Content moderation from Twitter to X: policies, enforcement and community notes

This dataset contains: (1) Twitter/X policies from 2006 to late 2024 in markdown format; (2) calculations of policy changes over time; (3) Dutch-speaking community notes and corresponding posts, categorised by topic and user types; and (4) temporal search ranking of thousands of posts about immigration, dating from September to October 2023.本数据集包含如下内容：(1) 2006年至2024年末的Twitter/X平台政策文档，格式为Markdown；(2) 随时间推移的政策变化量化分析结果；(3) 按主题与用户类型分类的荷兰语社区笔记及对应帖子；(4) 2023年9月至10月期间数千条关于移民议题的帖子的时序搜索排名数据。