当C值较大时,[`LinearSVC`](https://scikit-learn.org/stable/modules/generated/sklearn.svm.LinearSVC.html#sklearn.svm.LinearSVC)和[`LinearSVR`](https://scikit-learn.org/stable/modules/generated/sklearn.svm.LinearSVR.html#sklearn.svm.LinearSVR)对C值较不敏感,即当C值大于特定阈值后,模型效果将会停止提升。同时,较大的C值将会导致较长的训练时间,Fan et al.(2008)的论文显示,训练时间的差距有时会达到10倍。
>* Fan, Rong-En, et al., “[LIBLINEAR: A library for large linear classification.](https://www.csie.ntu.edu.tw/~cjlin/papers/liblinear.pdf)”, Journal of machine learning research 9.Aug (2008): 1871-1874.