# @package _global_

offline_steps: 80000
online_steps: 0

eval_episodes: 1
eval_freq: 10000
save_freq: 100000
log_freq: 250

n_obs_steps: 1
# when temporal_agg=False, n_action_steps=horizon

override_dataset_stats:
  observation.images.top:
    # stats from imagenet, since we use a pretrained vision model
    mean: [[[0.485]], [[0.456]], [[0.406]]]  # (c,1,1)
    std: [[[0.229]], [[0.224]], [[0.225]]]  # (c,1,1)

# See `configuration_act.py` for more details.
policy:
  name: act

  pretrained_model_path:

  # Input / output structure.
  n_obs_steps: ${n_obs_steps}
  chunk_size: 100 # chunk_size
  n_action_steps: 100

  input_shapes:
    # TODO(rcadene, alexander-soare): add variables for height and width from the dataset/env?
    observation.images.top: [3, 480, 640]
    observation.state: ["${env.state_dim}"]
  output_shapes:
    action: ["${env.action_dim}"]

  # Normalization / Unnormalization
  input_normalization_modes:
    observation.images.top: mean_std
    observation.state: mean_std
  output_normalization_modes:
    action: mean_std

  # Architecture.
  # Vision backbone.
  vision_backbone: resnet18
  use_pretrained_backbone: true
  replace_final_stride_with_dilation: false
  # Transformer layers.
  pre_norm: false
  d_model: 512
  n_heads: 8
  dim_feedforward: 3200
  feedforward_activation: relu
  n_encoder_layers: 4
  n_decoder_layers: 1
  # VAE.
  use_vae: true
  latent_dim: 32
  n_vae_encoder_layers: 4

  # Inference.
  use_temporal_aggregation: false

  # Training and loss computation.
  dropout: 0.1
  kl_weight: 10.0

  # ---
  # TODO(alexander-soare): Remove these from the policy config.
  batch_size: 8
  lr: 1e-5
  lr_backbone: 1e-5
  weight_decay: 1e-4
  grad_clip_norm: 10
  utd: 1

  delta_timestamps:
    action: "[i / ${fps} for i in range(${policy.chunk_size})]"