Articles

A Note on Mixture Sets in Decision Theory

P. MONGIN

Decisions in Economics and Finance

2001, vol. 24, pp.59-69

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


An operator approach to stochastic games

D. ROSENBERG, S. Sorin

Israël Journal of Mathematics

2001, n°121, pp.221-246

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


Bargaining on an Internet Agent-based Market: Behavioral vs. Optimizing Agents, Electronic Commerce Research Journal

C. PARASCHIV, L. Devveaux, M. Latourrette

Electronic Commerce Research and Applications

octobre 2001, vol. 1, n°4, pp.371-401

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


Continua of Underemployment Equilibria Reflecting Coordination Failures, Also at Walrasian Prices

H. CRES, A. CITANNA, A. Villanacci, J. Drèze, J. Herings, H. Crès

Journal of Mathematical Economics

2001, n°36, pp.169-200

Départements : Finance, Economie et Sciences de la décision


In this paper, the existence of unemployment is partly explained as being the result of coordination failures. It is shown that as a result of self-fulfilling pessimistic expectations, even at Walrasian prices, a continuum of equilibria results, among which an equilibrium with approximately no trade and a Walrasian equilibrium. These coordination failures also arise at other price systems, but then unemployment is the result of both a wrong price system and coordination failures. Some properties of the set of equilibria are analyzed. Generically, there exists a continuum of non-indifferent equilibrium allocations. Under a condition implied by gross substitutability, there exists a continuum of equilibrium allocations in the neighborhood of a competitive allocation, when prices are Walrasian. For a specialized economy, a dynamic illustration is offered

Cumulative Discrete Choice

I. GILBOA, A. Pazgal

Marketing Letters

2001, vol. 12, pp.119-130

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


Multiple factor analysis combined with PLS path modelling. Application to the analysis of relatioships between physicochemical variables, sensory profiles and hedonic judgements

J. Pagès, M. TENENHAUS

Chemometrics and Intelligent Laboratory Systems

28 octobre 2001, vol. 58, n°2, pp.261-273

Départements : Economie et Sciences de la décision


On S-convexity and risk aversion

M. Denuit, C. Lefèvre, M. SCARSINI

Theory and Decision

2001, vol. 50, n°1, pp.239-248

Départements : Economie et Sciences de la décision


The present note first discusses the concept of s-convex pain functions in decision theory. Then, the economic behavior of an agent with such a pain function is represented through the comparison of some recursive lotteries

PLS Path modelling and multiple table analysis. Application to the cosmetic habits of women in Ile-de-France

J. Latreille, M. TENENHAUS, C. Guinot

Chemometrics and Intelligent Laboratory Systems

28 octobre 2001, vol. 58, n°2, pp.247-259

Départements : Economie et Sciences de la décision


Special Issue: PLS Methods

Probability Logic for Type Spaces

A. Heifetz, P. MONGIN

Games and Economic Behavior

2001, vol. 35, pp.31-53

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)


Using a formal propositional language with operators "individual i assigns probability at least alpha" for countably many alpha, we devise an axiom system which is sound and complete with respect to the class of type spaces in the sense of Harsanyi (1967-1968, Management Science, 14, 159-182). A crucial inference rule requires that degrees of belief be compatible for any two sets of assertions which are equivalent in a suitably defined natural sense. The completeness proof relies on a theorem of the alternative from convex analysis, and uses the method of filtration by finite sub-languages

Quitting Games

E. Solan, N. VIEILLE

Mathematics of Operations Research

mai 2001, vol. 26, n°2, pp.265-285

Départements : Economie et Sciences de la décision, GREGHEC (CNRS)



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