{
  "num_features": 32768,
  "num_layers": 12,
  "d_model": 768,
  "activation_fn": "topk",
  "topk_k": 16,
  "topk_straight_through": true,
  "topk_mode": "per_layer",
  "decoder_tying": "none",
  "enable_feature_offset": false,
  "enable_feature_scale": false,
  "skip_connection": false,
  "normalization_method": "mean_std"
}