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。
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Last week, we missed that Shoresy Season 5 had arrived on Hulu. My sincere apologies, as this show is perfectly suited to snowy days and frustrating times. A spin-off from the hilarious Canadian comedy series Letterkenny, Shoresy takes the eponymous foul-mouthed hockey player (portrayed by series creator Jared Keeso) into new terrain: vulnerability. Think Heated Rivalry, with less sex and more "your mom" jokes.