MATLAB

finds the ratio between number of local extrema of a signal (vector) to the size of the signal (vector)

是一種用以衡量兩張數位影像相似程度的指標。當兩張影像其中一張為無失真影像，另一張為失真後的影像，二者的結構相似性可以看成是失真影像的影像品質衡量指標。(Is a digital image to measure the similarity of two indicators. Two images when one of them is undistorted image and one for image distortion after the structural similarity between the two images can be viewed as a measure of the quality of the image distortion.)

训练错误率和交叉验证错误率相等，在样本比较大时，这个结果是可以预期的；训练错误率一般低于测试错误率，但是当样本数据比较少时，实验也出现了意外，样本多的那组测试错误率比样本少的训练错误率还要小；在本实验中，同组数据的交叉验证错误率比独立测试错误率高，这个反常现象是因为样本的原因所致，交叉验证的样本小，而独立测试时所用训练样本数目大，因而出现这种情况。分类线上，fisher准则是一条直线，而贝叶斯分类器实际上是一个类似椭圆的封闭曲线；很明显，贝叶斯分类器比fisher分类器要好。(Training error rate and cross- validation error rates are equal, the larger the sample , this result is to be expected training error rate is generally lower than the test error rate , but when comparing the sample data came from the experiment there was an accident, that more samples group test error rate less than the training sample error rate is smaller In this experiment, the same set of data cross-validation error rate than independent test error rate, this anomaly is because the sample of reasons , cross-validation sample is small,And independent testing large number of training samples used , resulting in this situation.Classification online , fisher criterion is a straight line , while the Bayesian classifier is actually a closed curve similar to elliptical It is clear that the Bayesian classifier is better than the fisher classifier .)

数字电视的主要测量技术指标 星座图 QAM调制(dtv test stand)

基于matlab灰色关联度计算的实现，??趍atlab灰色关联度计算的实现，基于matlab灰色关联度计算的实现，(Matlab based on gray correlation degree calculated to achieve,? ?趍atlab gray correlative degree of realization of the calculation, based on gray relational grade calculation matlab realization)

使用matlab编程实现OFDM的收发一张图片，查看相关性能！(Use matlab programming OFDM transceiver, a picture, view the associated performance!)

script that downloads, converts and saves from a webpage using Matlab

本程序实现对随机信号的8PSK调制，程序里面有详细注释，很容易换成想要信号的8PSK调制，欢迎下载。(This program implements the random signal 8PSK modulation, which has detailed program notes, easily replaced want 8PSK modulation signal, welcome to download.)

artificial intelligence

一种应用牛顿迭代法的MATLAB源程序 解决的是方程求根的问题(A MATLAB application of Newton iteration method to solve the source problem of finding roots of equations)