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Which conflict resolution strategy prefers the most recent facts?

  • A.Recency
  • B.Specificity, which prefers the rule whose condition part imposes the most constraints
  • C.Refractoriness
  • D.Priority ordering, in which the knowledge engineer assigns each rule an explicit rank

Answer: A

Recency fires the rule matching the most recently asserted working-memory element, which keeps attention on the current line of reasoning rather than wandering. Specificity prefers the more detailed rule, refractoriness stops a rule firing twice on the same data, and explicit priorities are set by hand. Most engines combine several of these in a fixed order, so knowing what each contributes is needed to predict behaviour. Working one numerical case through both cases side by side fixes the distinction better than any rule of thumb.

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