The best way to understand something is to try to change it.
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。
Tennis is a brutal sport. There are no draws. If you lose, you’re out.
一本好的图画书应该完全不需要文字也能表达。