NameError Traceback(最后一次调用) C:\Users\VAISHN~1\AppData\Local\Temp/ipykernel_6520/2922578464.py 中 3'内核':['rbf']} 4个 ----> 5 optimal_params=GridSearchCV( 6 SVC(), 7 参数网格,
NameError:未定义名称“GridSearchCV”
这是我的代码:
param_grid={'C': [0.5,1,10,100],
'gamma': ['scale',1,0.1,0.001,0.0001],
'kernel': ['rbf']}
optimal_params=GridSearchCV(
SVC(),
param_grid,
cv=5,
scoring='accuracy',
verbose=0
)
optimal_params.fit(X_train_scaled,y_train)
print(optimal_params.best_params_)
发生这种情况可能有 3 个原因:
python -m pip install --upgrade pip
pip install -U scikit-learn
from sklearn.model_selection import GridSearchCV
更新
pip install --upgrade scikit-learn