machine-learning - Scikit 学习支持向量机的多类分类

Question

我想知道LinearSVC默认情况下是否支持多类分类，或者我们是否必须将其包装在OneVsRestClassifier中，例如:

 OneVsRestClassifier(LinearSVC())

Answer 1

根据this part of the documentation :

SVC, NuSVC and LinearSVC are classes capable of performing multi-class classification on a dataset.

[...]

On the other hand, LinearSVC implements “one-vs-the-rest” multi-class strategy, thus training n_class models. If there are only two classes, only one model is trained:

所以它默认支持多类分类。