matlab 函数逼近与拟合源程序代码

说明：  虽然 AdaBoost 算法的检测速度快，误识率低，但是在样本的权重更新过程中，对于分类错误样本中的正、负样本没有加以区分，不利于提高正样本的识别率。本文提出一种新的权重更新方法，对于分类错误的样本，对判断错误的正样本给更高的权重，使得算法在下一轮迭代时，更加关注对分类错误的正样本的学习，从而提高对正样本（人眼）的检测率。采用基于最小二乘法对眼部的外轮廓进行椭圆拟合，根据拟合椭圆的参数来判断眼睛的睁闭状态；采用结合 PERCLOS 和眨眼频率的方法，对疲劳状态进行检测。(Although AdaBoost algorithm has fast detection speed and low false recognition rate, in the process of sample weight updating, there is no distinction between positive and negative samples in classification error samples, which is not conducive to improving the recognition rate of positive samples. In this paper, a new weight updating method is proposed, which gives higher weight to the positive samples of classification errors, so that the algorithm pays more attention to the learning of the positive samples of classification errors in the next iteration, so as to improve the detection rate of the positive samples (human eyes). Based on the least square method, the eye contour is fitted with ellipse, and the opening and closing state of eyes is judged according to the parameters of fitting ellipse; the fatigue state is detected by combining PERCLOS and blinking frequency..)

说明：  C语言梯形积分，通过公式计算积分，可以用来代替matkab的函数(Trapezoid integral in C language)

simp ns2 new protocols nam c++

说明：  7.0版本以上UO脱机脚本，功能强大，非常好用，适合挂小号(Uo offline script above version 7.0, powerful, very easy to use, suitable for small size)

说明：  我提供了一个基于FXLMS的单通道前馈有源噪声控制系统的一个小例子. 为了减少噪声，我们使用控制器C（z）产生另一个“噪声”yw（k）。我们希望它破坏性地干扰X（k）。这意味着控制器必须是传播介质P（z）的模型。采用最小均方算法对控制器系数/权重进行调整。 然而，还有流体介质S（Z）留在致动器和传感器之间。我们称之为二次传播路径。所以，为了使解正确，我们需要用SH（z）来补偿调整过程，这是S（z）的估计(I provided him a little example of a single channel feed-forward active noise control system based on the FxLMS. To reduce noise, we generate another 'noise' yw(k) using the controller C(z). We hope that it destructively interferes x(k). It means that the controller has to be a model of the propagation medium P(z). Least mean square algorithm is applied to adjust the controller coefficient/weight. However, there is also fluid medium S(z) that stay between the actuator and sensor. We called it the secondary propagation path. So, to make the solusion right, we need to compensate the adjustment process using Sh(z), which is an estimate of S(z).)

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可以跟踪ECSHOP商城订单状态，实时提醒。(It can track the order status of ECSHOP mall and remind it in real time.)

说明：  用于abaqus模拟三维马氏体相变的UEL子程序。(3D martensitic transformation UEL subroutine.)

说明：  6SV 是一个能够计算矢量（偏振）辐射传输的软件包，对于地气、海气等都有子程序进行计算。适用领域比较广。(6SV is able to calculate the vector (polarization) radiative transfer package, for to air, sea and air and others have calculated subroutine. Relatively wide field of application.)

说明：  基于matlab的同步风力发电模型仿真，可以放心下载使用(Matlab - based synchronous wind power model simulation, you can rest assured to download)