How plot GridSearch results?

Question

I trained an SVM model with GridSearch

svc = SVC()
parameters = {
  'kernel': ['linear', 'rbf'],
  'C': [0.1, 1, 10]
}

cv = GridSearchCV(svc, parameters, cv=5)
cv.fit(v_train, y_train)

print_results(cv)

Here is the result I got:

BEST PARAMS: {'C': 1, 'kernel': 'linear'}

0.912 (+/-0.037) for {'C': 0.1, 'kernel': 'linear'}
0.763 (+/-0.027) for {'C': 0.1, 'kernel': 'rbf'}
0.942 (+/-0.045) for {'C': 1, 'kernel': 'linear'}
0.903 (+/-0.044) for {'C': 1, 'kernel': 'rbf'}
0.94 (+/-0.043) for {'C': 10, 'kernel': 'linear'}
0.928 (+/-0.046) for {'C': 10, 'kernel': 'rbf'}

What is the best way to plot this result? in one plot that both contain the C parameter and kernel with their corresponding accuracy.

Thank you.

Answer 1

What I would suggest is to have put the results as a Data frame with

pd.DataFrame(cv.cv_results_)

And then you have the data in a dataframe which is easier to handle.

For the other question (in your comments), once you have the data in a nice dataframe is just about data visualization. How can you put it in a nice visualization?

The easier are either 2d plots or 3d or even contour plots. By googling them and python you will get nice tutorials on how to do it

Answer 2

You can use a simple lineplot.