不错的资源

1.约束优化方法

https://www.cnblogs.com/ooon/p/5721119.html

2.矩阵奇异值分解

https://blog.youkuaiyun.com/u011251945/article/details/81362642

3.线性代数的本质

https://mp.weixin.qq.com/s?__biz=MzI1MzY0MzE4Mg==&mid=2247485133&idx=1&sn=595b66b45036a4b1692575bcf42cd3df&chksm=e9d0160cdea79f1a14f8edce6b417c9e6a49967732b8c3664599c04f0793a642a841ab0c0932&mpshare=1&scene=1&srcid=&sharer_sharetime=1567220626379&sharer_shareid=2a05bbc97816d7800a34d5408050e109&key=f6d26f92f2a2f56d9590c6d826e4d1ce114c6e5487052fa156dde98e20add2946bc1fe6d16116a2d038df3a30b62fa25209c58ba1168e9c0d7901dab60efd225c0af901298f3b0cbabae0e6f811b6984&ascene=1&uin=MjA4ODI3NDMwNQ%3D%3D&devicetype=Windows+10&version=62060834&lang=zh_CN&pass_ticket=tycuQnEcbAOJXpSwUcQHFSURJK%2Fd1sV8OBlWhWeC9K9allQP7491y4l7N7HiCzSj

4.cs229

https://cloud.tencent.com/developer/news/373618

5.矩阵理论学习笔记

https://zhuanlan.zhihu.com/matrix-learning

6.矩阵求导数

https://zhuanlan.zhihu.com/p/24709748

7.cv

一个比赛加代码

https://dianshi.baidu.com/competition/30/rule

https://github.com/zhuqunxi/Urban-Region-Function-Classification

8.svm白板推导

https://www.bilibili.com/video/av28186618

https://blog.youkuaiyun.com/xiaomlu/article/details/84551584(白板推导视频整理回顾)

9.xgb推导

https://mp.weixin.qq.com/s?__biz=MzIyNjM2MzQyNg==&mid=2247486101&idx=1&sn=53d7d6b37f2c90a288d6b365af33761e&chksm=e870dbd8df0752ce7fe83cef50f7541bda1ae888e2256776654f36c81dd1524316cb62d81dc0&mpshare=1&scene=1&srcid=&sharer_sharetime=1569382077945&sharer_shareid=e1d219969f8655255958b12904c16adb&key=443d50b7f259efeee8b10cac7ff29332113ec4cb231fd7bf02c7e48a48aaa555cebc29f4cb6f39f90ee5e754ab2434c69724248b49bb9c6362c097874e4cf22b6eeaadc810924c2e6ad2a54de5c77546&ascene=1&uin=MjA4ODI3NDMwNQ%3D%3D&devicetype=Windows+10&version=62060834&lang=zh_CN&pass_ticket=D9Yv1LqXl%2FvEdS5yi4q5A9t385vIHcv9NaMjBaZbHe%2Ba40h%2BKCzy4LmxH66UZDIu

10.xgb常问面试题

https://mp.weixin.qq.com/s?__biz=Mzg2MjI5Mzk0MA==&mid=2247484181&idx=1&sn=8d0e51fb0cb974f042e66659e1daf447&chksm=ce0b59cef97cd0d8cf7f9ae1e91e41017ff6d4c4b43a4c19b476c0b6d37f15769f954c2965ef&scene=21#wechat_redirect

https://mp.weixin.qq.com/s?__biz=Mzg2MjI5Mzk0MA==&mid=2247484193&idx=1&sn=81ff5a898e2f22357aab9e3742f1cc22&chksm=ce0b59faf97cd0ec095ec8b1e0d7521fb3ec6dea829dbd8a3960ed7ed5c3c0fe7d9e34649074&scene=21#wechat_redirect

10.树面试题

https://mp.weixin.qq.com/s?__biz=Mzg2MjI5Mzk0MA==&mid=2247484061&idx=6&sn=0e84aa41c6017a3f5630e026019b5b21&chksm=ce0b5846f97cd150a058bbd1e0a96c4b0480582ebee9ce42c361f3319af74f25111e5efd2a80&scene=21#wechat_redirect

11.一些白板推导

https://space.bilibili.com/97068901/video?tid=0&page=2&keyword=&order=pubdate