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说明：  分类器分类器分类器分类器分类器分类器分类器分类器分类器(classion classionclassionclassionclassionclassion)

vectline "vector field line plotter" Depending on the dimension of coordinate axis, vectline can plot both 3D and 2D vector field line.(vectline "vector field line plotter" Depe nding on the dimension of coordinate axis, vectline can plot both 3D and 2D vector field lin e.)

利用matlab仿真绘制不同的广义路径损耗模型(Simulation using matlab draw different generalized path loss model)

从数字电路角度，分析PI(比例和积分）环路滤波电路所组成的闭环控制环路的传输函数以及误差传输函数的形状，从中可以看书环路的peaking，3db带宽以及稳定性等性能(From the perspective of digital circuits, analyze the PI（propotional & integral) loop filter s closed-loop transfer function as well as the error transfer function, from which you can easily see the loop peaking factor, 3db bandwidth, and stability performance of the closed loop)

此资料对fmincon优化函数的功能进行了详细的描述，对我们在编程中对优化函数的使用很有帮助。(This information is optimized function fmincon functions were described in detail in our programming for optimizing the use of helpful functions.)

This code is about short time fourier transform.

某石油公司计划建造一条由东向西的主输油管道。该管道要穿过一个有n 口油井的油田。从每口油井都要有一条输油管道沿最短路经(或南或北)与主管道相连。如果给定n 口油井的位置,即它们的x 坐标（东西向）和y 坐标（南北向）,应如何确定主管道的最优位置, 即使各油井到主管道之间的输油管道长度总和最小的位置?证明可在线性时间内确定主管道的最优位置。(An oil company plans to construct a east to west from the main pipeline. The pipeline to pass through an oil field n wells. Wells from each must have a pipeline along the shortest path (or South or North) connected with the competent Road. If given the location of oil wells in n, that is, their x coordinates (east-west) and y coordinates (north-south), should be how to determine the optimal position in charge of Road, even if the wells to the pipeline in charge of Road between the sum of the smallest length location? proved to be linear time to determine the optimal position in charge of Road.)

这是一个经典的形变模型实施,在一个单一的文件用简单的可以理解的代码。 功能包括两部分一个简单的弱分类器和一个促进部分: 弱分类器试图找到最佳阈值的数据维数对数据进行分离成两个阶级1和1 要求的进一步提高分类器部分迭代,每一步是变化分类权重miss-classified例子。这造成了一连串的“弱分类器”,表现得像一个“强大分类器” (This a classic AdaBoost implementation, in one single file with easy understandable code. The function consist of two parts a simple weak classifier and a boosting part: The weak classifier tries to find the best threshold in one of the data dimensions to separate the data into two classes-1 and 1 The boosting part calls the classifier iteratively, after every classification step it changes the weights of miss-classified examples. This creates a cascade of "weak classifiers" which behaves like a "strong classifier" . )

自发辐射、受激辐射和受激吸收,激光二极管抽运的被动调Q Nd3+:YAG微晶片激光器仿真(Spontaneous emission, stimulated emission and stimulated absorption of laser diode pumped passively Q Nd3+: YAG microchip laser simulation)

计算面积，使用方便！是个测试Matlab的实例！(Calculate the area, easy to use! Test Matlab instance!)