Probabilistic approach to nonmonotonic consequence relations
ECSQARU'11 Proceedings of the 11th European conference on Symbolic and quantitative approaches to reasoning with uncertainty
On real-valued evaluation of propositional formulas
FoIKS'12 Proceedings of the 7th international conference on Foundations of Information and Knowledge Systems
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This article considers some semantical properties of the postulates Weak Determinacy (WD) and Rational Contraposition (RC). In particular, we provide two representation theorems for preferential inference relations satisfying WD and RC respectively. This solves two open problems presented by H.Bezzazi, D.Makinson and R.Pino Pérez in [Journal of Logic and Computation, 7, 1997].