成功辨识的关键是找到一个足够灵活的模型结构,以捕捉系统的基本特征,同时又足够简单,可以从现有数据中估计出来。
技术给了我们更聪明而不是更辛苦地捕鱼的工具。
You think when you wake up in the mornin yesterday don't count. But yesterday is all that does count. What else is there? Your life is made out of the days it's made out of. Nothin else.