Abstract
It is frequently suggested that predictions made by game theory could be improved by considering computational restrictions when modeling agents. Under the supposition that players in a game may desire to balance maximization of payoff with minimization of strategy complexity, Rubinstein and co-authors studied forms of Nash equilibrium where strategies are maximally simplified in that no strategy can be further simplified without sacrificing payoff. Inspired by this line of work, we introduce a notion of equilibrium whereby strategies are also maximally simplified, but with respect to a simplification procedure that is more careful in that a player will not simplify if the simplification incents other players to deviate. We study such equilibria in two-player machine games in which players choose finite automata that succinctly represent strategies for repeated games; in this context, we present techniques for establishing that an outcome is at equilibrium and present results on the structure of equilibria.
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References
Abreu D, Rubinstein A (1988) The structure of Nash equilibrium in repeated games with finite automata. Econometrica 56(6): 1259–1281
Anderlini L (1990) Some notes on church’s thesis and the theory of games. Theory Decis 29: 19–52
Aumann R (1992) Perspectives on bounded rationality. In: Proceedings of 4th international conference on theoretical aspects of reasoning about knowledge, pp 108–117
Banks J, Sundaram R (1990) Repeated games finite automata and complexity. Games Econ Behav 2: 97–117
Ben-Porath E (1990) The complexity of computing a best response automaton in repeated games with mixed strategies. Games Econ Behav 2: 1–12
Ben-Porath E (1993) Repeated games with finite automata. J Econ Theory 59: 17–32
Ben-Sasson E, Kalai A, Kalai E (2006) An approach to bounded rationality. In: Advances in neural information processing systems, vol 19 (Proc. of NIPS), pp 145–152
Binmore K (1987) Modeling rational players I. Econ Philos 3: 179–214
Binmore K (1988) Modeling rational players II. Econ Philos 4: 9–55
David C (1988) Rationality computability and Nash equilibrium. Econometrica 60(4): 877–888
Fortnow L (2009) Program equilibria and discounted computation time. In: Proceedings of the 12th conference on theoretical aspects of rationality and knowledge, TARK ’09, ACM, New York, pp 128–133
Fortnow L, Santhanam R (2009) Bounding rationality by discounting time. CoRR. abs/0911.3162
Gilboa I (1988) The complexity of computing best response automata in repeated games. J Econ Theory 45: 342–352
Gossner O (1999) Repeated games played by cryptographically sophisticated players. Working paper
Halpern JY, Pass R (2008) Game theory with costly computation. CoRR. abs/0809.0024
Howard JV (1988) Cooperation in the prisoner’s dilemma. Theory Decis 24(3): 203–213
Kalai E (1990) Bounded rationality and strategic complexity in repeated games. In: Game theory and applications. Academic Press, San Diego, pp 131–157
Kalai E, Stanford W (1988) Finite rationality and interpersonal complexity in repeated games. Econometrica 56: 397–410
Megiddo N, Wigderson A (1986) On play by means of computing machines. In: Proceedings of the 1986 conference on theoretical aspects of reasoning about knowledge, pp 259–274
Neyman A (1985) Bounded complexity justifies cooperation in the finitely repeated prisoners’ dilemma. Econ Lett 19: 227–229
Neyman A (1997) Cooperation repetition and automata. In: Hart S, Mas Colell A (eds) Cooperation: game-theoretic approaches. NATO ASI Series F, vol 155. Springer-Verlag, Berlin, pp 233–255
Osborne M, Rubinstein A (1994) A course in game theory. MIT Press, Cambridge
Papadimitriou CH (1992) On players with a bounded number of states. Games Econ Behav 4: 122–131
Papadimitriou CH, Yannakakis M (1994) On complexity as bounded rationality (extended abstract). In: ACM symposium on theory of computing, pp 726–733
Piccione M, Rubinstein A (1993) Finite automata play a repeated extensive game. J Econ Theory 61: 160–168
Rubinstein A (1986) Finite automata play the repeated prisoner’s dilemma. J Econ Theory 38: 83–96
Rubinstein A (1998) Modeling bounded rationality. MIT Press, Cambridge
Simon H (1969) The sciences of the artificial. MIT Press, Cambridge
Spiegler R (2004) Simplicity of beliefs and delay tactics in a concession game. Games Econ Behav 47: 200–220
Spiegler R (2005) Testing threats in repeated games. J Econ Theory 121: 214–235
Tennenholtz M (2004) Program equilibrium. Games Econ Behav 49: 363–373
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Chen, H. Bounded rationality, strategy simplification, and equilibrium. Int J Game Theory 42, 593–611 (2013). https://doi.org/10.1007/s00182-011-0293-7
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DOI: https://doi.org/10.1007/s00182-011-0293-7