计算效率的概念是学习算法设计的核心。
The concept of computational efficiency is central to the design of learning algorithms.
I don’t take no for an answer.
Old paint on canvas, as it ages, sometimes becomes transparent. When that happens it is possible, in some pictures, to see the original lines: a tree will show through a woman's dress, a child makes way for a dog, a large boat is no longer on an open sea. That is called pentimento because the painter 'repented,' changed his mind. Perhaps it would be as well to say that the old conception, replaced by a later choice, is a way of seeing and then seeing again.
作为领导者，我们最强大的工具是我们自己的榜样。