SW StudyWalks

Artificial Intelligence  /  AI 0229  ·  Atom · ~20 seconds

Top-Down: Start from the Question

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The top-down procedure works backward from a query: a goal is established by finding a rule whose head matches and taking its body as new subgoals, down to established facts.

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Asked one question, the procedure explores exactly that question's ancestry and touches nothing else.

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A goal matching no fact and no rule head is a dead end — backtracking applies here too.