nulbasis

输入抛物面的一组三维离散点坐标，采用最小二乘算法拟合该抛物面方程(Enter a set of three-dimensional parabolic coordinates of discrete points, using least squares algorithm to fit the parabolic equation)

This program is used to analyze the effects of the spreading factor on the performance of MC-CDMA system.

这个是基于matlab的二次型的最优化问题的课件，值得一看。(This is based on the matlab quadratic optimization problem of the courseware, worth a visit.)

已知系统的差分方程，用matlab实现输出信号的自相关计算并画出图形。(Differential equations known system, the output signal using matlab autocorrelation calculated and drawn graphics.)

进行特征选择，利用权重进行特征选择，代码解释充分(Feature selection is carried out, feature selection is carried out with weight, and the code is fully interpreted.)

here is program is related to optimization method, gui, regression, graph.

介绍了 Shannon 和 Huffman 编码的基本原理及 MATLAB实现方法，给出了编码实例,并进行了分析比较。 (Shannon Huffman coding is introduced and the basic principle and MATLAB methods, gives code examples, and are analyzed and compared.)

几个常见的用于聚类分析的指标，包括紧密度，离散度等(some clustering analysis indexes)

说明：  波动方程有限差分数值模拟，采用二阶差分，AEA自由表面边界条件(Finite difference numerical simulation of wave equation using second order difference and AEA free surface boundary conditions)

卷积编码和viterbi译码实现参考的一些论文(reference paper used to realize convolution code and viterbi decode)