LinearSVC() differs from SVC(kernel='linear')

Question

When data is offset (not centered in zero), LinearSVC() and SVC(kernel=\'linear\') are giving awfully different results. (EDIT: the problem might b

Answer 1

Reading the documentation, they are using different underlying implementations. LinearSVC is using liblinear where SVC is using libsvm.

Looking closely at the coefficients and intercept, it seems LinearSVC applies regularization to the intercept where SVC does not.

By adding intercept_scaling, I was able to obtain the same results to both.

LinearSVC(loss='hinge', intercept_scaling=1000)