机器学习实战教程

https://cuijiahua.com/blog/ml/
机器学习实战教程（八）：支持向量机原理篇之手撕线性SVM
https://cuijiahua.com/blog/2017/11/ml_8_svm_1.html

机器学习实战教程（九）：支持向量机实战篇之再撕非线性SVM
https://cuijiahua.com/blog/2017/11/ml_9_svm_2.html

https://blog.youkuaiyun.com/sinat_40624829/article/details/100894160
机器学习(3)-核函数与再生核希尔伯特空间