BP神經網絡的函數關係就是不斷的進行函數複合,並不難理解。關鍵就是如何更新參數,計算每個參數的偏導數。如果每個參數單獨計算,難以從宏觀上把握參數之間的關係,下面是我基於向量和矩陣的推導過程。編輯公式太費勁,我就直接在稿紙上推導然後上傳。
BP反向誤差傳播推導
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