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- Didier Dubois, Henri Prade
- Mathematics in science and engineering
- 1980

Fuzziness is not a priori an obvious concept and demands some explanation. “Fuzziness” is what Black (NF 1937) calls “vagueness” when he distinguishes it from “generality” and from “ambiguity.” Generalizing refers to the application of a symbol to a multiplicity of objects in the field of reference, ambiguity to the association of a finite number of… (More)

- Didier Dubois
- Knowledge Eng. Review
- 1996

- Didier Dubois, Jérôme Lang, Henri Prade
- IEEE Trans. Knowl. Data Eng.
- 1994

In this paper an approach to automated deduction under uncertainty ,based on possibilistic logic, is proposed ; for that purpose we deal with clauses weighted by a degree which is a lower bound of a necessity or a possibility measure, according to the nature of the uncertainty. Two resolution rules are used for coping with the different situations, and the… (More)

- Didier Dubois, Henri Prade
- Computational Intelligence
- 1988

- Didier Dubois, Henri Prade
- Inf. Sci.
- 1983

- Salem Benferhat, Claudette Cayrol, Didier Dubois, Jérôme Lang, Henri Prade
- IJCAI
- 1993

The idea of ordering plays a basic role in commonsense reasoning for addressing three interrelated tasks: inconsistency handling, belief revision and plausible inference. We study the behavior of non-monotonic inferences induced by various methods for priority-based handling of inconsistent sets of classical formulas. One of them is based on a lexicographic… (More)

The problem of converting possibility measures into probability measures has received attention in the past, but not by so many scholars. This question is philosophically interesting as part of the debate between probability and fuzzy sets. The imbedding of fuzzy sets into random set theory as done by Goodman and Nguyen (1985), Wang Peizhuang (1983), among… (More)

- Didier Dubois, Hélène Fargier, Henri Prade
- Applied Intelligence
- 1996

In classical Constraint Satisfaction Problems (CSPs) knowledge is embedded in a set of hard constraints, each one restricting the possible values of a set of variables. However constraints in real world problems are seldom hard, and CSP's are often idealizations that do not account for the preference among feasible solutions. Moreover some constraints may… (More)

- Didier Dubois, Henri Prade
- Inf. Sci.
- 1985

- Didier Dubois, Henri Prade
- IJCAI
- 1995

A counterpart to von Neumann and Morgenstern' expected utility theory is proposed in the framework of possibility theory. The existence of a utility function, representing a preference ordering among possibility distributions (on the consequences of decision-maker's actions) that satisfies a series of axioms pertaining to decision-maker's behavior, is… (More)