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sift-forensic-master-(1)
This code can be used to detect copy move image forgery based on SIFT algorithm
- 2015-04-19 20:38:23下载
- 积分:1
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FIRTest
Finite Impluse Response
- 2010-11-19 23:24:54下载
- 积分:1
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policyi
Policy iteration algorithm of Howard applied to linear regulator
Also known as Newton s method
- 2010-03-04 16:56:54下载
- 积分:1
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NewK-means-clustering-algorithm
说明: 珍藏版,可实现,新K均值聚类算法,分为如下几个步骤:
一、初始化聚类中心
1、根据具体问题,凭经验从样本集中选出C个比较合适的样本作为初始聚类中心。
2、用前C个样本作为初始聚类中心。
3、将全部样本随机地分成C类,计算每类的样本均值,将样本均值作为初始聚类中心。
二、初始聚类
1、按就近原则将样本归入各聚类中心所代表的类中。
2、取一样本,将其归入与其最近的聚类中心的那一类中,重新计算样本均值,更新聚类中心。然后取下一样本,重复操作,直至所有样本归入相应类中。
三、判断聚类是否合理
采用误差平方和准则函数判断聚类是否合理,不合理则修改分类。循环进行判断、修改直至达到算法终止条件。(NewK-means clustering algorithm ,Divided into the following several steps:
A, initialize clustering center
1, according to the specific problems, from samples with experience selected C a more appropriate focus the sample as the initial clustering center.
2, with former C a sample as the initial clustering center.
3, will all samples randomly divided into C, calculate the sample mean, each the sample mean as the initial clustering center.
Second, initial clustering
1, according to the sample into the nearest principle clustering center represents the class.
2, as this, take the its recent as clustering center of that category, recount the sample mean, update clustering center. And then taking off, as this, repeated operation until all samples into the corresponding class.
Three, judge clustering is reasonable
Adopt error squares principles function cluster analysis.after clustering whether reasonable, no reasonable criterion revisio)
- 2011-04-06 20:45:56下载
- 积分:1
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sumulink
this is a simulink model of modern control obserability
- 2012-06-02 03:06:33下载
- 积分:1
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lda-0.2-matlab
matlab判别分析,基本思想是将高维的模式样本投影到最佳鉴别矢量空间,以达到抽取分类信息和压缩特征空间维数的效果,投影后保证模式样本在新的子空间有最大的类间距离和最小的类内距离,即模式在该空间中有最佳的可分离性。(matlab discriminant analysis, the basic idea is to sample the high-dimensional pattern projected onto the optimal discriminant vector space, in order to achieve the classification of information extraction and compression feature space dimension effect, the projected sample assurance model in the new subspace has the largest class room the intra-class distance and the minimum distance, i.e., have the best separability pattern in the space.)
- 2015-04-21 16:26:15下载
- 积分:1
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correlation
to find the correlation of the image
- 2009-02-09 02:50:22下载
- 积分:1
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psoeld
改进的粒子群算法,计算电力系统经济调度问题(Improved particle swarm algorithm, computational power system economic dispatch
)
- 2021-04-29 10:28:43下载
- 积分:1
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fdtd-cell-
This document explain the fdtd grid of an electromagnetic problem.At this document three kind of antenna are investigated
- 2013-02-09 01:53:46下载
- 积分:1
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draw_roc
在matlab,支持向量机,画roc ,AUPR曲线(roc,AUPR curve)
- 2011-12-21 18:38:54下载
- 积分:1