text: _base_ = [
      '../_base_/models/r18.py',
      '../_base_/datasets/cifar10_sz224_4xbs64.py',
      '../_base_/default_runtime.py',
  ]
  
  # model settings
  model = dict(
      backbone=dict(frozen_stages=4),
      head=dict(num_classes=10))
  
  # optimizer
  optimizer = dict(type='SGD', lr=0.1, momentum=0.9, weight_decay=0.)
  
  # learning policy
  lr_config = dict(policy='step', step=[60, 80])
  
  # runtime settings
  runner = dict(type='EpochBasedRunner', max_epochs=100)
  