{
  "scenario_id": "f10_c05_preference_posttraining",
  "contract_version": "1.0.0",
  "dataset_snapshot_id": "pref_dataset_2026_06_08",
  "target_use": "pre_dpo_or_reward_model_audit",
  "required_fields": [
    "pair_id",
    "prompt_id",
    "task_family",
    "prompt",
    "chosen",
    "rejected",
    "preference_reason",
    "rubric_scores",
    "annotator_ids",
    "agreement",
    "chosen_reward_score",
    "rejected_reward_score",
    "chosen_tokens",
    "rejected_tokens",
    "source_policy",
    "created_at",
    "verifier_result"
  ],
  "required_rubric_keys": [
    "correctness",
    "evidence",
    "format",
    "cost"
  ],
  "min_pairs": 10,
  "min_task_families": 3,
  "min_avg_agreement": 0.72,
  "max_low_agreement_rate": 0.25,
  "min_chosen_win_rate": 0.75,
  "min_avg_reward_margin": 0.15,
  "max_negative_margin_rate": 0.15,
  "min_verifier_coverage": 0.70,
  "max_duplicate_pair_rate": 0.10,
  "max_reversed_conflicts": 0,
  "max_length_bias_ratio": 2.50,
  "low_agreement_threshold": 0.55
}