knnclassifier

Moler写的配套书中的源程序，讲的是matlab在数值计算中的应用(Moler book written by matching the source, speaking in Matlab is the numerical calculation of)

简单易用的matlab FFT程序，零频在中间，另外还经常用的matlab绘图代码列了出来(Simple and easy-to-use program matlab FFT, zero frequency in the middle, is also often used matlab drawing code out)

用matlab实现画出基本概率密度函数的相位，能量，实部等的功能(Using matlab to achieve basic probability density function of the draw phase, energy, real function of such)

上传的代码是有关模式识别中的分类实现，并且在坐标系中画出分类线。(Upload code is related to pattern recognition classification implementation,and sorting line drawn in the coordinate system.)

说明：  认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)

This paper presents a new algorithm to extract the fetal ECG from an ECG recorded on the mother’s abdomen. The algorithm consists of two steps: first, ECG of fetus is extracted from the original signal using a two-level wavelet transform. We use Daubechie wavelet transform, which is similar in shape to heart beat wave. The resulted signal is then low-pass filtered using the Savitzky-Golay smoothing filter to attenuate the effect of noise. The filtered signal is considered as the fetal ECG. The algorithm was applied on both synthetic and real ECG signals. The results in this paper show that the proposed algorithm has promising performance.

its used to remove haze..

说明：  本源程序为采用IV辅助变量算法法进行供电负荷预测的，后面还自带了进行模型检验的部分，很适合电力专业的学生学习使用(The source code for the algorithm using method IV auxiliary variable power load forecasting, the model behind the test also comes with some very suitable to use the power of professional learning)

说明：  用matlab建立任意桁架模型，计算节点矩阵，约束矩阵等(Using matlab to establish any truss model, compute node matrix, constraint matrix, etc.)

说明：  matla的100个实用程序，是你学习常用函数必备的资料(matla 100 utility, is that you learn the information necessary common functions)