2019-08-29 Bootstrapとは？ 強化学習 Bootstrappingとは、推定をもとに推定をすること！参考： https://datascience.stackexchange.com/questions/30714/what-is-the-difference-between-bootstrapping-and-sampling-in-reinforcement-learn#targetText=Bootstrapping%3A%20When%20you%20estimate%20something,actions%20of%20the%20next%20state.
