为什么需要非线性？ 想象一下，如果网络里每一层都是线性的（比如 y=Wx+b），无论堆叠多少层，最终网络都只是一条线性映射。深度堆叠就没有意义了，网络的表达能力非常有限。
"Whether it's our children, partners, bosses, it can affect everybody and everything," she said.
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Plant-based syrup, such as glucose syrup derived from sugar cane, can be half the price of genuine honey, or even less.
On the other hand, Grammarly offers a Premium subscription for $30/month for a monthly plan $20/month for quarterly, and $12/month for an annual subscription.
如果将 iPhone 发布的 2007 年视为智能手机的元年，那么到今天，已经狂奔了近二十年。