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Epistemic equivalence of extended belief hierarchies

Tsakas, Elias - In: Games and Economic Behavior 86 (2014) C, pp. 126-144

In this paper, we introduce a notion of epistemic equivalence between hierarchies of conditional beliefs and hierarchies of lexicographic beliefs, thus extending the standard equivalence results of Halpern (2010) and Brandenburger et al. (2007) to an interactive setting, and we show that there...

Persistent link: https://www.econbiz.de/10010785196

Judgment aggregation in search for the truth

Bozbay, İrem; Dietrich, Franz; Peters, Hans - In: Games and Economic Behavior 87 (2014) C, pp. 571-590

judgments manage to efficiently use all voters' private information. While new in judgment aggregation theory, this perspective …

Persistent link: https://www.econbiz.de/10011049697

Unawareness, beliefs, and speculative trade

Heifetz, Aviad; Meier, Martin; Schipper, Burkhard C. - In: Games and Economic Behavior 77 (2013) 1, pp. 100-121

We define a generalized state-space model with interactive unawareness and probabilistic beliefs. Such models are desirable for potential applications of asymmetric unawareness. Applying our unawareness belief structures, we show that the common prior assumption is too weak to rule out...

Persistent link: https://www.econbiz.de/10011049829

Cooperative strategies in anonymous economies: An experiment

Camera, Gabriele; Casari, Marco; Bigoni, Maria - In: Games and Economic Behavior 75 (2012) 2, pp. 570-586

discuss alternative methodologies and implications for theory. …

Persistent link: https://www.econbiz.de/10011049838

Dynamic unawareness and rationalizable behavior

Heifetz, Aviad; Meier, Martin; Schipper, Burkhard C. - In: Games and Economic Behavior 81 (2013) C, pp. 50-68

We define generalized extensive-form games which allow for asymmetric awareness of actions. We extend Pearceʼs (1984) notion of extensive-form (correlated) rationalizability to this setting, explore its properties, and prove existence.

Persistent link: https://www.econbiz.de/10011049860

Conditional belief types

Di Tillio, Alfredo; Halpern, Joseph Y.; Samet, Dov - In: Games and Economic Behavior 87 (2014) C, pp. 253-268

We study type spaces where a player's type at a state is a conditional probability on the space. We axiomatize these spaces using conditional belief operators, examining three additional axioms of increasing strength. First, introspection, which requires the agent to be unconditionally certain...

Persistent link: https://www.econbiz.de/10010931186

Pattern recognition and subjective belief learning in a repeated constant-sum game

Spiliopoulos, Leonidas - In: Games and Economic Behavior 75 (2012) 2, pp. 921-935

This paper aspires to fill a conspicuous gap in the literature regarding learning in games—the absence of empirical … verification of learning rules involving pattern recognition. Weighted fictitious play is extended to detect two-period patterns in … adequately represent the complete learning process of game players. Additionally, standard weighted fictitious play models are …

Persistent link: https://www.econbiz.de/10011049668

Beyond fictitious play beliefs: Incorporating pattern recognition and similarity matching

Spiliopoulos, Leonidas - In: Games and Economic Behavior 81 (2013) C, pp. 69-85

Belief models capable of detecting 2- to 5-period patterns in repeated games by matching the current historical context to similar realizations of past play are presented. The models are implemented in a cognitive framework, ACT-R, and vary in how they implement similarity-based...

Persistent link: https://www.econbiz.de/10011049875

Learning across games

Mengel, Friederike - In: Games and Economic Behavior 74 (2012) 2, pp. 601-619

This paper studies the learning process carried out by two agents who are involved in many games. As distinguishing all …. Partitions of higher cardinality are more costly. A process of simultaneous learning of actions and partitions is presented and … equilibrium partitions and action choices characterized. Learning across games can destabilize strict Nash equilibria even for …

Persistent link: https://www.econbiz.de/10011049900

Characterizing stability properties in games with strategic substitutes

Roy, Sunanda; Sabarwal, Tarun - In: Games and Economic Behavior 75 (2012) 1, pp. 337-353

In games with strategic substitutes (GSS), convergence of the best-response dynamic starting from the inf (or sup) of the strategy space is equivalent to global stability (convergence of every adaptive dynamic to the same pure strategy Nash equilibrium). Consequently, in GSS, global stability...

Persistent link: https://www.econbiz.de/10010573656