junhenghua

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

适用于线列阵的常用定位算法，包括CBF,MVDR以及MUSIC(applicable to common line array positioning algorithm, including CBF, and MVDR MUSIC)

vector control of induction motor

模拟退火粒子群算法在matlab中应用，很实用，很好用(Simulated annealing particle swarm algorithm in matlab applications, very practical, very good with)

利用SVM进行多分类的matlab 程序，m文件(Multi classification by using SVM matlab program, the m file)

支持向量机matlab程序，版本libsvm－2.89，包括接口文件(Matlab program of support vector machine)

平均互信息函数，计算两个时间序列的互信息量，修改(The average mutual information function to calculate the mutual information of two time series, modified)

a program which implements a finite difference algorithm for a predator-prey system with spatial variation in 2D

自同期并列模型，simulink仿真，用于研究带故障的自同期并列问题(From the same period in parallel model, simulink simulation for research the same period in parallel with the failed issue)

岭回归分析（Ridge regression）是一种专用于共线性数据分析的有偏估计回归方法，这套源码是对ridge regression算法的一种实现，附有测试实例(Ridge regression (Ridge regression) is a special collinearity data analysis unbiased estimate of the regression method, this set of source code is an implementation of the ridge regression algorithm with test case)