nibian

1998年全国大学生数学建模竞赛A题:收益与风险 有效投资曲线

说明：  带交叉因子的粒子群优化算法matlab源程序 对大家非常有帮助(With cross-factor of the particle swarm optimization algorithm matlab source code is very helpful to everyone)

计算积分，给你积分上下限，可以计算积分，简单的程序(Integration )

对森林生态系统的动力学仿真很有用的东西值得大家学习学习(On the forest ecosystem dynamics simulation is useful to learn something worth learning)

matlab下模式识别代码 感知机，最小二乘法(Under the pattern recognition code matlab)

用matlab编写的牛顿迭代方法求解非线性方程组：数值分析中很经典的代码(a matlab code of newton method solve system of nonlinear equations)

马氏距离是一种有效地计算两个样本集之间相似度的算法（数据之间协方差距离），与欧式距离相比，它考虑了各种特征之间的联系。本实验旨在通过给出的样本数据，设计一个最小马氏距离分类器并对测试点进行分类，然后将其与最小欧式距离分类器进行比较，实验得出当协方差矩阵为单位阵时，最小马氏距离分类器将与最小欧式距离分类器等价。本实验还根据实验样本设计贝叶斯分类器进行分类，并与最小马氏距离分类器进行比较，比较两种分类器的分类效果。(Markov distance is an effective method to compute the similarity between the two samples (data covariance distance), compared with the Euclidean distance, which takes into account the link between different characteristics. This experiment aimed at through the given sample data, design a minimum Mahalanobis distance classifier and classify the test points, and then compare it with the minimum Euclidean distance classifier. Experimental results showed that when the covariance matrix is a unit matrix, minimum Mahalanobis distance classifier with the minimum Euclidean distance classifier equivalent.In this experiment, according to the experimental design of the Bias classifier, and compared with the minimum distance classifier, the classification results of the two classifiers are compared.)

space coding with maxima ratio combining.

QPSK在瑞利信道下的仿真误码率，用于处理信号使用QPSK载波时候的信息计算(QPSK simulation in Rayleigh fading channel)

傅里叶变换的程序，是matlab的m文件，可以直接运行(Fourier transform procedure is matlab m-files can be run directly)