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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Users as far away as Israel and Brazil said they shared the videos because they "got engagement" or to "join in on the trend". Several other accounts posting in Arabic, and that appear to be based in the Middle East, have also shared multiple videos about London being in decline - including the ones of Croydon.
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