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UID:20250723T083647EDT-6737NK8I0L@132.216.98.100
DTSTAMP:20250723T123647Z
DESCRIPTION:Informal Systems Seminar (ISS) Centre for Intelligent Machines 
 (CIM) and Groupe d'Etudes et de Recherche en Analyse des Decisions (GERAD)
 \n	\n	*Note that this is a hybrid event*\n	Zoom Link\n	Meeting ID: 845 1388 10
 04       \n	Passcode: VISS\n	\n	Speaker: Bora Yongacoglu\n	\n	Abstract: In this
  talk\, we will study a discrete-time model of mean-field games with finit
 ely many players and partial observability of the global state\, and we wi
 ll describe the deep connection between such n-player mean-field games and
  partially observed Markov decision problems (POMDPs). We focus primarily 
 on settings with mean-field observability\, where each player privately ob
 serves its own local state as well as the complete mean-field distribution
 . We prove that if one's counterparts use symmetric  stationary memoryless
  policies\, then a given agent faces a fully observed\, time homogenous MD
 P. We leverage this to prove the existence of a memoryless\, stationary pe
 rfect equilibrium in the n-player game with mean-field observability. We a
 lso show\, by example\, that the symmetry condition cannot be relaxed with
 out loss of generality. Under narrower observation channels\, in which the
  mean-field information is compressed before being observed by each agent\
 , we show that the agent faces a POMDP rather than an MDP\, even when its 
 counterparts use symmetric policies.\n	\n	Bio : Bora Yongacoglu is a post-do
 ctoral fellow in the Department of Electrical and Computer Engineering at 
 University of Toronto\, where he studies learning in multi-agent systems. 
 He received his PhD and MSc. degrees in mathematics from Queen's Universit
 y\, and his B.A. in mathematics and economics from 51³Ô¹ÏÍø.\n
DTSTART:20231117T153000Z
DTEND:20231117T163000Z
LOCATION:Zames Seminar Room\, MC 437\, McConnell Engineering Building\, CA\
 , QC\, Montreal\, H3A 0E9\, 3480 rue University
SUMMARY:Connections between POMDPs and partially observed n-player mean-fie
 ld games
URL:/cim/channels/event/connections-between-pomdps-and
 -partially-observed-n-player-mean-field-games-352735
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