In this short note, we investigate the framework where agents or players have some uncertainties upon their payoffs or losses, the behavior (or the type, number or any other characteristics) of other players. More specifically, we introduce an extension of the concept of Nash equilibria that generalize different solution concepts called by their authors, and depending on the context, either as robust, ambiguous, partially specified or with uncertainty aversion. We provide a simple necessary and sufficient condition that guarantees its existence and we show that it is actually a selection of conjectural (or self-confirming) equilibria. We finally conclude by how this concept can and should be defined in games with partial monitoring in order to preserve existence properties.
Mots clés : robust games, robust Nash equilibria, uncertainties, partial monitoring, conjectural equilibria
@article{RO_2014__48_3_365_0, author = {Perchet, Vianney}, title = {A note on robust {Nash} equilibria with uncertainties}, journal = {RAIRO - Operations Research - Recherche Op\'erationnelle}, pages = {365--371}, publisher = {EDP-Sciences}, volume = {48}, number = {3}, year = {2014}, doi = {10.1051/ro/2014001}, mrnumber = {3264383}, zbl = {1296.91013}, language = {en}, url = {http://www.numdam.org/articles/10.1051/ro/2014001/} }
TY - JOUR AU - Perchet, Vianney TI - A note on robust Nash equilibria with uncertainties JO - RAIRO - Operations Research - Recherche Opérationnelle PY - 2014 SP - 365 EP - 371 VL - 48 IS - 3 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/ro/2014001/ DO - 10.1051/ro/2014001 LA - en ID - RO_2014__48_3_365_0 ER -
%0 Journal Article %A Perchet, Vianney %T A note on robust Nash equilibria with uncertainties %J RAIRO - Operations Research - Recherche Opérationnelle %D 2014 %P 365-371 %V 48 %N 3 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/ro/2014001/ %R 10.1051/ro/2014001 %G en %F RO_2014__48_3_365_0
Perchet, Vianney. A note on robust Nash equilibria with uncertainties. RAIRO - Operations Research - Recherche Opérationnelle, Tome 48 (2014) no. 3, pp. 365-371. doi : 10.1051/ro/2014001. http://www.numdam.org/articles/10.1051/ro/2014001/
[1] Robust game theory. Math. Program., Ser. B 107 (2006) 231-273. | MR | Zbl
and ,[2] On pure conjectural equilibrium with non-manipulable information. Int. J. Game Theory 38 (2009) 209-219. | MR | Zbl
,[3] Ambiguous act equilibria. Games. Econ. Behav. 71 (2010) 246-260. | MR | Zbl
,[4] Conjectural equilibrium. Mimeo (1988).
and ,[5] Robust convex optimization. Math. Oper. Res. 23 (1998) 769-805. | MR | Zbl
and ,[6] Robust optimization. Princeton University Press (2009). | MR | Zbl
, and ,[7] Robust multi echelon multi period inventory control. Eur. J. Oper. Res. 199 (2009) 922-935. | Zbl
, and ,[8] D. Bertsimas. and A. Thiele, Robust and data-driven optimization: modern decision-making under uncertainty, in Tutorials on Oper. Res. (2006) Chap. 4, 122-195. | MR
[9] Minmax regret combinatorial optimization problems: an algorithmic perspective. RAIRO - Oper. Res. 45 (2011) 101-129. | EuDML | Numdam | MR | Zbl
, and ,[10] D. Ellsberg, Risk, ambiguity and the Savage axiom. Quat. J. Econom. 75 (1961) 643-669. | Zbl
[11] Self-confirming equilibrium. Econometrica 61 (1993) 523-545. | MR | Zbl
and ,[12] Maxmin expected utility with a non-unique prior. J. Math. Econ. 61 (1989) 141-153. | MR | Zbl
and ,[13] A further generalization of the Kakutani fixed point theorem, with applications to Nash equilibrium points. Proc. Am. Math. Soc. 3 (1952) 170-174. | MR | Zbl
,[14] Uncertainties in operations research. Oper. Res. 8 (1960) 437-445. | MR | Zbl
,[15] Subjective equilibrium in repeated games. Econometrica 61 (1993) 1231-1240. | MR | Zbl
and ,[16] Uncertainty, decision and normal form games. Mimeo (1996).
,[17] Partially specified probabilities: decisions and games. Am. Econ. J. Micro. 4 (2012) 70-100.
,[18] Strategies for prediction under imperfect monitoring. Math. Oper. Res. 33 (2008) 513-528. | MR | Zbl
, and ,[19] Repeated games, CORE discussion paper (1994) 9420-9422.
, and ,[20] Equilibrium points in N-person games. Proc. Natl. Acad. Sci. USA 36 (1950) 48-49. | MR | Zbl
,[21] Non-cooperative games. Ann. Math. 54 (1951) 286-295. | MR | Zbl
,[22] Internal regret with partial monitoring, calibration-based optimal algorithms. J. Mach. Learn. Res. 12 (2011) 1893-1921. | MR | Zbl
,[23] The strategic use of ambiguity. Mimeo (2011).
and ,[24] Minimizing regret: the general case. Games Econom. Behav. 29 (1999) 224-243. | MR | Zbl
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