erjinzhi改进pso_0802

灰色关联度分析程序，计算几者之间的灰色关联度大小(Gray correlation analysis program that calculates several persons gray correlation size.)

Code for obtaining Center of math of polygon. enjoy it.

In this paper, we introduce a new machine-learning-based data classification algorithm that is applied to network intrusion detection. The basic task is to classify network activities (in the network log as connection records) as normal or abnormal while minimizing misclassification. Although different classification models have been developed for network intrusion detection, each of them has its strengths and weaknesses, including the most commonly applied Support Vector Machine (SVM) method and the Clustering based on Self-Organized Ant Colony Network (CSOACN). Our new approach combines the SVM method with CSOACNs to take the advantages of both while avoiding their weaknesses. Our algorithm is implemented and evaluated using a standard benchmark KDD99 data set. Experiments show that CSVAC (Combining Support Vectors with Ant Colony) outperforms SVM alone or CSOACN alone in terms of both classification rate and run-time efficiency.

Direct sequence spread spectrum (DSSS) communication systems has been widely used in these years for its advantage of wide spectrum, low working Signal-to-Noise ratio (SNR), anti-interference, anti-multipath effect and capability of LPI and LPD. They are increasingly replacing conventional communication forms and obtaining extensively applications in modern military and commercial communication systems, for example, CDMA communication system, GPS , measuring and control system, satellite chain, identification of friend or foe and etc. Therefore, corresponding DSSS electronic counter technique becomes a big problem to solve in electronic warfare domain. DSSS electronic counter technique including blind detection, blind parameter estimation and spreading sequences estimation. For the issue of DSSS electronic counter technique of DSSS/QPSK signal damaged by strong additive white Gaussian noise (AWGN), the main research content in this dissertation as follow.

这是关于MUSIC算法的文档。希望对初学空间谱估计的人有帮助！(This is the document of MUSIC algorithm. I hope it can help beginners of spatial spectrum estimation. )

递推算法与最小二乘具有相同的结构，但基本原理不同(Recursive algorithm has the same structure as least square, but the basic principle is different.)

这是一份有关matlab开发练习的源程序，希望大家支持下。(This is a practice matlab source development, I hope you will support the next.)

基于最佳邻域的图像修复算法，可在图像编码传输系统中得到应用(Best Neighborhood Matching: An Information Loss Restoration Technique for Block-Based Image Coding System)

说明：  线性二自由度车辆模型状态参数估计粒子滤波算法，车辆理想状态向量已和观测向量已给出(Linear two degrees of freedom vehicle model state estimation particle filter, vehicle and observation over the state vector has been given vector)

关于LDPC的。是Mackcy网站上的LDPC编译码程序。(On the LDPC. Mackcy site is LDPC coding and decoding procedures.)