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his little function rounds a number (or the elements of a vector ot matrix) towards the nearest number with N significant digits. Examples: roundsd(0.012345,3) returns 0.0123 roundsd(12345,2) returns 12000 This is a useful complement to Matlab s ROUND, ROUND10 and ROUNDN (Mapping toolbox), especially when dealing with data with a large variety of order of magnitudes. I was about to upload this file when I found "sd_round.m" by Edward Zechmann (see aknowledgment), which has similar feature (and more). But, because my script is very different in coding (much much shorter), I decided to share it anyway.

本资源是3层的自编码器加上稀疏正则项约束的matlab代码。隐层激活函数选sigmoid函数，输出层选线性函数，程序中以一个标准数据集sonar为例，使用该方法可以做无监督表征学习，数据压缩，多任务学习等(This resource is a 3-layer self-encoder plus matlab code for sparse regular term constraints. The hidden layer activation function selects the sigmoid function, and the output layer selects the linear function. The program uses a standard data set sonar as an example. This method can be used for unsupervised representation learning, data compression, multi-task learning, etc.)

大学时代的第一个游戏作品，相当的简单的使用MFC的框架实现的一个小弹珠台游戏。其中的背景图片为使用网络上的，其余为自己画滴。新手学习用吧。-University of times the first game works fairly simple framework for the use of MFC realize a small game Pinball. In which the background image to use on the network, and the rest for their own drip painting. Novice to learn to use it.

卡尔曼算法实现及MATLAB仿真，以及simulink仿真模块(Realization of Kalman algorithm and Simulation of MATLAB, and Simulink simulation module)

小世界网络的试验程序!可以观察小世界网络的生成过程和结果!-small world network testing procedures. Can observe small world network formation process and results!

搜狐中国人社区Flash版中国省份地图，以前在chinaren网站发现的Flash中国地图 包括所有省会城市，带地图热点信息，鼠标放上去，对应省份会高亮显示，动画效果相当不错哦，自带Flash源文件，修改完善更方便。

ADV7171是目前功能最全面的视频编码芯片，本程序完成对其的初始化设置功能。-ADV7171 is currently the most comprehensive video encoder chip, the process has completed its initialization settings.

有关于D2D通信中，信道仿真的编程是基于python语言的。(Programming for channel emulation in D2D communication)

Dct of 4*4 matrix of an image

说明：  卡尔曼滤波算法，画图与Simulink；是一种很好用的估计算法(Kalman filter algorithm, plot and Simulink)