属性错误： 'SVC'对象没有属性'best_estimator_'

Question

我试图将GridSearchCV用于SVM线性，但我得到了这个错误：

AttributeError: 'SVC' object has no attribute 'best_estimator_'

SVM线性的代码：

classifier = SVC()
classifier = GridSearchCV(classifier, {'C':[0.001, 0.01, 0.1, 1, 10,0.1, 100, 1000]}, cv=3, n_jobs=4)
classifier = SVC(kernel='linear')
classifier.fit(train_vectors, train_labels)
classifier = classifier.best_estimator_

有人能帮忙吗？

Answer 1

这样做：

classifier = SVC(kernel='linear')
gridsearch = GridSearchCV(classifier, {'C':[0.001, 0.01, 0.1, 1, 10,0.1, 100, 1000]}, cv=3, n_jobs=4)
gridsearch.fit(train_vectors, train_labels)
best_params = gridsearch.best_params_
classifier = gridsearch.best_estimator_