are alternative representations covered elsewhere in this topic. The modularity of rules, each independently meaningful, is the property that made knowledge bases maintainable.

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