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均值变点是统计学中常用的变点分析方法，其主要思想如下： 假设有一组数据，随着某个指标变化（增大），其值逐渐增加并趋于稳定，如何判断在这个过程中是否出现了突变的情况，异样的情况？ 均值变点分析方法提供了一种思路，大概如下： 1 计算总的均值和方差； 2 循环将这组有序数据分成两组，X1，X2 计算各组的均值和方差， 计算总方差与分组方差之和的差； 3 得到变点(The change point of mean is a commonly used change point analysis method in statistics. Its main ideas are as follows: If there is a set of data, as a certain index changes (enlargement), its value increases gradually and tends to be stable. How to judge whether there is a sudden change in the process and the unusual situation? The mean change point analysis method provides a way of thinking, which is as follows: 1 the total mean and variance are calculated. The 2 cycle divides the ordered data into two groups, X1, X2. Calculate the mean and variance of each group. The difference between the sum of the total variance and the group variance is calculated. 3 get a change point)

简单聊天室服务器源码-simple chat room server source

获取代理IP源码程序，结合易语言扩展界面支持库和互联网支持库、多线程支持库，读取分析网页内容，得到代理IP地址。(Get proxy IP source program, combined with easy language support library expansion interface and Internet support libraries , multithreading support libraries , read the analysis of web content , obtain the proxy IP address .)

H.264视频压缩熵编码和网络传输的研究，大 家 请 自 行 辨 别下 载。(H.264 video compression entropy coding and network transmission study to identify everyone at your own download.)

说明：  The C Programming Language若干行代码网络平台输出测试(A "Hello, World!"program generally is a computer program that outputs or displays the message "Hello, World!". Such a program is very simple in most programming languages, and is often used to illustrate the basic syntax of a programming language. It is often the first program written by people learning to code.)

说明：  matlab 天牛群算法，对原始的天牛须算法进行了，将其与例子群算法结合，结果表明优于粒子群算法和天牛须算法。(Matlab longicorn swarm algorithm, the original longicorn whisker algorithm is carried out, and combined with example swarm algorithm, the results show that it is better than particle swarm optimization and longicorn algorithm.)

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C# 自动拨号程序 源码下载

会员管理系统，asp+access数据库，简单实用，比较容易掌握，是初学asp的好帮手(Member Management System, asp+ Access database, simple and practical, it was relatively easy to master, is a good helper beginner asp)

实现网络消息信史服务的程序，程序很简单，实用。-network news messenger service procedures, the procedures are simple and practical.