【479】cross-entropy与softmax的求导
cross-entropy 损失函数
$L = -ln(p_c) = -ln(softmax(y_c))$
$p_c = softmax(y_c) = \frac{e^{y_c}}{e^{y_1} + ... + e^{y_c} + ... + e^{y_n}}$
cross-entropy 损失函数
$L = -ln(p_c) = -ln(softmax(y_c))$
$p_c = softmax(y_c) = \frac{e^{y_c}}{e^{y_1} + ... + e^{y_c} + ... + e^{y_n}}$
