https://111qqz.com/en/tags/jacobian/Recent content in Jacobian on 111qqz's blogHugo -- gohugo.ioenhust.111qqz@gmail.com (111qqz)hust.111qqz@gmail.com (111qqz)© 2011-2026 111qqzSat, 12 Sep 2026 00:20:00 +0800https://111qqz.com/en/post/%E6%B7%B1%E5%BA%A6%E5%AD%A6%E4%B9%A0/2026-09-12-rnn-gradient-jacobian/Sat, 12 Sep 2026 00:20:00 +0800hust.111qqz@gmail.com (111qqz)https://111qqz.com/en/post/%E6%B7%B1%E5%BA%A6%E5%AD%A6%E4%B9%A0/2026-09-12-rnn-gradient-jacobian/<p>最近在重拾一些深度学习基础，发现了一个很有意思的视角。</p> <p>以前在看 RNN（Recurrent Neural Network）的长距离梯度传播公式时，总能看到一堆 Jacobian 矩阵的连乘，比如 \(\frac{\partial h_T}{\partial h_0} = J_T J_{T-1} \dots J_1\)。</p>