"Coping with selfish on-going behaviors"
Orna Kupferman (Hebrew University) 

A rational and selfish environment may have an incentive to cheat the
system it interacts with. Cheating the system amounts to reporting a
stream of inputs that is different from the one corresponding to the
real behavior of the environment. The system may cope with cheating by
charging penalties to cheats it detects. We formalize and study this
setting by means of weighted automata and their resilience to selfish
environments.  (Joint work with Tami Tamir.)