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FDTD(PML)
a PML FDTD. computational domain
- 2009-04-01 00:56:18下载
- 积分：1
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matlab99999999
各种matlab代码，实现各种功能，供查阅者参考，熟悉matlab软件的使用(x=linspace(0,1,21)
y=linspace(0,1,21)
[X,Y]=meshgrid(x,y)
z=(X.*Y)./(X+Y)
meshc(X,Y,z)
)
- 2011-07-11 15:54:13下载
- 积分：1
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gradient descent
说明： 梯度下降法是一個一階最佳化算法，通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值，必須向函數上當前點對應梯度（或者是近似梯度）的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索，則會接近函數的局部極大值點；這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)
- 2019-02-21 23:13:19下载
- 积分：1
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kalmanfilterpinhuasuanfayuDNSchengxu
LBL卡尔曼滤波/平滑算法与DNS误差参数辨识程序(LBL Kalman filtering/smoothing algorithm with the DNS error parameter identification procedures)
- 2007-08-29 19:20:12下载
- 积分：1
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SVM_ToolBox_MATLAB
Matlab 的支持向量机的工具箱
Matlab 的支持向量机的工具箱(Matlab SVM Matlab Toolbox SVM Toolbox)
- 2007-01-10 12:45:38下载
- 积分：1
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fdistance
已知两点经纬度，计算两点之间距离。
利用大地坐标！(The known longitude and latitude calculate the distance
)
- 2012-01-12 16:29:55下载
- 积分：1
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KNN
K最邻近密度估计技术是一种分类方法，不是聚类方法。
不是最优方法，实践中比较流行。
通俗但不一定易懂的规则是：
1.计算待分类数据和不同类中每一个数据的距离（欧氏或马氏）。
2.选出最小的前K数据个距离，这里用到选择排序法。
3.对比这前K个距离，找出K个数据中包含最多的是那个类的数据，即为待分类数据所在的类。(K nearest neighbor density estimation is a classification method, not a clustering method.
It is not the best method, but it is popular in practice.
Popular but not necessarily understandable rule is:
1. calculate the distance between the data to be classified and the data in each other (Euclidean or Markov).
2. select the minimum distance from the previous K data, where the choice sorting method is used.
3. compare the previous K distances to find out which K data contains the most data of that class, that is, the class to which the data to be classified is located.)
- 2020-10-23 14:37:22下载
- 积分：1
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PV模型
说明： 光伏特性曲线m文件，运行可用。在不同温度和光照条件都有。(Photovoltaic characteristic curve m file, available for operation. In different temperature and light conditions.)
- 2019-10-18 21:37:43下载
- 积分：1
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MCQPSKrun
本程序仿真在给定系统延时下的QPSK系统误码率，其中没有使用成形滤波器，考虑了相位同步和符号同步，对工程人员很有参考价值(QPSK err rate simulation)
- 2013-05-04 21:36:23下载
- 积分：1
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YALMIP-master
yalmip最新文档，可在matlab中优化使用(Yalmip latest document, can be used in MATLAB optimization)
- 2020-07-09 21:58:55下载
- 积分：1
