经典网络模型介绍
=======================
.. toctree::
   net/lenet5.md
   net/RegNet.md
   net/RepVGG.md
   net/ShuffleNet_v2.md
   net/VGG.md
   net/mobilenet.md
   net/ResNet.md
   net/ResNeXt.md
   net/FasterRCNN.md 
   net/Mask_RCNN.md 
   net/SSD_Lite.md
   net/Yolov3.md