<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[cooledi的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/cooledi</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; cooledi]]></copyright><item><title><![CDATA[Python sklearn数据分析中常用方法]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/79364200</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/79364200</guid><author>cooledi</author><pubDate>Sat, 24 Feb 2018 17:49:57 +0800</pubDate><description><![CDATA[一、数据处理随机划分训练集和测试集：1使用train_test_splitfrom sklearn.model_selection import train_test_split

X_all = data_train.drop(['Survived', 'PassengerId'], axis=1) #只包含特征集，不包含预测目标
y_all = data_train['Survived'] #...]]></description><category></category></item><item><title><![CDATA[Logistic回归]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/79146808</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/79146808</guid><author>cooledi</author><pubDate>Wed, 24 Jan 2018 09:26:19 +0800</pubDate><description><![CDATA[Logistic回归（Logistic Regression，以下简称LR）属于常用的机器学习算法之一，可以用来回归，也可以用来分类，主要用来处理二分类的问题。与传统的二分类方法（例如SVM）不同的是，LR并不是将两个不同类别的样本完全分开，非此即彼，而是返回一个概率值，即预测样本有百分之多少的概率属于正类，又有百分之多少的概率属于负类，这接近于“模糊”（fuzzy）分类的范畴。在实际应用中，LR]]></description><category></category></item><item><title><![CDATA[（-1）*（-1）为什么等于1]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/79028612</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/79028612</guid><author>cooledi</author><pubDate>Wed, 10 Jan 2018 21:38:49 +0800</pubDate><description><![CDATA[（-1）*（-1）为什么等于1]]></description><category></category></item><item><title><![CDATA[统计学学习笔记（-）3]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/79022523</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/79022523</guid><author>cooledi</author><pubDate>Wed, 10 Jan 2018 13:18:38 +0800</pubDate><description><![CDATA[1 统计学  统计学可以分为：描述统计学与推断统计学   1）描述统计学：使用特定的数字或图表来体现数据的集中程度和离散程度。  2）推断统计学：根据样本数据推断总体数据特征。 例如：产品质量检查，抽检2 集中趋势  通过均值 中位数 众数来考量数据的集中程度。  2.1 均值 :  算数平均数，描述平均水平  2.2 中位数 :将数据按大小排列后位于正中间的数，描述中等水平中位数就是将数据按照大...]]></description><category></category></item><item><title><![CDATA[maven用eclipse创建多模块项目]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78949540</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78949540</guid><author>cooledi</author><pubDate>Tue, 02 Jan 2018 10:40:45 +0800</pubDate><description><![CDATA[1.创建一个普通maven项目，作为所有模块项目的根：


把这个项目叫做maven_parent。



2.设置该根项目的pom：



“Modules”下面提示说“Only
 projects with ‘pom’ packaging can declare modules”，所以要将Packagin]]></description><category></category></item><item><title><![CDATA[GIT-Please enter a commit message to explain why this merge is necessary]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78789676</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78789676</guid><author>cooledi</author><pubDate>Wed, 13 Dec 2017 11:11:51 +0800</pubDate><description><![CDATA[来自：http://blog.youkuaiyun.com/ruingman/article/details/52849621Please enter a commit message to explain why this merge is necessary.请输入提交消息来解释为什么这种合并是必要的git 在pull或者合并分支的时候有时会遇到这个界面。可以不管(直接下面3,4步)，如果要输入解释的话就...]]></description><category></category></item><item><title><![CDATA[python学习记录-元组（tuple)]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78641955</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78641955</guid><author>cooledi</author><pubDate>Mon, 27 Nov 2017 18:41:37 +0800</pubDate><description><![CDATA[1 元组的定义 （元组一旦定义不能修改）


tup1 = ('physics', 'chemistry', 1997, 2000);
tup2 = (1, 2, 3, 4, 5 );
tup3 = "a", "b", "c", "d";
2 元组中只包含一个元素时，需要在元素后面添加逗号来消除歧义



tup1 = (50,);



3 tuple的陷阱：当你定义一个]]></description><category></category></item><item><title><![CDATA[根据python的不同职业方向确定学习内容]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78640346</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78640346</guid><author>cooledi</author><pubDate>Sun, 26 Nov 2017 21:56:34 +0800</pubDate><description><![CDATA[后端开发：熟悉MVC架构，精通Tornado、Django、Flask等架构。
科学计算：精通Pandas、Numpy、Matplotlib等，熟悉数据结构与算法。
网络爬虫：精通Scrapy，了解多线程、多进程、网络通信编程相关知识。
机器学习：了解scikit-learn等，熟练掌握python数据分析、挖掘和建模。]]></description><category></category></item><item><title><![CDATA[如何改变swagger请求的url]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78599384</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78599384</guid><author>cooledi</author><pubDate>Wed, 22 Nov 2017 09:47:39 +0800</pubDate><description><![CDATA[.host()方法设置


转载：https://segmentfault.com/q/1010000007199621]]></description><category></category></item><item><title><![CDATA[JAVA 通过命令行设置属性值]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78219424</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78219424</guid><author>cooledi</author><pubDate>Thu, 12 Oct 2017 20:34:00 +0800</pubDate><description><![CDATA[通过命令行设置属性值

相信使用过一段时间Spring Boot的用户，一定知道这条命令：java
 -jar xxx.jar --server.port=8888，通过使用--server.port属性来设置xxx.jar应用的端口为8888。

在命令行运行时，连续的两个减号--就是对application.properties中的属性值进行赋值的标识。所以，java
 -jar ]]></description><category></category></item><item><title><![CDATA[常用SpringJPA主键生成策略，UUID和自增]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/78182135</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/78182135</guid><author>cooledi</author><pubDate>Mon, 09 Oct 2017 14:21:26 +0800</pubDate><description><![CDATA[这里数据库使用Oracle，常用的就是UUID和整形自增。

UUID能达到全局唯一，而且不受数据库限制，比如Oracle的自增就要用序列来做。但是存储控件需求会更多，另外性能上不及整形。

整形自增MySQL中只要设置一个整形列即可，Oracle中需要建立一个SEQUENCE。

关于Oracle序列使用：http://www.codelog.cn/thread-206-1-1.ht]]></description><category></category></item><item><title><![CDATA[spring data jpa 实体类中字段不与数据库表映射]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/77817233</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/77817233</guid><author>cooledi</author><pubDate>Sun, 03 Sep 2017 12:54:13 +0800</pubDate><description><![CDATA[当我们使用spring data jpa开发的时候，会将实体类中的成员变量与表中的字段一一对应，当我们在实体类中加上一个不与数据库表一一对应的成员变量的时候，此时我们只要在这个成员变量上加上注解@Transient


@Transient  
private String[] typeNames;]]></description><category></category></item><item><title><![CDATA[es6 export]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/77249324</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/77249324</guid><author>cooledi</author><pubDate>Wed, 16 Aug 2017 16:13:56 +0800</pubDate><description><![CDATA[es6 export function
function send() {
    console.log("=================================")
}

export {send}

m1.js
===================
import {send} from "./m1";
send();]]></description><category></category></item><item><title><![CDATA[react html 控件 事件]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/77131749</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/77131749</guid><author>cooledi</author><pubDate>Sat, 12 Aug 2017 22:48:39 +0800</pubDate><description><![CDATA[1、select (onChange) 
          Volvo
          Saab
          Opel
          Audi
 
handChange (val) {
    console.log('selected', val.target.value);
     this.setState({name: val.target.value});
}]]></description><category></category></item><item><title><![CDATA[PYTHON-学习笔记：元组]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/75907027</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/75907027</guid><author>cooledi</author><pubDate>Sun, 23 Jul 2017 13:19:56 +0800</pubDate><description><![CDATA[Python的元组与列表类似，不同之处在于元组的元素不能修改。
元组使用小括号，列表使用方括号。元组创建很简单，只需要在括号中添加元素，并使用逗号隔开即可。
tup1 = ('physics', 'chemistry', 1997, 2000);
tup2 = (1, 2, 3, 4, 5 );
tup3 = "a", "b", "c", "d";


创建空元组

tup1 = (]]></description><category></category></item><item><title><![CDATA[Java 之 FileReader FileInputStream InputStreamReader BufferedReader 作用与区别]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/74382469</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/74382469</guid><author>cooledi</author><pubDate>Wed, 05 Jul 2017 10:17:50 +0800</pubDate><description><![CDATA[Java
 之 FileReader FileInputStream InputStreamReader BufferedReader 作用与区别


ava.io下面有两个抽象类：InputStream和Reader
InputStream是表示字节输入流的所有类的超类
Reader是用于读取字符流的抽象类
InputStream提供的是字节流的读取，而非文本读取，这是和Reade]]></description><category></category></item><item><title><![CDATA[java Double类型的数字相加]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/72911296</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/72911296</guid><author>cooledi</author><pubDate>Thu, 08 Jun 2017 11:01:43 +0800</pubDate><description><![CDATA[double d1=1.2;
double d2=2.2;




String.format("%.2f", d1+d2)]]></description><category></category></item><item><title><![CDATA[js控制浏览器后退按钮]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/72861140</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/72861140</guid><author>cooledi</author><pubDate>Sun, 04 Jun 2017 20:27:00 +0800</pubDate><description><![CDATA[var guanzhu ='http://www.xxx.com';
        window.onhashchange = function () {
            location.href = guanzhu+"?s=mRygKs" + (parseInt((parseInt(new Date().getTime() / (100 * 5 * 1)) + '').substri]]></description><category></category></item><item><title><![CDATA[c# 正则表达式]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/71263802</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/71263802</guid><author>cooledi</author><pubDate>Sat, 06 May 2017 14:47:33 +0800</pubDate><description><![CDATA[var dealerID=“avc123”;
 Regex reg = new Regex(@"^[a-zA-Z0-9]{10,20}$", RegexOptions.IgnoreCase | RegexOptions.Compiled);
                return reg.IsMatch(dealerID);]]></description><category></category></item><item><title><![CDATA[powerDesign 把name自动添加到Commment里]]></title><link>https://blog.youkuaiyun.com/cooledi/article/details/71254413</link><guid>https://blog.youkuaiyun.com/cooledi/article/details/71254413</guid><author>cooledi</author><pubDate>Sat, 06 May 2017 13:33:04 +0800</pubDate><description><![CDATA['把pd中那么name想自动添加到comment里面
'如果comment为空,则填入name;如果不为空,则保留不变,这样可以避免已有的注释丢失.
Option   Explicit 
ValidationMode   =   True 
InteractiveMode   =   im_Batch 


Dim   mdl   '   the   current   model ]]></description><category></category></item></channel></rss>