我们必须接受失望,因为它是有限的,但千万不可失去希望,因为它是无限的。
系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。
A wise man said: before you speak, let your words pass through three gates. At the first gate, ask yourself, "Is it true?" At the second gate, ask "Is it necessary?" At the third gate, ask, "Is it kind?"