用蒙特卡洛模拟的方法计算美式期权的价格以及基本描述,比较了软阈值，硬阈值及当今各种阈值计算方法,是一种双隐层反向传播神经网络。- Monte Carlo simulation method of calculating the American option price and basic descr iption, Comparison of soft threshold and hard threshold and today various threshold calculation me