background

基于MP的时间频率分布程序，该程序可以有效的将信号的时频分布显示出来(MP-based time-frequency distribution of program that can effectively time-frequency distribution of the signal displayed)

three level inverter

conversor digitalpara relojes de presision

说明：  通过坐标轴，随即显示坐标轴上的值域及坐标的位置（x,y轴的位置）。(rand number show)

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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 .)

说明：  基于倒谱法的基音周期检测，有着不错的参考意义。(The pitch period detection based on cepstrum method has a good reference value.)

此为matlab教程，主要是关于simulink的实验教程，是学校的内部资料。(This is a matlab tutorial, mainly on the experimental simulink tutorial, is the school' s internal information.)

matlab实现logistic回归 利用牛顿迭代的方法得到最后的回归参数(matlab realize logistic regression using Newton iteration method to get the final regression parameters)

elective syllabus for BE IT