Department of Economics and Finance
LUISS
Viale Romania 32
00196 Roma
November 15, 2018, 12:00 noon
Room 207
*Speaker: *Mathias Staudigl / Maastricht University
*Title: * *“Learning in Time Varying Games”*
*Abstract:*
*“In this paper, we examine the long-term behavior of regret minimizing agents in time-varying games with continuous action spaces. In its most basic form, (external) regret minimization guarantees that an agent’s cumulative payoff is no worse in the long run than that of the agent’s best fixed action in hindsight. Going beyond this worst-case guarantee, we consider a dynamic regret variant that compares the agent’s accrued rewards to those of any sequence of play. Specializing to a wide class of no-regret strategies based on mirror descent, we derive explicit rates of regret minimization relying only on imperfect gradient observations. We then leverage these results to show that players are able to stay close to Nash equilibrium in time-varying monotone games – and even converge to Nash equilibrium if the sequence of stage games admits a limit.”*
The calendar of the future seminars can be found at http://economiaefinanza.luiss.it/en/seminari/prossimi-seminari
******************************************************* Marco Scarsini Dipartimento di Economia e Finanza LUISS Viale Romania 32 00197 Roma, ITALY
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Marco Scarsini