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BIRCH (balanced iterative reducing and clustering using hierarchies) is an unsupervised data mining algorithm used to perform hierarchical clustering over particularly large data-sets. An advantage of Birch is its ability to incrementally and dynamically cluster incoming, multi-dimensional metric data points in an attempt to produce the best quality clustering for a given set of resources (memory and time constraints). In most cases, Birch only requires a single scan of the database. In addition, Birch is recognized[1] as the, "first clustering algorithm proposed in the database area to handle noise (data points that are not part of the underlying pattern) effectively".

雷达、声纳中常用的线性调频脉冲的模糊函数(Chirp ambiguity function)

tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network.

使用matlab制作SLM的会聚球面波相位全息图，欢迎大家借鉴(The use of MATLAB to produce SLM phase hologram of convergent spherical wave is welcomed for your reference.)

用matlab&spss实现聚类分析,源自《计量地理学》（徐建华，华东师范大学）。(Achieve with matlab & spss cluster analysis.)

是matlab编写的一个支持向量机的程序，经测试有效。程序里附带了了demo，有注释。(Matlab are prepared by a support vector machine procedures, tested and effective. Program comes with a demo, there is the Notes.)

比较普通的EMd分解的matlab程序，已供初学者学习使用(More common EMd decomposition matlab program, has for beginners learning to use)

这是一本介绍MATLAB 与用户程序接口的书籍，讲的很详细，需要的人可以下载，会很快提升你的认识(This is an introduction MATLAB interface to the user program books, talk in great detail, people need to be able to download, will soon enhance your understanding )

Matlab基于卡尔曼的视频序列帧图像的跟踪程序(Matlab based Calman frames of a video sequence image tracking procedures)

计算方法，曲线插值，普通插值法。自编程序。附带图片。(Calculation methods, curve interpolation, ordinary interpolation. Self programming. With pictures.)