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chap11
说明： 本目录主要包括：文档和两个源代码。
其中一个源代码是识别程序的，另一个是一个矩阵类库的，书里面也使用过，所以一并附上。
因为已经保存了训练好的网络权值，所以第一次使用识别程序时，可以直接运行\\Release目录下的可执行文件，然后对图片目录中的测试图片进行读入、识别。
当然读者也可以自行用训练样本训练网络，不过要特别注意训练样本的选择，否则可能造成识别率很低。训练样本选择的原则是，尽可能的有代表性，在训练时间不至于太长的情况下，训练样本数目尽量多。
( This directory includes: documentation and two source code.
One of the source code is to identify the procedure, the other is a matrix class library, the book which is also used, so be attached.
Because it has saved the trained network weights, so the first use of identification procedures, you can directly run \ \ Release directory of the executable files, and then tested on the images directory to read pictures, identification.
Of course, readers are free to use the training samples to train the network, but pay special attention to training samples, otherwise it may cause very low recognition rate. Training sample selection principle is that as far as possible, representative, in the long training time Buzhi Yu s case, the number of training samples as much as possible.
)
- 2010-04-11 22:26:09下载
- 积分：1
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MATLABC-C
MATLABC数学函数库在C语言中的应用(MATLABC math library in C language)
- 2012-10-08 10:08:01下载
- 积分：1
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complex network
实现复杂网络受随机攻击和蓄意攻击的仿真结果分析。(The simulation results of complex networks subjected to random attacks and deliberate attacks are analyzed.)
- 2021-03-16 22:19:21下载
- 积分：1
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kf
说明： 使用卡尔曼滤波器对信号进行滤波，不局限于工频干扰的频率，简单方便(Kalman filter using the signal filtering, frequency interference is not limited to frequency, simple)
- 2010-04-19 13:17:42下载
- 积分：1
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junyunxianzhe
说明： 波束图定义为当阵列输入为平面波时，阵列输出与平面波入射角的关系。阵列天线的方向图是全方向的，但阵列的输出经过加权求和后，却可以使阵列接受的方向增益聚集在一个方向上，相当于形成一个波束，(The wave beam chart defines to work as when array input for plane wave, array output and plane wave incidence angle relations. Array antennas s directional diagram is entire direction, but array output after weighting summation, actually may cause the directive gain which the array accepts to gather in a direction, is equal in forms wave beam, )
- 2010-04-25 18:48:41下载
- 积分：1
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DSPII_USTC_01
传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能：
1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线；
2） 给出了最陡下降法以及LMS算法的计算公式；
3） 用MATLAB产生了方差为0.05, 均值为0白噪音S(n)，并画出某次采样得到的波形；
4） 根据 2）中的公式，并利用 3）中产生的S(n)，在 1）中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线；
5）用MATLAB计算并画出了LMS法时误差随时间n的变化曲线（对应S(n)的某一次的一次实现）和e(n)波形；
6）在 1）中的误差性能曲面的等值曲线上，叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线；
7）最终对结果进行了分析，具体见压缩包的word文档。
(Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:
A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve
2 ) gives the steepest descent method and the LMS algorithm formula
3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)
- 2013-11-06 13:12:36下载
- 积分：1
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svm
支持向量机原理与仿真
(Support vector machine theory level simulation)
- 2014-01-05 16:19:37下载
- 积分：1
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markov
求解马尔科夫过程的一个过程，输入转移强度矩阵后，可以求得状态概率(A process of solving Markov process, the intensity of the input transfer matrix, we can obtain the state probability)
- 2014-04-28 23:16:55下载
- 积分：1
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Handoff
辛苦搜集的频谱切换方面的源程序，给大家分享一下(Hard to collect spectral switching of the source, to share with you)
- 2014-05-07 21:00:10下载
- 积分：1
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gongetidu
共轭梯度法的matlab实现，给出任意的一个对称矩阵，可通过较小的迭代次数得到所要求精度的数值解(Conjugate gradient method matlab to achieve, given any symmetric matrix by a smaller number of iterations to obtain the required accuracy of the numerical solution)
- 2012-11-12 21:37:19下载
- 积分：1
