<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[balllee的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/balllee</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; balllee]]></copyright><item><title><![CDATA[Matlab数组、矩阵技巧]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/42082077</link><guid>https://blog.youkuaiyun.com/balllee/article/details/42082077</guid><author>balllee</author><pubDate>Mon, 22 Dec 2014 17:09:39 +0800</pubDate><description><![CDATA[1.数组切割：
A(,)
ans(1,1:935) //第一行，1到935列
ans(:,end) //所有行，最后列

ans(:,select) //所有行，select所选的列

2.数组排序：
[sa,aindex]=sort(a,'descend') //跟随index排序
3.数组合并：
train=[n2 n3 n4 n5]
train=[n2; n3; n4; n1]]]></description><category></category></item><item><title><![CDATA[How to show hidden files in ubuntu(linux) :)]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/39737539</link><guid>https://blog.youkuaiyun.com/balllee/article/details/39737539</guid><author>balllee</author><pubDate>Thu, 02 Oct 2014 18:04:00 +0800</pubDate><description><![CDATA[commanding window: ls -a


gui:]]></description><category></category></item><item><title><![CDATA[A simple to "path" ElasticNet parameters ( in python)]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/39274189</link><guid>https://blog.youkuaiyun.com/balllee/article/details/39274189</guid><author>balllee</author><pubDate>Sun, 14 Sep 2014 21:50:45 +0800</pubDate><description><![CDATA[import numpy as np
import sys
import math

trfile=sys.argv[1]
tlabel=sys.argv[2]
parafile=sys.argv[3]


from sklearn.linear_model import ElasticNetCV

A=np.genfromtxt(trfile);
label=np.loadtxt(tlabel,]]></description><category></category></item><item><title><![CDATA[A sampling method for you all:RWO SAMPLING]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/39274089</link><guid>https://blog.youkuaiyun.com/balllee/article/details/39274089</guid><author>balllee</author><pubDate>Sun, 14 Sep 2014 21:43:57 +0800</pubDate><description><![CDATA[public static double[][] generatesample(double[] vector,int k){
	double ave=0.0;
	
	for (int i = 0; i < vector.length; i++) {
		ave+=vector[i];
	}
	ave=ave/vector.length;
	double fang=0;
	for (int i =]]></description><category></category></item><item><title><![CDATA[去你妹的渣渣IE浏览器！！！你丫有病啊！！居然不支持JAVASCRIPT的TRIM()！！！！]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/28271429</link><guid>https://blog.youkuaiyun.com/balllee/article/details/28271429</guid><author>balllee</author><pubDate>Tue, 03 Jun 2014 17:01:45 +0800</pubDate><description><![CDATA[注释掉就好了，好伤心啊~！！一]]></description><category></category></item><item><title><![CDATA[solve problem like lib/ld-linux.so.2: bad ELF interprete]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/27696113</link><guid>https://blog.youkuaiyun.com/balllee/article/details/27696113</guid><author>balllee</author><pubDate>Fri, 30 May 2014 17:11:17 +0800</pubDate><description><![CDATA[sh: /home/djyu/apache-tomcat-6.0.24/webapps/TargetDisulfide3/blast-2.2.26/blastpgp: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory




是因为64位系统中安装了32位程序
解决方法：
yum install gl]]></description><category></category></item><item><title><![CDATA[install gcc-4.1.2 on ubuntu 12.04 (from someone else but add something)]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/25006507</link><guid>https://blog.youkuaiyun.com/balllee/article/details/25006507</guid><author>balllee</author><pubDate>Sun, 04 May 2014 22:33:36 +0800</pubDate><description><![CDATA[$ wget http://ftp.gnu.org/gnu/gcc/gcc-4.1.2/gcc-4.1.2.tar.bz2
$ tar xvjf gcc-4.1.2.tar.bz2



2. 安装依赖库, 以及软件
$ sudo apt-get install libc6-dev libgmp-dev libmpfr-dev texinfo


3. 为头文件以及所需库添加链接
]]></description><category></category></item><item><title><![CDATA[关于shell调用matlab的一些注意事项么么哒]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/25005727</link><guid>https://blog.youkuaiyun.com/balllee/article/details/25005727</guid><author>balllee</author><pubDate>Sun, 04 May 2014 22:21:33 +0800</pubDate><description><![CDATA[matlab -nodesktop -nosplash - nojvm -r "[command];"




% command可以是script 但不需要添加后缀名.m]]></description><category></category></item><item><title><![CDATA[在shell中调用matlab执行]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/24914383</link><guid>https://blog.youkuaiyun.com/balllee/article/details/24914383</guid><author>balllee</author><pubDate>Sat, 03 May 2014 13:27:54 +0800</pubDate><description><![CDATA[1.



如何在shell脚本中调用Matlab
script language就像灵活的瑞士军刀，但进行某些专业处理会力不从心。譬如复杂的数学运算、建模、复杂的文本处理会等等。没关系，专业的人做专业的事，同样，专业的工具干专业的活，我们可以借助外部工具帮忙，譬如matlab、C／C＋＋，vim等等，下面以Matlab为例，简单描述一下如何用shell脚本产生m程序，并用matlab工]]></description><category></category></item><item><title><![CDATA[ubuntu 1204 mex使用不能的解决办法]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/24914245</link><guid>https://blog.youkuaiyun.com/balllee/article/details/24914245</guid><author>balllee</author><pubDate>Sat, 03 May 2014 13:24:49 +0800</pubDate><description><![CDATA[1. 安装gcc g++

参考：http://stefaanlippens.net/cpp_mex_ubuntu804

zhang@ubuntu-desktop:~$ sudo apt-get install gcc-4.3 g++-4.3

2.  At the MATLAB Command Window prompt, type: 

>> mex -setup]]></description><category></category></item><item><title><![CDATA[SWISS-PROT Format说明]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/23335789</link><guid>https://blog.youkuaiyun.com/balllee/article/details/23335789</guid><author>balllee</author><pubDate>Thu, 10 Apr 2014 10:10:34 +0800</pubDate><description><![CDATA[SWISS-PROT Format


SWISS-PROT is a curated protein sequence database which strives to provide a high level of annotations (such as the description of the function of a protein, its domain structur]]></description><category></category></item><item><title><![CDATA[java调用weka里面的分类器做回归]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/19851753</link><guid>https://blog.youkuaiyun.com/balllee/article/details/19851753</guid><author>balllee</author><pubDate>Mon, 24 Feb 2014 22:50:44 +0800</pubDate><description><![CDATA[这里是M5P分类器，源文档有很大帮助package rf;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.PrintStream;

import weka.classifiers.rules.M5Rules;
import weka.classifiers.trees.DecisionStump;]]></description><category></category></item><item><title><![CDATA[随机森林调用matlab代码做回归]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/19851235</link><guid>https://blog.youkuaiyun.com/balllee/article/details/19851235</guid><author>balllee</author><pubDate>Mon, 24 Feb 2014 22:41:24 +0800</pubDate><description><![CDATA[function  Randomfre(set,numtrees )
%利用随机森林进行训练跟预测
%   by YangL
s=['rf/train_',num2str(set),'.rf'];
trainall=load(s);
[N D] =size(trainall);
train=zeros(N,D);
for i=1:D-1
    for j=1:N
        train(j,]]></description><category></category></item><item><title><![CDATA[matlab 使用大全，随机，文件，运算（二）]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/19850305</link><guid>https://blog.youkuaiyun.com/balllee/article/details/19850305</guid><author>balllee</author><pubDate>Mon, 24 Feb 2014 22:37:17 +0800</pubDate><description><![CDATA[1.    开方
sqrt(5)
 



2.matlab的字符串中如何引入变量
for i=1:5
    for j=1:5
s=['Images/',num2str(i),'_',num2str(j)]
      A=imread(s,'BMP');    
   end
end3.取整：
fix：向零取整floor：向小取整round：四舍五入ceil：向大取整4个函数]]></description><category></category></item><item><title><![CDATA[SHELL programing study in linux]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/19037711</link><guid>https://blog.youkuaiyun.com/balllee/article/details/19037711</guid><author>balllee</author><pubDate>Mon, 10 Feb 2014 19:12:17 +0800</pubDate><description><![CDATA[# 显示文件中的前10行 （模拟“head”的行为）
 sed 10q

 # 删除文件中开头的10行
 sed '1,10d' # 删除匹配式样的行
 sed '/pattern/d's/a/b/g g:replace everyplace;without g:replace firsts:replace脚本内容如下： #!/bin/sh echo "number:$#" echo "scn]]></description><category></category></item><item><title><![CDATA[二分类 度量可分类程度指标Hindex IN ，matlab]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/18718923</link><guid>https://blog.youkuaiyun.com/balllee/article/details/18718923</guid><author>balllee</author><pubDate>Fri, 24 Jan 2014 00:19:26 +0800</pubDate><description><![CDATA[二分类 度量可分类程度指标Hindex IN ，matlab
function h = Hindex( pos,neg )
%HINDEX compute hindex for class 2 classification
%  n-d will be fine
[Np,dp]=size(pos);
[Nn,dn]=size(neg);
Ppos=Np/(Np+Nn);
Pneg=Nn/(Np+]]></description><category></category></item><item><title><![CDATA[用MATLAB计算平均值和方差mean&&mse]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/18718781</link><guid>https://blog.youkuaiyun.com/balllee/article/details/18718781</guid><author>balllee</author><pubDate>Fri, 24 Jan 2014 00:14:51 +0800</pubDate><description><![CDATA[function [mean,mse ] = mse( input )
%MSE get mean square error && average
%  by lee
[n,d]=size(input);
mean=0;
mse=0;
for i=1:n
    mean=mean+input(i);
end
mean=mean/n
for i=1:n
    mse=mse+(mean-inpu]]></description><category></category></item><item><title><![CDATA[matlab 使用大全，随机，文件，运算（一）]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/18679149</link><guid>https://blog.youkuaiyun.com/balllee/article/details/18679149</guid><author>balllee</author><pubDate>Thu, 23 Jan 2014 00:18:20 +0800</pubDate><description><![CDATA[1.文件：

1、保存整个工作区

File->Save Workspace as...一个.mat文件

2、保存工作区的变量

在左工作区右击变量名，create M-File

3、save命令

（1）save

将工作区中的所有变量保存在当前工作区中的文件里，文件名为matlab.mat.    MAT文件可通过load函数再次导入工作区

（2）save]]></description><category></category></item><item><title><![CDATA[matlab 中eigs的结果不同问题解决方案]]></title><link>https://blog.youkuaiyun.com/balllee/article/details/18276361</link><guid>https://blog.youkuaiyun.com/balllee/article/details/18276361</guid><author>balllee</author><pubDate>Tue, 14 Jan 2014 22:07:27 +0800</pubDate><description><![CDATA[浏览外国网站，修改初始值v0
OPTS.v0=ones(7923,1);

 [eigvector, eigvalue] = eigs(S,D,6,'LM',OPTS)]]></description><category></category></item></channel></rss>