【新人赛】快来一起挖掘幸福感！

[{"title":"（ 8 个子文件 2.6MB ） 【新人赛】快来一起挖掘幸福感！","children":[{"title":"happiness","children":[{"title":"happiness_survey_cgss2015.pdf <span style='color:#111;'> 2.23MB </span>","children":null,"spread":false},{"title":"happiness_index.xlsx <span style='color:#111;'> 21.23KB </span>","children":null,"spread":false},{"title":"train","children":[{"title":"simpleDataForTest.csv <span style='color:#111;'> 93B </span>","children":null,"spread":false},{"title":"happiness_train_abbr.csv <span style='color:#111;'> 918.98KB </span>","children":null,"spread":false},{"title":"happiness_train_complete.csv <span style='color:#111;'> 2.58MB </span>","children":null,"spread":false}],"spread":true},{"title":"test","children":[{"title":"happiness_test_abbr.csv <span style='color:#111;'> 336.62KB </span>","children":null,"spread":false},{"title":"happiness_test_complete.csv <span style='color:#111;'> 975.68KB </span>","children":null,"spread":false}],"spread":true},{"title":"happiness_submit.csv <span style='color:#111;'> 24.15KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]