The precautionary principle is formulated in many different ways. However the differences are not of a fundamental nature. What is fundamental in the principle ?' i.e. the recognition that decisions must be taken on the basis of uncertain (also called ambiguous) information, in particular...

Une formalisation du Principe de Précaution est donnée ici : nous formalisons la connaissance scientifique relative à la plausibilité d'évènements dans l'espace des états, ainsi que les concepts d'évènements et d'actes scientifiquements non ambigus. Nous définissons un plannificateur...

We propose a multivariate extension of a well-known characterization by S. Kusuoka of regular and coherent risk measures as maximal correlation functionals. This involves an extension of the notion of comonotonicity to random vectors through generalized quantile functions. Moreover, we propose...

We propose new concepts of statistical depth, multivariate quantiles,ranks and signs, based on canonical transportation maps between a distributionof interest on IRd and a reference distribution on the d-dimensionalunit ball. The new depth concept, called Monge-Kantorovich depth, specializesto...

We revisit Machina's local utility as a tool to analyze attitudes to multivariate risks. Using martingale embedding techniques, we show that for non-expected utility maximizers choosing between multivariate prospects, aversion to multivariate mean preserving increases in risk is equivalent to...

Cet article illustre le lien entre identification partielle dans les modèles économétriques et critère de décision de Jaffray dans l'incertain non probabilisé à travers le problème du choix de niveau optimal d'émissions toxiques dans un lac partagé entre deux communes.

This article illustrates the relationship between partial identification in econometric models and the Jaffray model of decision under ambiguity with the problem of determining the optimal emissions level of toxic waste into a shared lake. Code JEL : C18, D81, Q51

We propose a multivariate extension of Yaariʼs dual theory of choice under risk. We show that a decision maker with a preference relation on multidimensional prospects that preserves first order stochastic dominance and satisfies comonotonic independence behaves as if evaluating prospects using...

We propose a methodology for combining several sources of model and data incompleteness and partial identification, which we call Composition Theorem. We apply this methodology to the construction of confidence regions with partially identified models of general form. The region is obtained by...

This paper contributes to the literature on hedonic models in two ways. First, it makes use of Queyranne's reformulation of a hedonic model in the discrete case as a network flow problem in order to provide a proof of existence and integrality of a hedonic equilibrium and efficient computational...