<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[n889092的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/n889092</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; n889092]]></copyright><item><title><![CDATA[机器学习分类算法——集成学习]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/77655024</link><guid>https://blog.youkuaiyun.com/n889092/article/details/77655024</guid><author>n889092</author><pubDate>Mon, 28 Aug 2017 22:49:40 +0800</pubDate><description><![CDATA[对于分类中集成学习算法，在不同的算法书中，叫法比较丰富。比如在周志华的西瓜书中，称为集成学习/多分类器系统/基于委员会的学习；在李航的《统计学习方法》中，称提升方法；在《数据挖掘导论》中，又称为组合方法/分类器组合。
        无论怎么称呼，根据定义，这些名称表达的意思都是一样的，即：



通过聚集多个分类器的预测来提高分类准确率。

        说明：这里的“分类器”如]]></description><category></category></item><item><title><![CDATA[对离散型随机变量期望的理解]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/77485173</link><guid>https://blog.youkuaiyun.com/n889092/article/details/77485173</guid><author>n889092</author><pubDate>Tue, 22 Aug 2017 20:35:28 +0800</pubDate><description><![CDATA[在看《程序员的数学2——概率统计》关于离散型随机变量的大数定律解释时，有两个概念一定需要弄明白：

随机变量的期望随机变量结果的平均值
在《Probability and Statistics》这本国外的经典教材第四章第一小节中，强调了随机变量的期望只与随机变量的分布有关系：

             Note: The Expectation of X Depends Only on]]></description><category></category></item><item><title><![CDATA[sklearn学习：make_multilabel_classification——多标签数据集方法]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/77126754</link><guid>https://blog.youkuaiyun.com/n889092/article/details/77126754</guid><author>n889092</author><pubDate>Sat, 12 Aug 2017 18:31:09 +0800</pubDate><description><![CDATA[Generate a random multilabel classification problem.
For each sample, the generative process is:

pick the number of labels: n ~ Poisson(n_labels)：选取标签的数目
n times, choose a class c: c ~ Multinomia]]></description><category></category></item><item><title><![CDATA[栈队列练习——堆盘子SetOfStacks]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/48806239</link><guid>https://blog.youkuaiyun.com/n889092/article/details/48806239</guid><author>n889092</author><pubDate>Tue, 29 Sep 2015 14:17:05 +0800</pubDate><description><![CDATA[import java.util.ArrayList;public class SetOfStacksApp {public static void main(String[] args) {
    int capacity_per_substack = 5;  
    SetOfStacks set = new SetOfStacks(capacity_per_substack);]]></description><category></category></item><item><title><![CDATA[Scanner vs. StringTokenizer vs. String.Split]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/48749975</link><guid>https://blog.youkuaiyun.com/n889092/article/details/48749975</guid><author>n889092</author><pubDate>Sat, 26 Sep 2015 10:41:30 +0800</pubDate><description><![CDATA[从stack overflow上面看到java输入的对比答案，附链接：
http://stackoverflow.com/questions/691184/scanner-vs-stringtokenizer-vs-string-split




They're essentially horses for courses.

Scanner is designed for ca]]></description><category></category></item><item><title><![CDATA[centos7安装apache-ant-1.9.5-bin.tar.gz]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/46730207</link><guid>https://blog.youkuaiyun.com/n889092/article/details/46730207</guid><author>n889092</author><pubDate>Thu, 02 Jul 2015 19:17:04 +0800</pubDate><description><![CDATA[1.在jdk-8u45-linux-x64.tar.gz安装包的文件夹下面右键鼠标打开终端，然后将安装包解压到指定的文件夹，
   解压指令为：tar -zxvf apache-ant-1.9.5-bin.tar.gz -C /usr/local

   这里我把安装包解压在/usr/local下面。注意-C,后面要添加路径。


2.配置环境变量，指令为：vim /etc/profi]]></description><category></category></item><item><title><![CDATA[centos7安装jdk-8u45-linux-x64.tar.gz]]></title><link>https://blog.youkuaiyun.com/n889092/article/details/46730041</link><guid>https://blog.youkuaiyun.com/n889092/article/details/46730041</guid><author>n889092</author><pubDate>Thu, 02 Jul 2015 18:42:37 +0800</pubDate><description><![CDATA[1.在centos7系统下搜索并删除旧版本的JDK或者openjdk，搜索指令为：rpm -qa | grep java
   删除指令为：rpm -e --nodeps，如：rpm -e --nodeps java-1.7.0-openjdk-headless-1.7.0.71-2.5.3.1.el7_0.x86_64。


2.删除干净之后，在jdk-8u45-linux-x64.ta]]></description><category></category></item></channel></rss>