The key to successful identification is to find a model structure that is flexible enough to capture the essential features of the system, yet simple enough to be estimated from the available data.
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。
有权势的天子,也未必尊贵;穷苦的平民,也未必低贱。贵贱的分别,在于行为的美恶。
I'm a true believer that everything happens for a reason.