Table of Content
批量标签编码
from sklearn import preprocessing
le = preprocessing.LabelEncoder()
for i in range(0,X.shape[1]):
if X.dtypes[i]=='object':
X[X.columns[i]] = le.fit_transform(X[X.columns[i]])
https://stackoverflow.com/questions/24458645/label-encoding-across-multiple-columns-in-scikit-learn
