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Query learning of Horn formulas revisited: progress and open questions AbstractWe discuss a number of (mostly open) questions related to the learnability of Horn clauses from queries. We consider that the currently existing solution is satisfactory only to a certain extent, and that progress on the related questions stated here could contribute positively to advancing the state of the art in several related fields. Our contributions here are a new analysis of the existing algorithm, a new algorithm based on novel ideas, and the complete proof of a related structural result.
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