 The key idea is to capture the high-level features extracted by the target network , and then reconstruct the input using the feedback network.
<meaning-changed>  The key idea is to capture the high-level features extracted by the target network , and then reconstruct the input using the feedback network.
 The key idea is to capture the high-level features from the victim model's feature extraction layers into the feedback network to reconstruct the input using the feedback network.