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LPNMR
2009
Springer
14 years 2 months ago
A Default Approach to Semantics of Logic Programs with Constraint Atoms
We define the semantics of logic programs with (abstract) constraint atoms in a way closely tied to default logic. Like default logic, formulas in rules are evaluated using the cl...
Yi-Dong Shen, Jia-Huai You
IJCAI
2003
13 years 9 months ago
Weak Conditional Logics of Normality
A default conditional α → β has most often been informally interpreted as a defeasible version of a classical conditional, usually the material conditional. That is, the intui...
James P. Delgrande
ICDT
1990
ACM
110views Database» more  ICDT 1990»
13 years 11 months ago
Beginnings of a Theory of General Database Completions
Ordinary logical implication is not enough for answering queries in a logic database, since especially negative information is only implicitly represented in the database state. M...
Stefan Brass
ECSQARU
2003
Springer
14 years 23 days ago
On the Relation between Reiter's Default Logic and Its (Major)
Abstract. Default logic is one of the best known and most studied of the approaches to nonmonotonic reasoning. Subsequently, several variants of default logic have been proposed to...
James P. Delgrande, Torsten Schaub
ECAI
2004
Springer
14 years 28 days ago
Plausibility Structures for Default Reasoning
Friedman and Halpern have introduced the inference by plausibility structures, which provides semantics for various default logics. This is a generalization of known inferences, su...
Yves Moinard