Update model_define.py

model_define.py

@@ -101,6 +101,7 @@ class ResNet(nn.Module):
         # Zero-initialize the last BN in each residual branch,
         # so that the residual branch starts with zeros, and each residual block behaves like an identity.
         # This improves the model by 0.2~0.3% according to https://arxiv.org/abs/1706.02677
+        #加入归一化层，对是否进行归一化进行判断
         if zero_init_residual:
             for m in self.modules():
                 if isinstance(m, Bottleneck):