<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Nina_ningning的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Nina_ningning</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Nina_ningning]]></copyright><item><title><![CDATA[外接硬盘在mac上不能在mac上新建文件夹]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/131537784</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/131537784</guid><author>Nina_ningning</author><pubDate>Tue, 04 Jul 2023 16:27:12 +0800</pubDate><description><![CDATA[首先一般这是因为外接硬盘和mac的系统不兼容，需要下载一些ntfs软件来辅助，无论是哪一种软件，大概率在mac上都会因为隐私问题被禁止，所以要按照下面的步骤进行操作。最后开机以后一定要记得去隐私那一栏看一下已经被阻止的软件，选择允许，这样才算完成。]]></description><category></category></item><item><title><![CDATA[线性回归中自变量出现共线性应该怎么办？]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/129475064</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/129475064</guid><author>Nina_ningning</author><pubDate>Tue, 14 Mar 2023 18:41:03 +0800</pubDate><description><![CDATA[在使用线性回归的时候，自变量和因变量的关系都是非常确定的，不存在遗漏变量等问题，但是这时候估计出来的参数和真值差距非常大，这时候要检查一下自变量之间是否存在共线性。最简单的办法就是计算一下自变量之间的correlation，如果correlation过大，那么应该是共线性的问题。接下来我们重点讲一下partial least square + pca的思想是怎样的。1. 如果某两个自变量之间的correlation都接近1了，那么最好是删除其中一个。那么如何解决共线性的问题呢？下面有几个解决方案。]]></description><category></category></item><item><title><![CDATA[中心矩和非中心矩的关系如何推导]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/128539552</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/128539552</guid><author>Nina_ningning</author><pubDate>Tue, 03 Jan 2023 21:19:12 +0800</pubDate><description><![CDATA[中心矩和非中心矩的关系如何推导]]></description><category></category></item><item><title><![CDATA[latex hyperref 错误“undefined control sequence”]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/128354562</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/128354562</guid><author>Nina_ningning</author><pubDate>Sat, 17 Dec 2022 16:25:34 +0800</pubDate><description><![CDATA[latex hyperref 错误“undefined control sequence”]]></description><category></category></item><item><title><![CDATA[mac怎么切换输入法（在外接键盘下）]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/128313324</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/128313324</guid><author>Nina_ningning</author><pubDate>Wed, 14 Dec 2022 11:07:40 +0800</pubDate><description><![CDATA[mac怎么切换输入法（在外接键盘下）]]></description><category></category></item><item><title><![CDATA[如何解决macbook开机的时候自启动很多程序的问题]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/128208804</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/128208804</guid><author>Nina_ningning</author><pubDate>Tue, 06 Dec 2022 19:30:22 +0800</pubDate><description><![CDATA[如何解决macbook开机的时候自启动很多程序的问题]]></description><category></category></item><item><title><![CDATA[经济类英文期刊排行榜]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127854807</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127854807</guid><author>Nina_ningning</author><pubDate>Mon, 14 Nov 2022 20:28:20 +0800</pubDate><description><![CDATA[经济类英文期刊排行榜]]></description><category></category></item><item><title><![CDATA[什么是计量经济学？]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127820518</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127820518</guid><author>Nina_ningning</author><pubDate>Sat, 12 Nov 2022 15:35:27 +0800</pubDate><description><![CDATA[什么是计量经济学？]]></description><category></category></item><item><title><![CDATA[mac如何添加学校买的outlook邮箱]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127785184</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127785184</guid><author>Nina_ningning</author><pubDate>Thu, 10 Nov 2022 11:10:39 +0800</pubDate><description><![CDATA[mac如何添加学校买的outlook邮箱]]></description><category></category></item><item><title><![CDATA[姚洋教授的学术讲座“如何做好经济学研究”]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127739930</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127739930</guid><author>Nina_ningning</author><pubDate>Mon, 07 Nov 2022 22:33:10 +0800</pubDate><description><![CDATA[姚洋教授的学术讲座“如何做好经济学研究”]]></description><category></category></item><item><title><![CDATA[Latex使用BIBTEX自动添加参考文献]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127669582</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127669582</guid><author>Nina_ningning</author><pubDate>Thu, 03 Nov 2022 14:30:02 +0800</pubDate><description><![CDATA[Latex使用BIBTEX自动添加参考文献]]></description><category></category></item><item><title><![CDATA[Latex添加带链接的目录]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127655627</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127655627</guid><author>Nina_ningning</author><pubDate>Wed, 02 Nov 2022 20:00:38 +0800</pubDate><description><![CDATA[LATEX添加带链接的目录]]></description><category></category></item><item><title><![CDATA[Latex中文模板]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127652445</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127652445</guid><author>Nina_ningning</author><pubDate>Wed, 02 Nov 2022 15:29:05 +0800</pubDate><description><![CDATA[Latex中文模板]]></description><category></category></item><item><title><![CDATA[如何定时定点有周期性的自动运行python程序？]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127528434</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127528434</guid><author>Nina_ningning</author><pubDate>Wed, 26 Oct 2022 11:12:06 +0800</pubDate><description><![CDATA[如何定时定点有周期性的自动运行pythonch程序？]]></description><category></category></item><item><title><![CDATA[小白都能看懂的python爬虫]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127521470</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127521470</guid><author>Nina_ningning</author><pubDate>Tue, 25 Oct 2022 20:47:36 +0800</pubDate><description><![CDATA[小白都能看懂的python编程]]></description><category></category></item><item><title><![CDATA[如何理解特征函数characteristic function]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127409809</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127409809</guid><author>Nina_ningning</author><pubDate>Wed, 19 Oct 2022 15:56:46 +0800</pubDate><description><![CDATA[特征函数]]></description><category></category></item><item><title><![CDATA[什么是帕德近似pade approximants]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127402491</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127402491</guid><author>Nina_ningning</author><pubDate>Wed, 19 Oct 2022 10:51:01 +0800</pubDate><description><![CDATA[帕徳近似]]></description><category></category></item><item><title><![CDATA[彻底弄懂泰勒近似，泰勒展开由来]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127401175</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127401175</guid><author>Nina_ningning</author><pubDate>Wed, 19 Oct 2022 09:27:22 +0800</pubDate><description><![CDATA[泰勒展开，泰勒近似，泰勒级数]]></description><category></category></item><item><title><![CDATA[梯度下降gradient descent]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127352363</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127352363</guid><author>Nina_ningning</author><pubDate>Sun, 16 Oct 2022 20:44:21 +0800</pubDate><description><![CDATA[梯度下降]]></description><category></category></item><item><title><![CDATA[机器学习的基本框架]]></title><link>https://blog.youkuaiyun.com/Nina_ningning/article/details/127348267</link><guid>https://blog.youkuaiyun.com/Nina_ningning/article/details/127348267</guid><author>Nina_ningning</author><pubDate>Sun, 16 Oct 2022 15:29:16 +0800</pubDate><description><![CDATA[机器学习的基本框架]]></description><category></category></item></channel></rss>