https://zh-v2.d2l.ai/chapter_computer-vision/fine-tuning.html
codelab 中fine-tuning: loss 0.185, train acc 0.935, test acc 0.927 304.9 examples/sec on [device(type=‘cuda’, index=0)]. 确实像沐神说的,前面的知识跟transfer learning只能选择一个,那就是transfer learning。