테이블 간에 중복된 데이터를 허용 하지 않는다는 것
from sklearn.preprocessing import MinMaxScaler
scaler = MinMaxScaler()
X_scaled = scaler.fit_transform(X)
X = X_scaled
X
from sklearn.preprocessing import StandardScaler
scaler = StandardScaler()
X_scaled = scaler.fit_transform(X)
X = X_scaled
X