中文说明：本程序是基于matlab的粗糙集属性约简算法。本程序对算法的功能进行了划分，分别利用子函数对各部分功能进行编写，子函数m文件内有关于该函数功能的详细介绍。
English Description：
This program is based on MATLAB rough set attribute reduction algorithm. This program divides the function of the algorithm, and uses the sub function to write each part of the function. The sub function m file has a detailed introduction about the function.