Acting is about empathy. It's about understanding the human condition.
The poor perpetually sell their time cheaply, yet can never buy it back.
欧洲不应是怀疑者的洲,而应是行动者的洲。
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。
数学不仅仅是关于数字、方程、计算或算法,而是关于理解。