experiment: dinov3_binary_flip_letterbox
task: binary_orientation

hf_dataset: BDRC/dinov3-binary-page-orientation-dataset
# data_dir: ../../Data/source
# flipped_data_dir: ../../Data/flipped_source
# splits_json: ../../Data/split.json
exclude_manifest: ../../config/benchmark_page_ids.json
output_dir: checkpoints

model_id: facebook/dinov3-vits16-pretrain-lvd1689m
seed: 42
train_ratio: 0.8
val_ratio: 0.1
test_ratio: 0.1
batch_size: 16
num_workers: 0
image_verify_workers: 16
no_amp: false
gradient_checkpointing: true
skip_stage_c: false

train_preprocess: center_crop
val_preprocess: center_crop
test_preprocess: center_crop
preprocess_size: 448

epochs_a: 5
epochs_b: 10
epochs_c: 8

lr_head_a: 5.0e-4
lr_backbone_b: 5.0e-6
lr_head_b: 5.0e-5
lr_backbone_c: 2.0e-6
lr_head_c: 1.0e-5
unfreeze_blocks_b: 4
unfreeze_blocks_c: 8

scheduler: cosine_warmup
warmup_epochs_a: 0
warmup_epochs_b: 2
warmup_epochs_c: 2
warmup_start_factor: 0.01
min_lr_ratio: 0.0

weight_decay: 0.01
grad_clip_norm: 1.0
dropout: 0.1
label_smoothing: 0.05

class_weight_mode: none

lambda_consistency: 0.5
flip_op: rot180

early_stop_patience: 3
early_stop_min_delta: 0.001