如何使用列转换器对多个列进行编码？

Question

我想用columtransformer编码多个列。你知道怎么添加吗？

from sklearn.preprocessing import LabelEncoder
from sklearn.compose import make_column_transformer
transformer = make_column_transformer(( OneHotEncoder(categories='auto'), [1] ),remainder="passthrough")
X = transformer.fit_transform(X)

LabelEncoder_Y = LabelEncoder()
y = LabelEncoder_Y.fit_transform(y)

Answer 1

对于make_column_transformer，您需要编码和转换的列的索引/列名称的list。例如，如果您需要列索引0和1：

transformer = make_column_transformer( (OneHotEncoder(categories='auto'), 
                                       [0, 1]), remainder="passthrough" )