中文说明：用matlab实现的最小二乘法辨识，从文件中读取数据然后辨识。包括各种最小二乘的相关方法，有普通最小二乘，广义最小二乘，递归最小二乘等等。
English Description：
MATLAB implementation of least squares identification, reads data from a file and then read. Include a variety of method of the least squares, ordinary least squares, generalized least squares, recursive least squares, and so on.