From 47cab501eb482885699b919a78845349eafba8a7 Mon Sep 17 00:00:00 2001 From: HorusEyes <29286555+HorusJiang@users.noreply.github.com> Date: Sun, 1 Dec 2019 15:57:07 -0800 Subject: [PATCH] Typo update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - 公式3.30. ad 修改为 \alpha{\rm d} 修改原因: 更新速率 alpha 被错认为 a - Forward propagation, (4). g^{[2]}(z^{[z]}) 修改为 g^{[2]}(z^{[2]}) 修改原因: 第二层编号2被错认为z --- markdown/lesson1-week3.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/markdown/lesson1-week3.md b/markdown/lesson1-week3.md index fc2cae34..4b3a5d4f 100644 --- a/markdown/lesson1-week3.md +++ b/markdown/lesson1-week3.md @@ -644,7 +644,7 @@ ${d}W^{[2]} = \frac{{dJ}}{dW^{[2]}},{d}b^{[2]} = \frac{dJ}{db^{[2]}}$ 其中 公式3.30: -$W^{[1]}\implies{W^{[1]} - adW^{[1]}},b^{[1]}\implies{b^{[1]} -adb^{[1]}}$ +$W^{[1]}\implies{W^{[1]} - \alpha{\rm d}W^{[1]}},b^{[1]}\implies{b^{[1]} -\alpha{\rm d}b^{[1]}}$ 公式3.31: $W^{[2]}\implies{W^{[2]} - \alpha{\rm d}W^{[2]}},b^{[2]}\implies{b^{[2]} - \alpha{\rm d}b^{[2]}}$ @@ -657,7 +657,7 @@ $a^{[1]} = \sigma(z^{[1]})$ (3) $z^{[2]} = W^{[2]}a^{[1]} + b^{[2]}$ (4) -$a^{[2]} = g^{[2]}(z^{[z]}) = \sigma(z^{[2]})$ +$a^{[2]} = g^{[2]}(z^{[2]}) = \sigma(z^{[2]})$ 反向传播方程如下: