<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[robertoXChen的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/robertoXChen</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; robertoXChen]]></copyright><item><title><![CDATA[ML-第三天]]></title><link>https://blog.youkuaiyun.com/robertoXChen/article/details/75068910</link><guid>https://blog.youkuaiyun.com/robertoXChen/article/details/75068910</guid><author>robertoXChen</author><pubDate>Thu, 13 Jul 2017 15:27:53 +0800</pubDate><description><![CDATA[Gradient Descent梯度下降（Gradient Descent）对整个ML都是很重要的。梯度下降的作用是得出是代价函数的值最小的参数 θj\ \theta_j.REVIEW –about cost function:The Cost function is like: 
J(θ0,θ1,θ2,...,θn)=12m∑i=1m(hθ(x(i)j)−y(i))2(1)
J(\theta_0,]]></description><category></category></item><item><title><![CDATA[暑假博客——ML第一天]]></title><link>https://blog.youkuaiyun.com/robertoXChen/article/details/74943078</link><guid>https://blog.youkuaiyun.com/robertoXChen/article/details/74943078</guid><author>robertoXChen</author><pubDate>Tue, 11 Jul 2017 11:45:14 +0800</pubDate><description><![CDATA[ML的入门总结]]></description><category></category></item><item><title><![CDATA[假期第一天：Python语法]]></title><link>https://blog.youkuaiyun.com/robertoXChen/article/details/74108953</link><guid>https://blog.youkuaiyun.com/robertoXChen/article/details/74108953</guid><author>robertoXChen</author><pubDate>Sun, 02 Jul 2017 13:10:57 +0800</pubDate><description><![CDATA[1Python的基本运行方式
2 Python的基本语法与C语言比较
代码块的不同
语句的结尾标志不同
Python的变量不声明类型
Python的几个变量类型
Python的基本的语句]]></description><category></category></item></channel></rss>