偏差和方差之间的权衡是机器学习中的一个基本概念。
The trade-off between bias and variance is a fundamental concept in machine learning.
所有模型都是错误的,但有些是有用的。
Don't watch the clock; do what it does. Keep going.
The world needs energy that is affordable, reliable and cleaner.
我们都会完成。也许我们中没有一个人真正理解我们所经历的一切,或者觉得我们有足够的时间。