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What is the practical relationship between a knowledge base and its reasoner?

  • A.The knowledge base contains the inference rules as well as the facts
  • B.Each fact carries the procedure by which it should be used
  • C.The knowledge is data and the reasoner is general purpose
  • D.The reasoner must be rewritten whenever knowledge is added

Answer: C

Separating domain knowledge as data from a domain independent reasoner is what allows an expert to extend the system without programming, which was the founding promise of the knowledge based approach. Rewriting the reasoner, embedding rules in the base and attaching procedures to facts each erode that separation, the last being exactly the criticism of procedural attachment. An architecture whose central benefit is a separation must guard that separation carefully, since every convenience tends to erode it.

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