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New Tractable Cases in Default Reasoning from Conditional Knowledge Bases

Abstract:

We present new tractable cases for default reasoning from conditional knowledge bases. In detail, we introduce q-Horn conditional knowledge bases, which allow for a limited use of disjunction.We show that previous tractability results for epsilon-entailment, proper epsilon-entailment, and z- and z+-entailment in the Horn case can be extended to the q-Horn case. Moreover, we present feedback-free-Horn conditional knowledge bases, which constitute a new, meaningful class of conditional knowl...

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Publisher:
Springer
Volume:
1919
Host title:
Proceedings of the 7th European Workshop on Logics in Artificial Intelligence‚ JELIA 2000‚ Malaga‚ Spain‚ September 29 − October 2‚ 2000
Publication date:
2000-01-01
ISBN:
3540411313
UUID:
uuid:f74903f6-9935-4554-98f4-328e00486c9c
Local pid:
cs:6737
Deposit date:
2015-03-31

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