{
  "dataset_name": "ASL Citizen",
  "dataset_source": "Kaggle ASL Citizen keypoints-200",
  "input_root": "/kaggle/input/datasets/nguyenchitinh/asl-citizen/keypoints-200",
  "original_format": "(T, 75, 4)",
  "used_format": "(T, 75, 3)",
  "dropped_feature": "4th value, likely visibility/confidence",
  "landmark_structure": {
    "pose": "33 landmarks",
    "left_hand": "21 landmarks",
    "right_hand": "21 landmarks",
    "total": 75
  },
  "normalization": "shoulder center subtraction and shoulder width scaling",
  "target_len": 200,
  "flattened_position_dim": 225,
  "use_velocity": true,
  "final_feature_dim": 450,
  "save_dtype": "float16",
  "shard_size": 256,
  "min_samples_per_class": 1,
  "val_ratio_from_train_folder": 0.1,
  "seed": 42,
  "splits": {
    "train": {
      "split": "train",
      "samples": 6090,
      "bad_files": 0,
      "shards": 24,
      "manifest": "/kaggle/working/asl_citizen_processed_200/metadata/train_manifest.csv",
      "bad_file_report": null
    },
    "val": {
      "split": "val",
      "samples": 654,
      "bad_files": 0,
      "shards": 3,
      "manifest": "/kaggle/working/asl_citizen_processed_200/metadata/val_manifest.csv",
      "bad_file_report": null
    },
    "test": {
      "split": "test",
      "samples": 3552,
      "bad_files": 0,
      "shards": 14,
      "manifest": "/kaggle/working/asl_citizen_processed_200/metadata/test_manifest.csv",
      "bad_file_report": null
    }
  },
  "num_classes": 200
}