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                # 損失(loss) > 機器學習模型關于單個樣本的預測值與真實值的差稱為**損失**。損失越小,模型越好,如果預測值與真實值相等,就是沒有損失。 > 用于計算損失的函數稱為**損失函數**。模型每一次預測的好壞用損失函數來度量。 ## 效果對比 只修改損失層,其他保持不變,訓練1000次后得到得準確率 > softmax:0.9433 > svm:0.9286
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