PAC学习框架提供了一种形式化的方法来量化概念类的可学习性。
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
Every decision we make today about ocean resources will echo for decades in marine ecosystems.
"The beauty of quantum mechanics lies in its ability to reveal the hidden connections between seemingly unrelated phenomena."
任何经济中最重要的资源是其人民。
The best performance improvement is the transition from the nonworking state to the working state.