A study of provability in defeasible logic
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Defeasible logic is a logic-programming based nonmonotonic reasoning formalism which has an efficient implementation. It makes use of facts, strict rules, defeasible rules, defeaters, and a superiority relation. We clarify the proof theory of defeasible logic through an analysis of the conclusions it can draw. Using it, we show that defeaters do not add to the expressiveness of defeasible logic, among other results. The analysis also supports the restriction of defeasible logic to admit only acyclic superiority relations.
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- A study of provability in defeasible logic
- Book Title
- Advanced Topics in Artificial Intelligence
- Book Subtitle
- 11th Australian Joint Conference on Artificial Intelligence, AI’98 Brisbane, Australia, July 13–17, 1998 Selected Papers
- pp 215-226
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- Lecture Notes in Computer Science
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- Series Subtitle
- Lecture Notes in Artificial Intelligence
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- Springer Berlin Heidelberg
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