Grad-【論文筆記】CAM: Visual Explanations from Deep Networks via Gradient-based Localization

參考自： https://www.jianshu.com/p/1d7b5c4ecb93 定義Grad-CAM中第k個特徵圖對類別c的權重爲 α k c \alpha_k^c αkc​， α k c = 1 Z ∑ i ∑ j ∂ y c ∂ A i j k \alpha_k^c=\frac{1}{Z}\sum\limits_{i}\sum\limits_{j}\frac{\partial y^c}

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