simplisma

Implimentation of DCT based image compression

Jacobi矩阵一般是坐标变换时用的——这个坐标系的坐标依次对那个坐标系的坐标求偏导数即得Jacobi矩阵。积分时从直角坐标变到球坐标、极坐标肯定要在积分号里乘上Jacobi矩阵的行列式。 若其特征值全为正，则此Jacobi矩阵正定，即它的任何二次型都大于零。并且如果是对称Jacobi矩阵，还可以实相合于一个单位阵。是比较强的条件。矩阵A的特征值是这个关于x的方程的所有根 det(A-xI)=0(Jacobi)

SFSDP is a Matlab package for solving sensor network localization problems. The package contains four functions, SFSDP.m, SFSDPplus.m, generateProblem.m, test SFSDP.m, and some numerical examples.

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)

不同滚降系数条件下余弦滚降时域波形的比较。(Different roll-off factor conditions Cosine waveform comparison.)

roc曲线绘制程序 关于检测阈值的函数曲线(Roc curve drawing program roc curve is a function of detection threshold curve)

FDTD法计算平行耦合双微带线电容电感参数的程序(FDTD method parallel microstrip line coupling capacitance- inductance parameters of the process)

打开一幅图片，对其进行个性化处理，包括亮度调整，去除噪声，细节化等等(open an image,we process it personally,including intensity adjust,remove noise and so on)

由2个麦克风组成的麦克风阵列，画出它的方向图(Microphone arrays of the two microphones, shown in Fig its direction)

LIBSVM 是台湾大学林智仁 (Chih-Jen Lin) 博士等开发设计的一个操作简单、易于使用、快速有效的通用 SVM 软件包，可以解决分类问题（包括 C- SVC 、n - SVC ）、回归问题（包括 e - SVR 、 n - SVR ）以及分布估计（ one-class-SVM ）等问题，提供了线性、多项式、径向基和 S 形函数四种常用的核函数供选择，可以有效地解决多类问题、交叉验证选择参数、对不平衡样本加权、多类问题的概率估计等。(LIBSVM is林智仁Taiwan University (Chih-Jen Lin) Dr. develop design a simple, easy to use, fast and effective generic SVM software package, can solve the classification problems (including the C-SVC, n- SVC), regression ( including e- SVR, n- SVR) as well as the distribution of estimates (one-class-SVM) and so on, provides a linear, polynomial, radial basis function and the S-shaped kernel function of four commonly used for selection, can effectively to solve a wide range of issues, cross-validation to choose the parameters of the imbalance in the weighted sample, multi-category probability estimation.)