Regret

Name

Regret -- Returns the gain from deviating to an action or strategy

Synopsis

Regret[profile->BEHAV, action->ACTION] =: NUMBER 
Regret[profile->MIXED, strategy->STRATEGY] =: NUMBER 

Description

Regret returns the gain to a player for deviating to action or strategy, respectively, assuming all players are following profile. A strategy profile is a Nash equilibrium if and only if the regrets of all actions or strategies are zero.