Seminars
The Parisian Seminar of Game Theory
The Parisian Seminar of Game Theory takes place on Monday from 11 to 12. The location is Centre Emile Borel de l’Institut Henri Poincare, 11 rue Pierre et Marie Curie, Paris 5ème, room 01 (ground floor).
Administrative correspondant: Sophie Gozlan
This seminar is organized by Marie Laclau, Lucie Ménager, Xavier Venel, Bruno Ziliotto
- Go to the seminar website : https://sites.google.com/view/seminairetheoriedesjeux/
- To register to the seminar mailing list, please write to : lucie.menager u-paris2.fr
This seminar is co-funded by a French government subsidy managed by the Agence Nationale de la Recherche under the framework of the Investissements d’avenir programme reference ANR-17-EURE-0001.
Upcoming events
- Monday 25 January 2021
- JAIN Atulya : TBA
- Monday 21 June 2021
- Doctoral workshop on learning
Archives
- Tuesday 19 January 2021
- Workshop Games, Approachability and Learning
- Full text [pdf]
- Monday 18 January 2021
- Workshop Games, Approachability and Learning
- Full text [pdf]
- Monday 11 January 2021 11:00-12:00
- Zoom : https://hec-fr.zoom.us/j/95796468806 ID de réunion : 957 9646 8806
- GAUBERT Stéphane (INRIA, CMAP, Ecole Polytechnique) : The geometry of fixed points sets of Shapley operators
- Marianne Akian and Sara Vannucci
- AbstractShapley operators of undiscounted zero-sum two-player games are order-preserving maps that commute with the addition of a constant. The fixed points of these Shapley operators play a key role in the study of games with mean payoff: the existence of a fixed point is guaranteed by ergodicity conditions, moreover, fixed points that are distinct (up to an additive constant) determine distinct optimal stationary strategies. We provide a series of characterizations of fixed point sets of Shapley operators in finite dimension (i.e., for games with a finite state space). Some of these characterizations are of a lattice theoretical nature, whereas some other rely on metric geometry and tropical geometry. More precisely, we show that fixed point sets of Shapley operators are special instances of hyperconvex spaces (non-expansive retracts of sup-norm spaces) that are lattices in the induced partial order. They are also characterized by a property of ``best co-approximation'' arising in the theory of nonexpansive retracts of Banach spaces. Moreover, they retain properties of convex sets, with a notion of ``convex hull'' defined only up to isomorphism. We finally examine the special case of deterministic games with finite action spaces. Then, fixed point sets have a structure of polyhedral complexes, which include as special cases tropical polyhedra. These complexes have a cell decomposition attached to stationary strategies of the players, in which each cell is an alcoved polyhedron of An type.
- Monday 4 January 2021 11:00-12:00
- RAGEL Thomas (CEREMADE, Dauphine PSL) : TBA
- Monday 14 December 2020 11:00-12:00
- On line
- MARLATS Chantal (LEMMA, Paris 2) : Voluntary confinement
- Monday 2 November 2020 11:00-12:00
- A simple refinement of sequential equilibria
- AbstractWe provide a simple refinement of sequential equilibria in generic finite extensive form games. In these equilibria, at information sets that are one (agent) deviation away from the equilibrium path, the beliefs put positive probability only on those nodes which can be reached by one deviation of an agent. Namely, multiple deviations of agents are infinitely less likely than a single deviation of a single agent. In generic games Mertens stable outcomes can be supported with such a belief.
- Monday 12 October 2020 11:00-12:00
- room 314 (third floor) at Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème.
- PEREZ-RICHET Eduardo (Sciences Po, département d’économie) : Test design with unobservable falsification
- AbstractWe study receiver-optimal test design under manipulations by an agent who can falsify the data input of the test. We characterize an optimal test and an optimal falsification proof tests under different assumptions on the cost function, and discuss the welfare properties of such tests.
- Monday 5 October 2020 11:00-12:00
- room 314 (third floor) at Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème.
- AMOUSSOU-GUENOU Yackolley (CEA List & LIP6, Sorbonne Université) : Is distributed consensus possible in committee-based blockchains?
- AbstractWe study the rational behaviors of participants in committee-based blockchains. Committee-based blockchains rely on specific blockchain consensus that must be guaranteed in presence of rational participants. We consider a simplified blockchain consensus algorithm based on existing or proposed committee-based blockchains that encapsulates the main actions of the participants: voting for a block, and checking its validity. Knowing that those actions have costs, and achieving the consensus gives rewards to committee members, we study using game theory how strategic players behave while trying to maximizing their gains.
- Monday 28 September 2020 11:00-12:00
- either amphi Hermite (ground floor) or room 314 (third floor) at Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- SALAMANCA Andrés (PSE) : Biased Mediators in Conflict Resolution
- AbstractWhat is the role of biased mediators for reaching negotiated settlements in social conflicts? Previous empirical research in Political Sciences has suggested that mediators are often more effective if they are unbiased (or impartial).This research contributes to the previous debate following a game theoretic analysis. We study a model of cheap-talk in which an agent possesses private information about a binary state of the world. This information is required by an uninformed principal in order to take an action in the real line. Individuals have quadratic preferences, with a difference in their bliss point parameterized by a state-dependent bias parameter. Therefore, a conflict of interests between both parties arises because of a discrepancy in their bliss point. Provided that mediation is beneficial for at least one party, we show that whenever the variation of the bias across states is large enough, the agent will refuse to participate in a mediation process that is biased towards the principal. Otherwise, the mediator’s bias is inconsequential for reaching an agreement, hence a biased mediator is as effective as an unbiased one.
- Monday 25 May 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- SHMAYA Eran : *
- Monday 18 May 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- SMOLIN Alex (TSE) : *
- Monday 27 April 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- LOVO Stefano : *
- Monday 30 March 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- RENOU Ludovic (QMUL) : *
- Monday 16 March 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- LEVY John : *
- Monday 9 March 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- KRÄHMER Daniel : *
- Monday 2 March 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- ZSELEVA Anna : *
- Monday 27 January 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- MERTIKOPOULOS Panayotis : *
- Monday 20 January 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- MATYSKOVA Ludmila : *
- Monday 13 January 2020 11:00-12:00
- Institut Henri Poincaré - 11 rue Pierre et Marie Curie - 75005 Paris
- GAUJAL Bruno : *
- Monday 16 December 2019 11:00-12:00
- Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- PAWLOWITSCH Christina (Université Panthéon-Assas, LEMMA) : Evolutionary dynamics of costly signaling
- Josef Hofbauer
- AbstractCostly-signaling games have a remarkably wide range of applications (education as a costly signal in the job market, handicaps as a signal for fitness in mate selection, politeness in language). The formal analysis of evolutionary dynamics in costly-signaling games has only recently gained more attention. In this paper, we study evolutionary dynamics in two basic classes of games with two states of nature, two signals, and two possible reactions in response to signals: a discrete version of Spence’s (1973) model and a discrete version of Grafen’s (1990) formalization of the handicap principle. We first use index theory to give a rough account of the dynamic stability properties of the equilibria in these games. Then, we study in more detail the replicator dynamics and to some extent the best-response dynamics.
- Monday 9 December 2019 11:00-12:00
- Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- CORREA José (Universidad de Chile) : On the Price of Anarchy for flows over time
- Andres Cristi and Tim Oosterwijk
- AbstractDynamic network flows, or network flows over time, constitute an important model for real-world situations where steady states are unusual, such as urban traffic and the Internet. These applications immediately raise the issue of analyzing dynamic network flows from a game-theoretic perspective. In this paper we study dynamic equilibria in the deterministic fluid queuing model in single-source single-sink networks, arguably the most basic model for flows over time. In the last decade we have witnessed significant developments in the theoretical understanding of the model. However, several fundamental questions remain open. One of the most prominent ones concerns the Price of Anarchy, measured as the worst case ratio between the minimum time required to route a given amount of flow from the source to the sink, and the time a dynamic equilibrium takes to perform the same task. Our main result states that if we could reduce the inflow of the network in a dynamic equilibrium, then the Price of Anarchy is exactly e/(e ? 1) ? 1.582. This significantly extends a result by Bhaskar, Fleischer, and Anshelevich (SODA 2011). Furthermore, our methods allow to determine that the Price of Anarchy in parallel-link networks is exactly 4/3. Finally, we argue that if a certain very natural monotonicity conjecture holds, the Price of Anarchy in the general case is exactly e/(e ? 1).
- Monday 2 December 2019 11:00-12:00
- Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- GALICHON Alfred (New York University) : The equilibrium flow problem and multivocal gross substitutes
- Larry Samuelson and Lucas Vernet
- AbstractWe show that several classical economic models such as two-sided matching models, min-cost flow problems, hedonic models, and dynamic programming problems are subcases of a more general class of problems called equilibrium flow problems. To analyze this problem, we introduce a novel notion of gross substitutes for correspondences called "multivocal gross substitutes". We show that this notion generalizes some familiar notions of substitutes (such as weak gross substitutes) while strengthening others (such as that of Kelso and Crawford). Our main result, the inverse isotonicity theorem, establishes that if an excess supply correspondence satisfies multivocal gross substitutes, then the inverse correspondence is isotone in the strong set order, extending to the corresponding case results by Berry, Gandhi and Haile (2013). As another consequence, extend the lattice structure results of Demange and Gale (1985) to general networks beyond the bipartite case.
- Monday 25 November 2019 11:00-12:00
- Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- PREDTETCHINSKI Arkadi : Arkadi PREDTETCHINSKI
- Monday 18 November 2019 11:30-12:30
- Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- MOULIN Hervé : Toto
- Monday 11 November 2019 11:00-12:00
- RADJA prenom ... : Test service info
- Monday 4 December 2017 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- PRADELSKI Bary (ETH Zurich) : *
- Monday 20 November 2017 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- CORREA José (Universidad de Chile) : *
- Monday 6 November 2017 11:00-12:00
- Salle 01 (RDC), Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, 75005 Paris
- SAVANI Rahul (University of Liverpool ) : *
- Monday 16 October 2017 11:00-12:00
- Salle 01 (RDC), Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, 75005 Paris
- SOLAN Eilan (Tel Aviv University ) : Optimal Dynamic Inspection
- AbstractWe study a discounted repeated inspection game with two agents and one principal. Both agents may pro.fit by violating certain rules, while the principal can inspect on at most one agent in each period, in.flicting a punishment on an agent who is caught violating the rules. The goal of the principal is to minimize the discounted number of violations, and he has a Stackelberg leader advantage. We characterize the principal's optimal inspection strategy.
- Monday 9 October 2017 11:00-12:00
- Salle 01 (RDC), Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, 75005 Paris
- MERTIKOPOULOS Panayotis : No-Regret Learning in Games
- AbstractIn many cases of practical interest, the players of a repeated game may not know the structure of the game being played - simply think of commuters driving to work every day, ignorant of the number of commuters at each part of the road. In such cases, it is often assumed that players follow a no-regret procedure, i.e. an updating policiy that provably minimizes each player's individual regret against any possible play of their opponents. This talk focuses on the following question: does the sequence of play induced by a no-regret learning process converge to an equilibrium of the underlying stage game? I will present some recent contributions to this question (in both finite and continuous games), and I will discuss the impact of the feedback available to the players.
- Monday 27 June 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 20 June 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 13 June 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 6 June 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- ZACCOUR Georges
- SCHROEDER Marc
- Monday 30 May 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 23 May 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 9 May 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- RITZBERGER Klaus
- Monday 11 April 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- SANTAMBROGIO
- Monday 4 April 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- LOVO Stefano
- Monday 21 March 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- QUINCAMPOIX Marc
- Monday 14 March 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- ZILIOTO Bruno
- Monday 7 March 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- RADY Sven
- Monday 15 February 2016 11:15-12:15
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- MANNOR Shie (Technion) : Time Series Analysis Between stochastic and adversarial: forecasting with online ARMA model
- Monday 15 February 2016 10:00-11:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- SOLAN Eilan (Tel Aviv) : Acceptable strategy profiles in stochastic games
- Monday 8 February 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- HERNANDEZ Penelope (Valencia)
- Monday 1 February 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- Monday 25 January 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- HEINRICH Max
- Monday 18 January 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- FAURE Matthieu
- Monday 11 January 2016 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- KLIMM Max
- Monday 14 December 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- LESSARD Sabin
- Monday 7 December 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- KANADE Varun (ENS) :
- Monday 30 November 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- BABICHENKO Yakov :
- Monday 23 November 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- PREDTETCHINSKI Arkadi : Optimal Stationary Strategies for lim sup Stochastic Games
- Monday 16 November 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- JEHIEL Philippe : Investment strategy and selection bias: An equilibrium perspective on overconfidence
- Monday 9 November 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- HART Sergiu (the Hebrew University of Jerusalem) : (1) The Query Complexity of Correlated Equilibria (with Noam Nisan), and (2) Smooth Calibration, Leaky Forecasts, and Finite Recall (with Dean P. Foster)
- Monday 2 November 2015 11:00-12:00
- salle 01 (rez-de-chaussée) au Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pierre et Marie Curie, Paris 5ème
- WAN Cheng (University of Oxford) : Strategic decentralization in binary choice congestion games
- Monday 3 December 2012 11:00-12:00
- Institut Henri Poincare 11, rue pierre et marie curie – 7500
- MENAGER Lucie (Universités Panthéon-Assas et Lille 1) : Strategic observation in bandit models
- Monday 26 November 2012 11:00-12:00
- Institut Henri Poincare 11, rue pierre et marie curie – 7500
- TOIKKA Juuso Toikka (MIT) : Efficiency in games with markovian private information
- Monday 26 November 2012 10:00-11:00
- Institut Henri Poincare 11, rue pierre et marie curie – 7500
- CARDALIAGUET Pierre (Université Paris Dauphine) : Some aspects of mean field games
- Monday 19 November 2012 11:00-12:00
- Institut Henri Poincare 11, rue pierre et marie curie – 7500
- FLESCH Janos (Maastricht University) : On subgame-perfection in games with perfect information
- Monday 12 November 2012 11:00-12:00
- Institute Henri Poincare - Centre Emile Borel - Salle 01 - r
- VIOSSAT Yannick (Université Paris Dauphine) : No-regret dynamics and fictitious-play
- Monday 12 November 2012 11:00-12:00
- Institut Henri Poincare 11, rue pierre et marie curie – 7500
- VIOSSAT Yannick (Université Paris Dauphine) : No-regret dynamics and fictitious-play
- Monday 17 September 2012 11:00-12:00
- Centre Emile Borel de l'Institut Henri Poincaré, 11 rue Pier
- WEINSTEIN Jonathan (Northwestern University) : Robustness in Repeated Games
- Monday 30 April 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- VENEL Xavier (TSE & Université Toulouse 1) : A distance for probability spaces and long-term values in Markov Decision Processes and Repeated Games.
- Co-author(s): J. Renault
- Monday 2 April 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- BALKENBORG Dieter (Exeter University) : Strict equilibrium sets
- Co-author(s): K. Schlag et D. Vermeulen
- Monday 26 March 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- KANDORI Michihiro (University of Tokyo) : Asynchronous Revision Games
- Monday 19 March 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- BRAVO Mario (Université Paris 6) : An Adjusted Payoff-Based Procedure for Normal Form Games
- Monday 12 March 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- VERMEULEN Dries (Maastricht University) : *
- Monday 5 March 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- LUGOSI Gabor (Pompeu Fabra University) : Regret in Online Combinatiorial Optimization
- Monday 5 March 2012 10:00-11:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- HAMADENE Said (Université du Maine) : Multi-players Nonzero-sum Dynkin Game in continuous time
- Monday 30 January 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- LE TREUST Maël (Supélec) : Correlation and min-max levels in repeated games with imperfect monitoring
- Monday 23 January 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- WOZNY Lukasz (Warsaw School of Economics) : A Constructive study of Markov equilibria in stochastic games with strategic complementarities
- Monday 16 January 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- RIEDEL Frank (Bielefeld University) : Strategic use of ambiguity
- Monday 9 January 2012 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- SCARSINI Marco (LUISS) : Monopoly pricing in the presence of social learning
- Monday 12 December 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- ETTINGER David (Université Paris-Dauphine) : o Deception in a repeated expert/agent interaction: theory and experiment
- Monday 5 December 2011 11:00-12:00
- Institut Henri Poincare - Salle 5 ou Salle 314 ou 201
- MORTIMORT David (PSE) : Aggregate Representations of Aggregate Games
- Co-author(s): Lars Stole
- Monday 28 November 2011 11:00-12:00
- The session was canceled.
- Institut Henri Poincare - Salle 5, 314 ou 201
- MERTENS Jean-François (CORE, Université de Louvain) : Shapley value with a continuum of agents: stable bridges with index 1
- Monday 21 November 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- PERETZ Ron (Tel Aviv University) : The entropy method and repeated games with bounded complexity
- Monday 14 November 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- ZAPECHLNYUK Andriy (Queen Mary, Univ. of London) : Eliciting Information from a committee
- Monday 7 November 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- SCHLAG Karl (University of Vienna) : Decision Making in Uncertain and Changing Environments
- Monday 7 November 2011 10:00-11:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- SKRETA Vasiliki (NYU) : Transparency and Commitment
- Monday 31 October 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- SEREA Oana (Université Paris 6) : Differential games and Zubov's method
- Monday 24 October 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- WAN Cheng (Université Paris 6) : Coalitions in nonatomic congestion games
- Monday 17 October 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- HORNER Johannes (Yale University) : Stationary equilibria in continuons-time games with private monitoring
- Monday 10 October 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- LACLAU Marie (HEC Paris) : Communication in repeated games played on a fixed network
- Monday 3 October 2011 11:00-12:00
- Institut Henri Poincare - Salle 5, 314 ou 201
- OURY Marion (Université de Cergy) : Continuous implementation: a full characterization for finite environments
- Monday 27 June 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- CELIK Gorkem (ESSEC) : Reciprocal relationships and mechanism design
- Monday 20 June 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- ABDOU Joseph (Université Paris 1 Panthéon-Sorbonne) : Stability Index and Application to the Meet Game on a Lattice
- Monday 6 June 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- LASAULCE Samson (Supelec) : Multiuser channels and games
- Monday 30 May 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- TOMALA Tristan (HEC) : Belief-free communication equilibria in repeated games
- Monday 23 May 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- SUDDERTH William (University of Minnesota) : Perfect Information Games with Upper Semicontinuous Payoffs
- Monday 16 May 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- HERINGS Jean-Jaques (Maastricht University) : Stationary Equilibria in Stochastic Games: Structure, Selection, and Computation
- Monday 9 May 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- TERCIEUX Olivier (PSE) : Robust Equilibria in Sequential Games under Almost Common belief
- Monday 2 May 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- BLUME Andreas (University of Pittsburgh) : Language Barriers
- Co-auteur(s) : Oliver Board
- AbstractDifferent people use language in different ways. Private information about language competence can be used to re ect the idea that language is imperfectly shared. In optimal equilibria of common interest games there will generally be some benefit from communication with an imperfectly shared language, but the efficiency losses from private information about language competence in excess of those from limited competence itself may be significant. In optimal equilibria of common-interest sender-receiver games, private information about language competence distorts and drives a wedge between the indicative meanings of messages (the decision-relevant information indicated by those messages) and their imperative meanings (the actions induced by those messages). Indicative meanings are distorted because information about decision relevant information becomes confounded with information about the sender's language competence. Imperative meanings of messages become distorted because of the uncertain ability of the receiver to decode them. We show that distortions of meanings persist with higher-order failures of knowledge of language competence. In a richer class of games, where both senders and receivers move at the action stage and where payoffs violate a self-signaling condition, these distortions may result in complete communication failure for any finite-order knowledge of language competence.
- Full text [pdf]
- Monday 4 April 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- FAURE Mathieu (Institut de mathématiques de Neuchâtel) : Stochastic Approximations, Differential Inclusions and consistency in games
- Monday 28 March 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- MARUTA Toshimasa (Nihon University) : Stochastically Stable Equilibria in n-person Binary Coordination Games
- Monday 21 March 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- RÜDIGER Jesper (Universidad Carlos III) : Biased Information Transmission
- Monday 14 March 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- JEHIEL Philippe (PSE) : Reputation with Analogical Reasoning
- Monday 7 March 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- SABOURIAN Hamid (University of Cambridge ) : Repeated Implementation
- Monday 28 February 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- YOUNG Peyton (University of Oxford) : Efficiency and Equilibrium in Trial and Error Learning
- Monday 7 February 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- LESLIE David (University of Bristol) : Controlled learning in games
- Monday 31 January 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- BICH Philippe (Université Paris 1) : Relaxed Nash Equilibria of Discontinuous Games
- Monday 24 January 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- SOLAN Eilon (Tel Aviv University) : Des jeux d'arrêt en temps continu
- Monday 17 January 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- MATHIS Jérôme (TSE and University of Paris 8) : Entrusting Decision Making to Experts
- Monday 10 January 2011 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- HALPERN Joe (Cornell University) : Beyond Nash Equilibrium: Solution Concepts for the 21st Century
- Monday 13 December 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- HAFER Catherine (New York University) : Institutions for Debate
- Co-auteur(s) : Dimitri Landa
- Monday 6 December 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- EHUD Kalai (Northwestern University) : Stability in large Games with Heterogeneouns Players
- Monday 29 November 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- FLESCH Janos (Maastricht University) : Strategic disclosure of random variables
- Monday 22 November 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- WEIBULL Jorgen (Stockholm School of Economics) : Robustness to Strategic Uncertainty
- Monday 15 November 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- RITZBERGER Klaus (University of Vienna) : Applications of Index Theory in Nash Equilibrium refinements
- Monday 8 November 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- CRESSMAN Ross (Wilfried Laurier University) : Game Experiments on Cooperation through Punishment or Reward
- Monday 25 October 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- HEIFETZ Aviad (Open University of Israel) : Comprehensive Rationalizability
- Monday 18 October 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- LAMBERT-MOGILIANSKY Ariane (PSE) : Games with Type Inderteminate Players: Strategic Manipulation of Preferences
- Monday 11 October 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- BATTIGALLI PierPaolo (University of Bocconi) : Strategy and Interactive Beliefs in Dynamic Games
- Monday 4 October 2010 11:00-12:00
- Institute Henri Poicaré - Salle 314 ou 201
- SOSIC Greys (University of Southern California) : Stable Group Purchasing Organizations
- Monday 28 June 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- KOESSLER Frederic (PSE-CNRS) : Using or Hiding Private Information? An Experimental Study of Zero-Sum Repeated Games with Incomplete Information
- Monday 14 June 2010 11:00-12:00
- Institut Henri Poincare - Salle 314 ou 201
- RENOU Ludovic (Univ. Leicester) : Ordients: optimizations and comparative statics without utility function
- Monday 7 June 2010 11:20-12:20
- Institut Henri Poincare - Salle 314 ou 201
- DZIUDA Wioletta (Northwestern University) : Ongoing Negotiation with Endogenous Status Quo
- Monday 7 June 2010 10:00-11:00
- Institut Henri Poincare - Salle 314 ou 201
- AMIR Rabah (Univ. Arizona) : Discounted stochastic games with strategic complementarities.
- Monday 17 May 2010 11:00-12:00
- Institut Henri Poincare Salle 314 ou 201
- DHILLON Amrita (Warwick University) : Corporate Control and Multiple Large shareholders
- Monday 10 May 2010 11:00-12:00
- Institut Henri Poincaré - Salle 314 ou 201
- TAKAHASHI Satoru (Princeton University) : Recursive Methods in Discounted Stochastic Games: An Algorithm for delta ?1 and a Folk Theorem
- Monday 3 May 2010 11:00-12:00
- IHP - Salle 314 ou 201
- KALAI Ehud (Northwestern University) : Engineering Cooperation in Two Player Strategic Games
- Monday 12 April 2010 11:00-12:00
- Institut Henri Poincare
- GENSBITTEL Fabien (Université Paris 1) : Asymptotic behavior of repeated games with incomplete information and a linear payoff
- Monday 29 March 2010 11:00-12:00
- Institut Henri Poincare
- SAMUELSON Larry (Yale University) : Pricing in Matching Markets.
- Monday 22 March 2010 11:00-12:00
- Institut Henri Poincare
- ARIELI Itai (Hebrew University of Jerusalem) : Infinite sequential games with incomplete information.
- Monday 15 March 2010 11:00-12:00
- Institut Henri Poincare
- VIDA Peter (University of Vienna) : Bidder-Optimal Signal Structure in a First Price Auction.
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- Voluntary confinement
- with Dominique Baril-Tremblay and Lucie Ménager
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- Salle 01 (RDC), Centre Emile Borel, Institut Henri Poincaré, 11 rue Pierre et Marie Curie, 75005 Paris
- MERTIKOPOULOS Panayotis : No-Regret Learning in Games
- AbstractAbstract: In many cases of practical interest, the players of a repeated game may not know the structure of the game being played - simply think of commuters driving to work every day, ignorant of the number of commuters at each part of the road. In such cases, it is often assumed that players follow a no-regret procedure, i.e. an updating policiy that provably minimizes each player's individual regret against any possible play of their opponents. This talk focuses on the following question: does the sequence of play induced by a no-regret learning process converge to an equilibrium of the underlying stage game? I will present some recent contributions to this question (in both finite and continuous games), and I will discuss the impact of the feedback available to the players.