This paper refines the tractability/intractability frontier of default reasoning from conditional knowledge bases. It presents two new tractable cases with relation to lexicographic entailment. In particular, we have introduced nested conditional knowledge bases and co-nested conditional knowledge bases, which are meaningful conditional knowledge bases. Both tractable classes presented in this paper can be recognized in linear time.
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References
E.W. Adams, The Logic of Conditionals. D. Reidel, Dordrecht, 1 edition, 1975.
S. Benferhat, C. Cayrol, D. Dubois, J. Lang and H. Prade, Inconsistency Management and Prioritized Syntax-Based Entailment, in: IJCAI'93: Proceedings of the Thirteenth International Joint Conferences on Artificial Intelligence (1993) pp. 640–645.
K.S. Booth and G.S. Lueker, Testing for the consecutive ones property, interval graphs, and graph planarity using P–Q tree algorithms, Journal of Comparative System Science 13 (1976) 335–379.
C. Cayrol, M.C. Lagasquie-Schiex, and T. Schiex, Nonmonotonic reasoning: From complexity to algorithms. Annals of Mathematics and Artificial Intelligence 22(3–4) (1998) 207–236.
V. Chandru and J.N. Hooker, Optimization Methods for Logical Inference, Series in Discrete Mathematics and Optimization (Wiley, 1999).
V. Chandru and V.S. Jayachandran, Maxsat and related problems on extended nested propositions. Research report IISc-CSA-94-12, Computer Science and Automation, Indian Institute of Science, Bangalore, India, 1994.
S.A. Cook, The complexity of theorem-proving procedures, in: ACM Symposium on Theory of Computing (1971) pp. 151–158.
T.H. Cormen, C.E. Leiserson, R.L. Rivest, and C. Stein, Introduction to Algorithms (MIT Press, 2001).
T. Eiter and T. Lukasiewicz, Complexity results for default reasoning from conditional knowledge bases, Artificial Intelligence 124(2) (2000) 169–241.
M.R. Garey and D.S. Johnson, Computers and Intractability–A Guide to the Theory of NP-Completeness (W. H. Freeman and Company, San Francisco, 1978).
M. Goldszmidt, P. Morris, and J. Pearl, A maximum entropy approach to nonmonotonic reasoning, IEEE Transactions of Pattern Analysis and Machine Intelligence 15(3) (March1993) 220–232.
M. Goldszmidt and J. Pearl, Qualitative probabilities for default reasoning, belief revision, and causal modeling. Artificial Intelligence 84(1–2) (1996) 57–112.
J. Gu, P.W. Purdom, J. Franco, and B.W. Wah, Algorithms for the satisfiability (SAT) problem: A survey, in: Satisfiability Problem Theory and Applications, eds. D. Du, J. Gu, and P.M. Pardalos, Vol. 35 of DIMACS: Series in Discrete Mathematics and Theoretical Computer Science, (American Mathematical Society, 1997) pp. 19–152.
R.G. Jeroslow, Logic-Based Decision Support. Mixed Integer Model Formulation, Elsevier, Amsterdam, 1988.
R.G. Jeroslow and J. Wang, Solving propositional satisfiability problems. Annals of Mathematics and Artificial Intelligence 1 (1990) 167–187.
D.S. Johnson, A catalog of complexity classes, in: Handbook of Theoretical Computer Science, Vol. A: Algorithms and Complexity, Chapter 9, ed. J. van Leeuwen (Elsevier and MIT Press (co-publishers), 1990) pp. 67–161.
D.E. Knuth, Nested satisfiability, Acta Informatica 28(1) (1990) 1–6.
J. Kratochvíl and M. Křivánek, Satisfiability of co-nested formulas, Acta Informatica 30(4) (1993) 397–403.
D. Lehmann, Another perspective on default reasoning, Annals of Mathematics and Artificial Intelligence 15(1) (1995) 61–82.
J. Pearl, Probabilistic semantics for nonmonotonic reasoning: A survey, in: KR’89: Principle of Knowledge Representation and Reasoning, eds. R.J. Brachman, H.J. Levesque, and R. Reiter, (Morgan Kufmann, San Mateo, California, 1989) pp. 505–516.
J. Pearl, System Z, A natural ordering of defaults with tractable applications to nonmonotonic reasoning, in: TARK: Theoretical Aspects of Reasoning about Knowledge, ed. R. Parikh (Morgan Kaufmann, 1990) pp. 121–136.
H.P. Williams, Fourier–Motzkin elimination extension to integer programming problems, Journal of Combinatorial Theory (A) 21 (1976) 118–123.
H.P. Williams, Logic applied to integer programming and integer programming applied to logic, European Journal of Operational Research 81(3) (1995) 605–616.
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Borges Garcia, B. New tractable classes for default reasoning from conditional knowledge bases. Ann Math Artif Intell 45, 275–291 (2005). https://doi.org/10.1007/s10472-005-9000-3
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DOI: https://doi.org/10.1007/s10472-005-9000-3