# 知识点

* [返回顶层目录](https://luweikxy.gitbook.io/machine-learning-notes/summary)
* [损失函数](https://luweikxy.gitbook.io/machine-learning-notes/tips/loss-function)
* [负采样](https://luweikxy.gitbook.io/machine-learning-notes/tips/negtive-sampling)