New creates a new PolicyTable backed by a LevelDB database at the given path.

NewReservoirBuffer returns a new ReservoirBuffer with the given max number of samples, backed by a LevelDB database at the given directory path.

PolicyTable is a tabular CFR policy table that keeps all node policies on disk in a LevelDB database.

ReservoirBuffer implements a reservoir sampling buffer in which samples are stored in a LevelDB database.