paixu

sar imaging algrithms

基于语音增强程序的相关基本程序代码实用性强(speech enhancement based on the procedures related to the basic program code practicability)

this file is leach protocol on matlab which is a most common algorithm in wsn

建立cost231仿真模型函数，cost231是一种无线信道(Cost231 simulation model-building function, cost231 is a wireless channel)

所有关于Leach协议Matlab仿真都可运行，(Matlab simulation of all on the Leach agreement can be run)

基于MATLAB的维纳滤波和逆滤波复原，在程序中可以看到，维纳滤波器的组成。可以更好的实现逆滤波复原算法。(MATLAB based on Wiener filtering and inverse filtering to recover, the program can be seen, the Wiener filter. We can better achieve the inverse filter restoration algorithm.)

This paper describes two digital implementations of a new mathematical transform, namely, the second generation curvelet transform [12, 10] in two and three dimensions. The first digital transformation is based on unequally-spaced fast Fourier transforms (USFFT) while the second is based on the wrapping of specially selected Fourier samples. The two implementations essentially differ by the choice of spatial grid used to translate curvelets at each scale and angle. Both digitaltransformations return a table of digital curvelet coefficients indexed by a scale parameter, anorientation parameter, and a spatial location parameter. And both implementations are fast in the sense that they run in O(n2 log n) flops for n by n Cartesian arrays in addition, they are also invertible, with rapid inversion algorithms of about the same complexity.

说明：  ieee33节点系统采用前推回代法，matlab编程，(ieee33forwardbackward)

Using TF-IDF to Determine Word Relevance in Document Queries : In this paper, we examine the results of applying Term Frequency Inverse Document Frequency (TF-IDF) to determine what words in a corpus of documents might be more favorable to use in a query. As the term implies, TF-IDF calculates values for each word in a document through an inverse proportion of the frequency of the word in a particular document to the percentage of documents the word appears in. Words with high TF-IDF numbers imply a strong relationship with the document they appear in, suggesting that if that word were to appear in a query, the document could be of interest to the user. We provide evidence that this simple algorithm efficiently categorizes relevant words that can enhance query retri

SOPHISTICATED WAY FIND THE SHORTEST DISTANCE AMONG THE NEIGHBOR POINTS