请问单bottom的concat层用意是什么啊？

ChenYingpeng / caffe-yolov3

A real-time object detection framework of Yolov3/v4 based on caffe

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Open evercherish opened 4 years ago

evercherish commented 4 years ago

注意到作者提供的yolov3.prototxt里面，layer84-route和layer96-route作为concat层，但是其本身只接受一个输入，请问这样做的用意是什么呀？