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Why do solvers let the modeller specify the search strategy?

  • A.Regulations require the search order to be documented
  • B.Specifying the order removes the need for propagation
  • C.Domain knowledge often suggests a much better ordering
  • D.The solver cannot compute any ordering for itself

Answer: C

A modeller who knows that scheduling the bottleneck machine first, or assigning the largest task first, usually works can express that directly and outperform any general heuristic. Default strategies exist and are often adequate. Documentation and propagation are separate matters. A system that admits domain knowledge where it exists, rather than insisting on generality, is what allows a general tool to compete with a bespoke program.

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