说明：  具有遗传因子的最小二乘法 ，遗忘因子的作用是加强新的数据提供的信息量，逐渐削弱老的数据，防止数据饱和。
(The least squares method with genetic factors, the role of the forgetting factor is the amount of information provided by the new data, and to undermine the old data, prevent data saturation.)