输出层偏导数：首先计算损失函数相对于输出层神经元输出的偏导数。这通常直接依赖于所选的损失函数。 You signed in with another tab or window. Reload to refresh your session. You signed out in An additional tab or window. Reload to refresh your session. You switched accounts on Yet another tab or window. Reload to refresh your session. 前向传播是神经网络通过层级结构和参数，将输入数据逐步转... https://backpr42601.onesmablog.com/backpr-site-fundamentals-explained-74620284