Sample one child of the given Chance node, according to its probability distribution.

SampleOne returns the first element i of pv where sum(pv[:i]) > x.

AverageStrategySampler implements cfr.Sampler by sampling some player actions according to the current average strategy strategy.

ExternalSampler implements cfr.Sampler by sampling all player actions.

MultiOutcomeSampler implements cfr.Sampler by sampling at most k player actions with probability according to the current strategy.

OutcomeSampler implements cfr.Sampler by sampling one player action according to the current strategy.

RobustSampler implements cfr.Sampler by sampling a fixed number of actions uniformly randomly.