+   [作者](docs/3.md)
+   [引言](docs/5.md)
+   [核心概念](docs/6.md)
    +   [交叉验证](docs/7.md)
    +   [线性回归](docs/8.md)
    +   [过拟合和欠拟合](docs/9.md)
    +   [正则化](docs/10.md)
+   [监督学习](docs/11.md)
    +   [逻辑回归](docs/12.md)
    +   [朴素贝叶斯分类](docs/13.md)
    +   [决策树](docs/14.md)
    +   [k 最近邻](docs/15.md)
    +   [线性支持向量机](docs/16.md)
+   [无监督学习](docs/17.md)
    +   [聚类](docs/18.md)
    +   [主成分分析](docs/19.md)
+   [深度学习](docs/20.md)
    +   [多层感知机](docs/21.md)
    +   [卷积神经网络](docs/22.md)
    +   [自编码器](docs/23.md)
+   [原文的协议](docs/25.md)