Title
Partially-Observed Discrete-Time Risk-Sensitive Mean-Field Games
Abstract
We consider in this paper a general class of discrete-time partially-observed mean-field games with Polish state, action, and measurement spaces and with risk-sensitive (exponential) cost functions which capture the risk-averse behaviour of each agent. As standard in mean-field game models, here each agent is weakly coupled with the rest of the population through its individual cost and state dynamics via the empirical distribution of the states. We first establish the mean-field equilibrium in the infinite-population limit by first transforming the risk-sensitive problem to one with risk-neutral (that is, additive instead of multiplicative) cost function, and then employing the technique of converting the underlying original partially-observed stochastic control problem to a fully observed one on the belief space and the principle of dynamic programming. Then, we show that the mean-field equilibrium policy, when adopted by each agent, forms an approximate Nash equilibrium for games with sufficiently many agents.
Year
DOI
Venue
2019
10.1109/CDC40024.2019.9029343
2019 IEEE 58th Conference on Decision and Control (CDC)
Keywords
DocType
ISSN
approximate Nash equilibrium,dynamic programming,partially-observed stochastic control problem,mean-field equilibrium policy,state dynamics,mean-field game models,risk-averse behaviour,risk-sensitive cost functions,partially-observed discrete-time risk-sensitive mean-field games
Conference
0743-1546
ISBN
Citations 
PageRank 
978-1-7281-1399-9
0
0.34
References 
Authors
10
3
Name
Order
Citations
PageRank
Naci Saldi12910.27
Tamer Basar23497402.11
Maxim Raginsky377160.65