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Visualization results of the three schemes. (A) Grad-Cam method for visualization of the feature maps output by the Resnet50 convolutional layer. (B) Grad-Cam method for visualization of the feature maps output from the max-pooling layer of the standard model. (C) Grad-Cam method for visualization of the tokens of the standard model. (D) Directly map the attention of the classification token on feature tokens to the original image.
