{
  "course": "概率论与数理统计",
  "chapter": "第4章：条件概率、贝叶斯公式与独立性",
  "learner": "林晓",
  "platform_rule_version": "2026-07-30",
  "attempts": [
    {
      "round": 1,
      "submitted_at": "2026-07-22T21:14:00+08:00",
      "correct": 8,
      "total": 16,
      "score_percent": 50.0,
      "core_gates": {
        "条件方向": "1/4，未通过",
        "解释": "1/3，未通过",
        "迁移": "0/3，未通过"
      },
      "self_report_before_submit": "公式基本会，主要是计算粗心"
    },
    {
      "round": 2,
      "submitted_at": "2026-07-25T19:52:00+08:00",
      "correct": 11,
      "total": 16,
      "score_percent": 68.75,
      "core_gates": {
        "条件方向": "2/4，未通过",
        "解释": "2/3，通过",
        "迁移": "1/3，未通过"
      },
      "self_report_before_submit": "贝叶斯公式会用了，方向偶尔看反"
    },
    {
      "round": 3,
      "submitted_at": "2026-08-02T20:56:00+08:00",
      "correct": 12,
      "total": 16,
      "score_percent": 75.0,
      "core_gates": {
        "条件方向": "2/4，未通过",
        "解释": "2/3，通过",
        "迁移": "1/3，未通过"
      },
      "self_report_before_submit": "总分过线，应该已经掌握"
    }
  ],
  "platform_diagnosis": {
    "overall": "待巩固",
    "recurring_high_confidence_errors": ["Q104", "Q203", "Q303", "Q311"],
    "priority": [
      "先区分 P(A|B) 与 P(B|A)",
      "再用人数表理解基准率",
      "最后区分独立与互斥并做迁移题"
    ]
  }
}