pygambit.gambit.MixedBehaviorProfile.infoset_regrets#

MixedBehaviorProfile.infoset_regrets#

Returns the regret to the player for playing their mixed action at each information set, if all other players play according to the profile.

The regret is defined as the difference between the payoff of the best-response action and the payoff of the player’s mixed action. Payoffs are computed conditional on reaching the information set. By convention, the regret is always non-negative.

Regret is not defined for the chance player, which takes no decisions; its events are excluded.