Voting classifier grid search

from sklearn.linear_model import LogisticRegression
from sklearn.svm import SVC
from sklearn.ensemble import VotingClassifier
from sklearn.model_selection import GridSearchCV

X = np.array([[-1.0, -1.0], [-1.2, -1.4], [-3.4, -2.2], [1.1, 1.2],[-1.0, -1.0], [-1.2, -1.4], [-3.4, -2.2], [1.1, 1.2]])
y = np.array([1, 1, 2, 2,1, 1, 2, 2])

eclf = VotingClassifier(estimators=[ 
    ('svm', SVC(probability=True)),
    ('lr', LogisticRegression()),
    ], voting='soft')

#Use the key for the classifier followed by __ and the attribute
params = {'lr__C': [1.0, 100.0],
      'svm__C': [2,3,4],}

grid = GridSearchCV(estimator=eclf, param_grid=params, cv=2)

grid.fit(X,y)

print (grid.best_params_)
#{'lr__C': 1.0, 'svm__C': 2}

Source: stackoverflow.com

Similar codes

6 votes312 views2 answers
Python code for where to save the figures
Python
0 vote387 views2 answers
How to download a .xlsx file from google colab
Python
5 votes296 views6 answers
How to check a string in if statement python
Python
0 vote332 views1 answer
Resize multiple images to same size python
Python
1 vote310 views1 answer
Stdout.write python
Python
1 vote290 views2 answers
Python list iterator
Python
0 vote321 views1 answer
Create array with unknown size in python
Python
1 vote317 views1 answer
How to use h5 file in python
Python
0 vote303 views1 answer
Turn columns into one column as list python
Python
7 votes298 views6 answers
Install python 3 on mac
Python