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Which development style suited expert system projects?

  • A.A single pass through requirements, design, implementation and testing carried out in order
  • B.Formal specification first
  • C.Parallel development of several independent modules that are combined only at the very end
  • D.Rapid prototyping with repeated refinement

Answer: D

Because the knowledge could not be specified in advance, a small prototype was built, shown to the expert, and refined through many cycles. Seeing the system get a case wrong was often the only way to surface a missing rule. Waterfall and formal specification presuppose a requirements document that does not exist here, and modular parallel work founders on the interactions between rules.

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