[{"title":"( 3 个子文件 50.65MB ) 书籍推荐数据, 用以向用户推荐偏好的书籍","children":[{"title":"Book Crossing Dataset","children":[{"title":"Site.txt <span style='color:#111;'> 52B </span>","children":null,"spread":false},{"title":"BX-SQL-Dump.zip <span style='color:#111;'> 25.77MB </span>","children":null,"spread":false},{"title":"BX-CSV-Dump.zip <span style='color:#111;'> 24.88MB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]