python-template/backend/test_output.json

{
  "paper_info": {
    "id": 1,
    "title": "2025年9月2日初中数学作业",
    "subject": "数学",
    "grade": "grade8"
  },
  "questions": [
    {
      "id": 1,
      "number": "1",
      "type": "single_choice",
      "subject": "数学",
      "grade": "grade8",
      "chapter": "",
      "difficulty": {
        "level": 3,
        "label": "中等",
        "stars": "★★★"
      },
      "score": {
        "total": 5.0,
        "formatted": "5.0分",
        "extracted_from_text": true
      },
      "estimated_time": {
        "minutes": 1.6,
        "seconds": 95,
        "formatted": "1.6分钟"
      },
      "stem": "解方程：(1) 2x² - 4x - 5 = 0；(2) (x - 3)(x - 1) = (x - 2)(x - 1) 5分",
      "options": [
        {
          "label": "A",
          "text": "x₁ = 2 + √7, x₂ = 2 - √7",
          "is_correct": false,
          "explanation": ""
        },
        {
          "label": "B",
          "text": "x₁ = 1, x₂ = 5",
          "is_correct": false,
          "explanation": ""
        },
        {
          "label": "C",
          "text": "x₁ = 3, x₂ = -1",
          "is_correct": false,
          "explanation": ""
        },
        {
          "label": "D",
          "text": "无解",
          "is_correct": false,
          "explanation": ""
        }
      ],
      "correct_answer": "A",
      "explanation": "对于方程(1)，使用求根公式可得解。对于方程(2)，两边同时除以(x-1)可得x-3 = x-2，此方程无解。",
      "analysis": "",
      "hints": [],
      "knowledge_points": [
        {
          "name": "一元二次方程",
          "category": "",
          "weight": 1.0
        },
        {
          "name": "求根公式",
          "category": "",
          "weight": 1.0
        }
      ],
      "images": [
        {
          "id": "img_1",
          "url": "/images/eq1.png",
          "alt": "方程图片",
          "type": "image",
          "width": null,
          "height": null,
          "format": "unknown"
        }
      ],
      "formulas": [],
      "audio": "",
      "video": "",
      "source": {
        "type": "auto_extracted",
        "method": "unknown",
        "paper": {
          "id": 1,
          "title": "2025年9月2日初中数学作业",
          "page": 1
        },
        "extraction_confidence": 0.8,
        "verified": false
      },
      "metadata": {
        "extraction_method": "manual",
        "original_format": "pdf",
        "language": "zh-CN",
        "tags": [],
        "notes": "",
        "page_spans": [],
        "source_text": ""
      },
      "statistics": {
        "created_at": "2024-01-15T10:30:00",
        "updated_at": "",
        "view_count": 0,
        "attempt_count": 0,
        "correct_count": 0,
        "accuracy_rate": 0.0
      },
      "variants": [
        {
          "number": "1",
          "type": "subquestion",
          "content": "2x² - 4x - 5 = 0；",
          "score": null
        }
      ],
      "validation": {
        "is_valid": true,
        "errors": [],
        "warnings": [],
        "completeness_score": 1.0
      }
    },
    {
      "id": 2,
      "number": "2",
      "type": "essay",
      "subject": "数学",
      "grade": "grade8",
      "chapter": "",
      "difficulty": {
        "level": 4,
        "label": "较难",
        "stars": "★★★★"
      },
      "score": {
        "total": 8.0,
        "formatted": "8.0分",
        "extracted_from_text": false
      },
      "estimated_time": {
        "minutes": 20.2,
        "seconds": 1210,
        "formatted": "20.2分钟"
      },
      "stem": "如图，在△ABC 中，AB = AC，D、E 分别是AB、BC 的中点，BF ∥ DE，EF ∥ DB。求证：四边形BDEF 是菱形；若 BE = 4，AC = 5，求DM 的长。",
      "options": [],
      "correct_answer": "证明：由于D、E是中点，BF∥DE，EF∥DB，可得四边形BDEF是平行四边形。又因为BF=EF（中位线相等），所以是菱形。DM = 3",
      "explanation": "本题考查中位线定理和菱形的判定与性质。",
      "analysis": "",
      "hints": [],
      "knowledge_points": [
        {
          "name": "中位线定理",
          "category": "",
          "weight": 1.0
        },
        {
          "name": "菱形的判定",
          "category": "",
          "weight": 1.0
        },
        {
          "name": "勾股定理",
          "category": "",
          "weight": 1.0
        }
      ],
      "images": [],
      "formulas": [],
      "audio": "",
      "video": "",
      "source": {
        "type": "auto_extracted",
        "method": "unknown",
        "paper": {
          "id": 1,
          "title": "2025年9月2日初中数学作业",
          "page": 1
        },
        "extraction_confidence": 0.8,
        "verified": false
      },
      "metadata": {
        "extraction_method": "manual",
        "original_format": "pdf",
        "language": "zh-CN",
        "tags": [],
        "notes": "",
        "page_spans": [],
        "source_text": ""
      },
      "statistics": {
        "created_at": "2024-01-15T10:31:00",
        "updated_at": "",
        "view_count": 0,
        "attempt_count": 0,
        "correct_count": 0,
        "accuracy_rate": 0.0
      },
      "variants": [],
      "validation": {
        "is_valid": true,
        "errors": [],
        "warnings": [],
        "completeness_score": 0.75
      }
    }
  ],
  "statistics": {
    "total_questions": 2,
    "question_types": {
      "single_choice": 1,
      "essay": 1
    },
    "difficulty_distribution": {
      "简单": 0,
      "较易": 0,
      "中等": 1,
      "较难": 1,
      "困难": 0
    },
    "total_score": 13.0,
    "estimated_time": 21.8,
    "knowledge_points": [
      "勾股定理",
      "求根公式",
      "一元二次方程",
      "菱形的判定",
      "中位线定理"
    ],
    "has_images": 1,
    "average_accuracy": 0.0,
    "estimated_time_formatted": "21分钟"
  },
  "processing_errors": [],
  "export_info": {
    "exported_at": "2025-11-01T22:15:59.583605",
    "total_questions": 2,
    "error_count": 0,
    "format_version": "2.0"
  }
}