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What has been the lasting contribution of knowledge representation research?

  • A.A single representation now used by every artificial intelligence system
  • B.The demonstration that learned models cannot represent knowledge
  • C.A complete ontology of everyday commonsense knowledge
  • D.Precise vocabulary and formal tools for reasoning about knowledge

Answer: D

The field supplied reification, defaults, description logics, the open and closed world distinction and the web ontology standards, all of which remain in use. No universal representation emerged, learned models plainly do represent knowledge in their own way, and no complete commonsense ontology exists. Judging a research programme by the tools and concepts it leaves behind, rather than by whether its original goal was met, is usually the fairer assessment.

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