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MyKmeans
实现聚类K均值算法: K均值算法:给定类的个数K,将n个对象分到K个类中去,使得类内对象之间的相似性最大,而类之间的相似性最小。 缺点:产生类的大小相差不会很大,对于脏数据很敏感。 改进的算法:k—medoids 方法。这儿选取一个对象叫做mediod来代替上面的中心 的作用,这样的一个medoid就标识了这个类。步骤: 1,任意选取K个对象作为medoids(O1,O2,…Oi…Ok)。 以下是循环的: 2,将余下的对象分到各个类中去(根据与medoid最相近的原则); 3,对于每个类(Oi)中,顺序选取一个Or,计算用Or代替Oi后的消耗—E(Or)。选择E最小的那个Or来代替Oi。这样K个medoids就改变了,下面就再转到2。 4,这样循环直到K个medoids固定下来。 这种算法对于脏数据和异常数据不敏感,但计算量显然要比K均值要大,一般只适合小数据量。(achieving K-mean clustering algorithms : K-means algorithm : given the number of Class K, n will be assigned to target K to 000 category, making target category of the similarity between the largest category of the similarity between the smallest. Disadvantages : class size have no great difference for dirty data is very sensitive. Improved algorithms : k-medoids methods. Here a selection of objects called mediod to replace the center of the above, the logo on a medoid this category. Steps : 1, arbitrary selection of objects as K medoids (O1, O2, Ok ... ... Oi). Following is a cycle : 2, the remaining targets assigned to each category (in accordance with the closest medoid principle); 3, for each category (Oi), the order of selection of a Or, calculated Oi Or replace the consumption-E (Or))
- 2005-07-26 01:32:58下载
- 积分:1
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CBIR
Code for Content based image retrieval
- 2014-09-06 19:29:46下载
- 积分:1
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convolution_code
移动通信系统中,卷积码的matlab仿真程序(Convolutional code matlab simulation program)
- 2013-11-01 15:17:24下载
- 积分:1
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PQ_Control
三相逆变器恒功率并网控制的仿真,包括PI等参数(PQ control)
- 2017-02-16 10:53:40下载
- 积分:1
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GA-PSO算法 2.0版本
基于遗传算法与粒子群算法的相机标定程序,值得借鉴(The camera calibration program based on genetic algorithm and particle swarm optimization is worthy of reference)
- 2020-07-04 01:20:01下载
- 积分:1
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MatlabTraderGUI-V1.1-by-faruto
MATLAB行情软件MatlabTraderGUI V1.0(Beta版本)
(MatlabTraderGUI V1.0 by faruto)
- 2014-11-09 15:34:22下载
- 积分:1
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svm(matlab)
一种新的函数拟合方法,在某些问题的近似程度上甚至优于径向基插值和Kriging插值方法(A new function fitting method, even better than the approximate extent of some of the issues radial basis interpolation and Kriging interpolation method)
- 2012-12-02 23:07:31下载
- 积分:1
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niudongxiashan
说明: 利用matlab实现牛顿下山法,便于数值分析计算(matlab niudunxiashan)
- 2011-04-04 21:41:04下载
- 积分:1
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fresnel
基于菲涅尔域的双随机相位编码图像加密方案,利用角谱传播法实现(Based on double random phase encoding Fresnel domain image encryption scheme to achieve the use of angular spectrum propagation method)
- 2020-12-08 17:49:20下载
- 积分:1
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CH4OP
基于MATLAB仿真的智能BP算法集合,用于先进控制理论的研究,主要是控制器方面的介绍(BP algorithm based on MATLAB simulation smart collection for the study of advanced control theory, mainly the introduction of the controller)
- 2013-05-14 06:50:07下载
- 积分:1