exacity / exacity/deeplearningbook-chinese
公式2.58 #pdf 43页 #出版物30页
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Description
>x ⊤ x − x ⊤ g(c) − g(c) ⊤ x + g(c) ⊤ g(c) (2.57)
(分配律)
= x ⊤ x − 2x ⊤ g(c) + g(c) ⊤ g(c) (2.58)
从2.57 推到2.58应当是交换律吧 怎么会是分配率呢？
不应该是根据 交换律得到 x ⊤ g(c) = g(c) ⊤ x 才有了2x ⊤ g(c)
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