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H-guide-FDTD-Code
H-Guide Matlab Code by FDTD nethod
- 2009-09-24 23:28:43下载
- 积分：1
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matlab
聚类算法，不是分类算法。分类算法是给一个数据，然后判断这个数据属于已分好的类中的具体哪一类。聚类算法是给一大堆原始数据，然后通过算法将其中具有相似特征的数据聚为一类。这里的k-means聚类，是事先给出原始数据所含的类数，然后将含有相似特征的数据聚为一个类中。所有资料中还是Andrew Ng介绍的明白。首先给出原始数据{x1,x2,...,xn}，这些数据没有被标记的。初始化k个随机数据u1,u2,...,uk。这些xn和uk都是向量。根据下面两个公式迭代就能求出最终所有的u,这些u就是最终所有类的中心位置。(Clustering algorithm, not a classification algorithm. Classification algorithm is to give a figure, and then determine the data belonging to a specific class of good which category. Clustering algorithm is to give a lot of raw data, and then through the algorithm which has similar characteristics data together as a class. Here k-means clustering, is given in advance the number of classes contained in the raw data, then the data contain similar characteristics together as a class. All information presented in or Andrew Ng understand. Firstly, raw data {x1, x2, ..., xn}, the data is not labeled. K random initialization data u1, u2, ..., uk. These are the vectors xn and uk. According to the following two formulas can be obtained final iteration all u, u is the ultimate all these classes the center position.)
- 2014-02-18 09:59:02下载
- 积分：1
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colormix
find the ROI of the image and removes the color outside the ROI
- 2009-12-04 15:33:43下载
- 积分：1
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Sample-subset-partitioning
说明： 近红外光谱分析中要从复杂的信息中有效地提取相关信息建立可靠的模型，选择的训练集要具有较好的代表性。目前．样本的选择方法主要包括random sampling(RS)，Kennard—Stone(KS)．sample set partitioning based on joint x-y distance(SPXY)等方法 。(selecting a representative subset in NIR data using SPXY， the random sampling，and Kennard—Stone methods )
- 2021-05-09 19:18:34下载
- 积分：1
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cx5
用Hausdorff距离对两角点集进行配准，得到点集间的仿射变换，从而实现图像的自动配准。此算法以角点作为Hausdorff距离的配准特征，与直接选用边缘来配准的方法相比较，大大减小计算量。(Hausdorff distance on the corners with a point set registration, be affine transformation between sets in order to achieve automatic image registration. This algorithm is based corner as the Hausdorff distance matching characteristics, and use Edge to direct registration method of comparison, greatly reduced computation.)
- 2010-05-09 21:36:19下载
- 积分：1
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fdtd_3d
说明： 三维模式时域有限元求解电磁场，计算电磁学初学者，编写的程序代码，希望可以帮助广大网友(Three-dimensional time-domain finite element method solves electromagnetic field, calculates electromagnetic beginners, compiles the program code, hoping to help the vast number of netizens.)
- 2019-06-29 17:41:00下载
- 积分：1
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cross&auto correlation
说明： 该程序可以求得任意两个长度相同的离散信号的互相关系数以及自相关系数，并绘制其图像(The program can get the cross-correlation coefficient of any two discrete signals with the same length, and draw the image of the cross-correlation coefficient)
- 2021-04-10 10:38:59下载
- 积分：1
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c5546089625d
基于MATLAB的电力系统潮流计算的程序，比较完整，适合入门新手学习。(MATLAB-based power system load flow calculation program , complete and suitable for beginners novice learning .)
- 2012-04-16 14:28:41下载
- 积分：1
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dm
说明： code of digital modulation with memory
- 2014-11-25 03:45:11下载
- 积分：1
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Untitled
Okumura analyzed path-loss characteristics based on a large amount of experimental data collected around Tokyo, Japan. He selected propagation path conditions and obtained the average path-loss curves under flat urban areas. Then he applied several correction factors for other propagation conditions, such as: Antenna height and carrier frequency Suburban, quasi-open space, open space, or hilly terrain areas Diffraction loss due to mountains Sea or lake areas Road slope Hata derived empirical formulas for the median path loss (L50) to fit
Okumura curves.
- 2013-12-28 23:16:24下载
- 积分：1
