batch_size: 8
iters: 80000

model:
  type: SeaFormerSeg
  backbone: 
    type: SeaFormer_small
    pretrained: https://bj.bcebos.com/paddleseg/dygraph/ade20k/backbone/seaformer_small_imagenet_pretrained.pdparams
  num_classes: 150
  head_channels: 128
  embed_dims: [96, 128]
  is_dw: True
  dropout_ratio: 0.1
  align_corners: False
  input_transform: 'multiple_select'

train_dataset:
  type: Dataset
  dataset_root: data/Cityscapes/
  train_path: datasets/Cityscapes/train.txt
  num_classes: 19
  transforms:
    - type: ResizeStepScaling
      min_scale_factor: 0.5
      max_scale_factor: 2.0
      scale_step_size: 0.25
    - type: RandomPaddingCrop
      crop_size: [512, 512]
    - type: RandomHorizontalFlip
    - type: RandomDistort
      brightness_range: 0.4
      contrast_range: 0.4
      saturation_range: 0.4
    - type: Normalize
  mode: train

val_dataset:
  type: Dataset
  dataset_root: datasets/Cityscapes
  val_path: datasets/Cityscapes/val.txt
  num_classes: 19
  transforms:
    - type: Normalize
  mode: val

optimizer:
  type: AdamW
  beta1: 0.9
  beta2: 0.999
  weight_decay: 0.01
  custom_cfg:
    - name: pos_emb
      weight_decay_mult: 0.0
    - name: head
      lr_mult: 10.0
    - name: norm
      weight_decay_mult: 0.0

lr_scheduler:
  type: PolynomialDecay
  learning_rate: 0.00025
  power: 1.0
  warmup_iters: 1500
  warmup_start_lr: 1.0e-6
  end_lr: 0

loss:
  types:
    - type: CrossEntropyLoss
  coef: [1]