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What is the practical value of automated consistency checking?

  • A.Modelling errors are found mechanically rather than by inspection
  • B.It proves that the ontology correctly describes the whole real world
  • C.It guarantees the ontology will answer every query correctly
  • D.It removes the need for human review of the ontology

Answer: A

In an ontology of thousands of concepts a contradiction introduced by one axiom would never be found by reading, and a reasoner locates it in seconds. It says nothing about whether the ontology matches reality, which remains a matter of human judgement. Query correctness and review are not addressed. A mechanical check that catches a class of error completely, while saying nothing about correctness in the wider sense, is exactly as valuable as it is limited.

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