In machine learning, the trade-off between bias and variance is crucial for achieving good generalization.
天要使一个人遭祸,必先给他一点小小的好处使他轻信;天要使一个人受福,必先给他一点小小的祸患使他有所警惕。
I don't believe in the concept of a 'leading man'. I believe in the concept of a 'leading human being'.