pandas.get_dummies.ont-hot-incoding

# target을 one-hot-incoding한다
import numpy as np
import pandas as pd
from sklearn.datasets import load_iris

iris=load_iris()

data=np.c_[iris.data,pd.get_dummies(iris.target).values]
data

 

array([[5.1, 3.5, 1.4, ..., 1. , 0. , 0. ],
       [4.9, 3. , 1.4, ..., 1. , 0. , 0. ],
       [4.7, 3.2, 1.3, ..., 1. , 0. , 0. ],
       ...,
       [6.5, 3. , 5.2, ..., 0. , 0. , 1. ],
       [6.2, 3.4, 5.4, ..., 0. , 0. , 1. ],
       [5.9, 3. , 5.1, ..., 0. , 0. , 1. ]])