使用oneHot后,行业哑变量列名变成 industry_801780.SI样式的几十个
这时做ols回归该如何枚举这几十个列名?
用columnNames(table)也报错
hot=oneHot(table,`industry)
h=columnNames(hot)
offset0123456789
0 date stock gtjaAlpha1 mv industry_801780.SI industry_801180.SI industry_801150.SI industry_801160.SI industry_801200.SI industry_801890.SI