training_config.json

{
  "base_model": "KPF/KPF-bert-ner",
  "dataset": "townboy/korean-pii-dataset",
  "dataset_config": "bio",
  "batch_size": 4,
  "validation_batch_size": 8,
  "gradient_accumulation_steps": 8,
  "effective_batch_size": 32,
  "max_length": 512,
  "early_stopping_patience": 1,
  "loss": "standard_cross_entropy",
  "class_weighted": false,
  "train_rows": 9227,
  "validation_rows": 1510,
  "optimizer_steps_per_epoch": 289,
  "final_refinement_stages": [
    {
      "purpose": "Korean RRN/alien-number counterfactual context learning",
      "epochs": 1,
      "learning_rate": 5e-06,
      "seed": 20260824,
      "corpus": "public corpus with counterfactual Korean-ID contexts"
    },
    {
      "purpose": "general-label rehearsal and stabilization",
      "epochs": 1,
      "learning_rate": 1e-06,
      "seed": 20260825,
      "corpus": "pre-counterfactual corpus snapshot"
    }
  ]
}