{
  "n_samples": 500000,
  "original_n_samples": 60000,
  "expansion_ratio": 8.333333333333334,
  "pixel_mean": 0.1378921114481682,
  "pixel_std": 0.2971819772009055,
  "dtype": "uint8",
  "note": "images are uint8 in [0,255]; divide by 255.0 to restore [0,1] floats",
  "class_distribution": {
    "0": 49416,
    "1": 56130,
    "2": 49802,
    "3": 51168,
    "4": 48649,
    "5": 45312,
    "6": 49310,
    "7": 52130,
    "8": 48811,
    "9": 49272
  },
  "generation_method": "SupervisedSyntheticMNIST v1.0",
  "framework": "ODE-CCT Probability Expansion"
}