{
  "task_id": "collect_hot_topics_1777388114",
  "collection_type": "hot_topics",
  "collected_at": "2026-04-28T22:55:19.149542",
  "topics": [
    {
      "material_id": "hot_topic_20260428_225519_1",
      "title": "AI视频生成技术新突破",
      "content": "最新AI视频生成技术可实现高精度人物动作和场景生成...",
      "source": "tech_community",
      "tags": [
        "AI",
        "视频生成",
        "技术突破"
      ],
      "relevance_score": 0.95,
      "quality_score": 0.88
    },
    {
      "material_id": "hot_topic_20260428_225519_2",
      "title": "短视频创作趋势分析",
      "content": "2024年短视频创作趋势：互动式内容、知识分享、情感共鸣...",
      "source": "content_analysis",
      "tags": [
        "短视频",
        "趋势分析",
        "内容创作"
      ],
      "relevance_score": 0.92,
      "quality_score": 0.85
    }
  ]
}