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李智仁的机器学习讲义，2006年暑期版本，详细讲解了机器学习相关内容(Li Zhiren machine learning lectures, summer 2006 version, explained in detail the contents of machine learning related)

采用EM，期望最大方法，估计QPSK调制方式下的信噪比(Using EM, expectation maximization method to estimate the signal to noise ratio under QPSK modulation)

Matlab code to study the decorrelation and energy packing efficiency of three transform techniques: Karhunen-Loève transform (KLT), discrete-cosine transform (DCT), and Walsh-Hadamard transform (WHT). Using a given vector of signal samples, it transforms the signal vector, quantize the transformed samples, and reconstruct the signal samples from the quantized samples

数据库的完整性控制熟悉利用企业管理器为列创建DEFAULT约束、为列创建CHECK约束、为列创建UNIQUE约束、为列创建不允许为空约束、创建PRIMARY KEY约束、创建FOREIGN KEY约束(Integrity control of the database use Enterprise Manager to create the familiar column DEFAULT constraint, create a CHECK constraint for a column, create a UNIQUE constraint for a column, create a column does not allow null constraint, create a PRIMARY KEY constraint, create FOREIGN KEY constraint)

计算水准网的条件平差初级代码，可以酌情修改使用！！！(Conditions adjustment is calculated net primary level code can be modified to use discretion! ! !)

说明：  光学中杨氏双缝干涉仿真程序。可以是准单色光和单色光。(optics Young's double slit interference simulation program. It was a quasi-monochromatic light and monochromatic light.)

伪随机采样，97小波迭代收缩压缩传感，效果不错，方法简单(Pseudo-random sampling, iterative shrinkage of wavelet compression sensor 97, the effect is good, simple)

层析分析法模型，能实现评价权重的确定，并进行一致性检验(AHP-Analytic Hierarchy Process)

take the MATLAB language, and cite several examples to explain in detail what is the genetic algorithm

ultra wide band simulation 5