[
  {
    "id": "P01",
    "title": "Mixed-Initiative Design of Game Levels: Integrating Mission and Space into Level Generation",
    "authors": [
      "Daniël Karavolos",
      "Anders Bouwer",
      "Rafael Bidarra"
    ],
    "published": "2015",
    "url": "https://livegamedesign.github.io/assets/FDG2015_Karavolos.pdf",
    "type": "primary_research_case_studies",
    "coverage": "全文8页，图1-3、表1；图1-3所在PDF第3、5页另经渲染查看",
    "accessed": "2026-09-12",
    "local_note": "../../docs/level-design-knowledge/01-mission-space.md",
    "limitations": "两个系统案例，无玩家对照实验；选择性保留本轮局部是未来工作"
  },
  {
    "id": "P03",
    "title": "Automatic Game Progression Design through Analysis of Solution Features",
    "authors": [
      "Eric Butler",
      "Erik Andersen",
      "Adam M. Smith",
      "Sumit Gulwani",
      "Zoran Popović"
    ],
    "published": "2015",
    "url": "https://www.ericbutler.net/assets/papers/chi2015_progression.pdf",
    "doi": "10.1145/2702123.2702330",
    "type": "primary_research_experiment",
    "coverage": "正文方法、生成、排序、实验、讨论与结论；10页PDF核对页位，图3-4所在第8页另渲染检查；未追读参考文献",
    "accessed": "2026-09-12",
    "local_note": "../../docs/level-design-knowledge/03-progression-and-difficulty.md",
    "limitations": "2377人，短期时间无显著差异不等价于等效性证明；缺随机序列对照；参考解共有图前提"
  },
  {
    "id": "P04",
    "title": "Difficulty Modelling in Mobile Puzzle Games: An Empirical Study on Different Methods to Combine Player Analytics and Simulated Data",
    "authors": [
      "Jeppe Theiss Kristensen",
      "Paolo Burelli"
    ],
    "published": "2024",
    "url": "https://arxiv.org/html/2401.17436",
    "type": "primary_research_experiment",
    "coverage": "摘要与第3-9节重点阅读；未复现实验、未逐篇读引文",
    "accessed": "2026-09-12",
    "local_note": "../../docs/level-design-knowledge/03-progression-and-difficulty.md",
    "limitations": "Lily's Garden前500关，样本只含至少玩200关者，不能代替新用户研究；新关群体预测与个人预测分开"
  },
  {
    "id": "C-TALK-ROOT",
    "title": "立项一波三折、AI包办关卡：《一箭又一箭》团队分享简单玩法如何变现",
    "published": "2026-06-01",
    "event_date": "2026-05-27",
    "url": "https://www.youxituoluo.com/534534.html",
    "type": "developer_talk_media_transcript",
    "coverage": "全文核读演讲转录；未取得实验原始数据或原演讲视频",
    "accessed": "2026-09-12",
    "independence": "与国内研究流同一场演讲，合并时去重",
    "limitations": "AI技术实现、评分系数和A/B样本未公开，不能独立复核因果或百分比"
  }
]