{
  "global_step": 260000,
  "epoch": 23,
  "is_best": false,
  "metrics": {
    "loss": 1.1569782951654761,
    "perplexity": 3.180308787818537,
    "cer": 0.7612203028973477,
    "token_accuracy": 0.023255956607474697,
    "timestamp_accuracy": 0.03933253873659118,
    "timestamp_correct": 33,
    "timestamp_total": 839,
    "num_samples": 40
  }
}