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从网络上搜集的决策树源码，包括C4_5、ID3、CART_iris三个源码，供大家一起学习研究。(Decision tree collected from the network source, including C4_5, ID3, CART_iris 3 source for study and research with everyone.)

快速wds-map算法定位，对wds-map算法的改进。(Rapid WDS-map location algorithm, the WDS-map of the improved algorithm.)

平方环，matlab程序和原理资料，有助于学习载波同步的原理和程序编写(Square ring, matlab procedures and principles of information to help learn the principles and procedures for the preparation of carrier synchronization)

说明：  进行哈夫曼编码，并元素的码字，平均码长等(for Huffman coding, and elements of code words, the average yards long)

Sphere of MATLAB algorithms(球体之演Sphere of MATLAB algorithms算法的MATLAB)

说明：  here is the matlab code for sixty four qam modulation

Persian calender mfile 1392 in matlab

显示一个黑白图像。去掉matlab的边框。(Display a balck & with image. Matlab default frame will not be dispaly)

说明：  带约束算子的粒子群算法，用于matlab环境，对于搞研究的教师有很大帮助(Operator Constrained Particle Swarm Optimization for the matlab environment, engage in research for teachers are very helpful.)

matlab中计算求解近自由电子能带，能有效求解能带个数和宽度(energyband of nearly free electron)