text: optimizer = dict(
      type='SGD', lr=0.02, momentum=0.9, weight_decay=0.00001)  # 1e-4 -> 1e-5
  optimizer_config = dict(grad_clip=None)
  lr_scaler = dict(
      policy='linear',
      base_lr=0.0001875,  # 0.00125 -> 0.0001875
  )
  lr_config = dict(
      policy='step',
      warmup='linear',
      warmup_iters=1,
      warmup_ratio=0.001,
      warmup_by_epoch=True,
      gamma=0.2,
      step=[9, 12])
  total_epochs = 13
  