interpolation-and-data-fitting

rotordynamics simulation example

数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。 (Digital modulation is the spectrum shifting to high frequency digital baseband signals, suitable for the formation of bandpass signal transmission in the channel. Digital modulation basic amplitude keying (ASK), frequency shift keying (FSK), the absolute phase shift keying (PSK), relative (differential) phase shift keying (DPSK). At the receiving end can be used to dry the demodulation or non coherent demodulating the digital baseband signal. )

时变时滞系统仿真程序,解决带有时滞的动态复杂系统的仿真编程(Time-varying delay system simulation program )

基于MFCC的语音识别，matlab程序(MFCC-based speech recognition, matlab program)

说明：  用来计算固有模态函数（IMF）瞬时频率及振幅包络的代码(The function FA computes a frequency and amplitude of data(n,k), where n specifies the length of time series, and k is the number of IMFs. )

matlab时频分析源代码 很好很强大。希望对您有用(matlab source code for a good time-frequency analysis is very powerful. Hope useful to you)

Abstract There are a number of interesting variable selection methods available beside the regular forward selection and stepwise selection methods. Such approaches include LASSO (Least Absolute Shrinkage and Selection Operator), least angle regression (LARS) and elastic net (LARS-EN) regression. There also exists a method for calculating principal components with sparse loadings. This software package contains Matlab implementations of these functions. The standard implementations of these functions are available as add-on packages in S-Plus and R. Keywords LASSO, LARS, SPCA, Matlab, Elastic Net, Sparse, Sparsity, Variable selection

字典树的基本功能是用来查询某个单词（前缀）在所有单词中出现次数的一种数据结构，它的插入和查询复杂度都为O(len),Len为单词（前缀）长度，但是它的空间复杂度却非常高，如果字符集是26个字母，那每个节点的度就有26个，典型的以空间换时间结构。(The basic function of the dictionary tree data structure is used to query a number of times a word (prefix) appears in all the words, which insertion and query complexity are O (len), Len is a word (prefix) length, but its space complexity is very high, if the character set is 26 letters, and that the degree of each node will have 26, the typical structure of space for time.)

Implementation of two layer multiperceptron neural networks

canny算字进行图像处理的边缘检测程序。canny算子canny算子(canny operatorcanny operatorcanny operatorcanny operatorcanny operatorcanny operator)