Model klasifikasi

Validasi Model di Python

Kasey Jones

Data Scientist

Respons kategorikal:
- Warna rambut bayi baru lahir
- Pemenang pertandingan bola basket
- Genre lagu berikutnya di radio

Dataset Tic-Tac-Toe

...	Bawah-Kiri	Bawah-Tengah	Bawah-Kanan	Kelas
...	X	O	O	positif
...	O	X	O	positif
...	O	O	X	positif
...	X	X	O	negatif
...	...	...	...	...

Google dapat bermain Tic-Tac-Toe dengan Anda. Kunjungi Google dan cari permainan Tic-Tac-Toe.

from sklearn.ensemble import RandomForestClassifier
rfc = RandomForestClassifier(random_state=1111)
rfc.fit(X_train, y_train)
rfc.predict(X_test)

array([1, 1, 1, 1, 0, 1, ...])

pd.Series(rfc.predict(X_test)).value_counts()

1    627
0    331

rfc.predict_proba(X_test)

array([[0. , 1. ],
       [0.1, 0.9],
       [0.1, 0.9],
       ...])

rfc = RandomForestClassifier(random_state=1111)
rfc.get_params()

{'bootstrap': True,
 'class_weight': None,
 'criterion': 'gini',
 ...}

rfc.fit(X_train, y_train)
rfc.score(X_test, y_test)

0.8989

Validasi Model di Python