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基于聚类算法的配电变压器经济运行分析研究 被引量:5
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作者 陈俊 刘路 何艺 《广西电力》 2015年第1期6-10,共5页
为确切反映配电变压器经济运行效果,提出了一种基于聚类分群算法的配电变压器经济运行特征分析方法。通过从配电变压器负载数据中提取出平均负载率、波动负载率和趋势负载率等3个判别配电变压器经济运行的特征指标,采用改进KMedoids算... 为确切反映配电变压器经济运行效果,提出了一种基于聚类分群算法的配电变压器经济运行特征分析方法。通过从配电变压器负载数据中提取出平均负载率、波动负载率和趋势负载率等3个判别配电变压器经济运行的特征指标,采用改进KMedoids算法对其进行聚类分群处理,得出运行特征分析结果和运行方式优化建议。仿真实验证明,该方法有效,对配电变压器运行状态分类效果明显,为提高配电变压器运行效率以及配电网节能降损提供数据支持。 展开更多
关键词 配电变压器 聚类分群算法 负载率 经济运行分析
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Color image segmentation using mean shift and improved ant clustering 被引量:3
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作者 刘玲星 谭冠政 M.Sami Soliman 《Journal of Central South University》 SCIE EI CAS 2012年第4期1040-1048,共9页
To improve the segmentation quality and efficiency of color image,a novel approach which combines the advantages of the mean shift(MS) segmentation and improved ant clustering method is proposed.The regions which can ... To improve the segmentation quality and efficiency of color image,a novel approach which combines the advantages of the mean shift(MS) segmentation and improved ant clustering method is proposed.The regions which can preserve the discontinuity characteristics of an image are segmented by MS algorithm,and then they are represented by a graph in which every region is represented by a node.In order to solve the graph partition problem,an improved ant clustering algorithm,called similarity carrying ant model(SCAM-ant),is proposed,in which a new similarity calculation method is given.Using SCAM-ant,the maximum number of items that each ant can carry will increase,the clustering time will be effectively reduced,and globally optimized clustering can also be realized.Because the graph is not based on the pixels of original image but on the segmentation result of MS algorithm,the computational complexity is greatly reduced.Experiments show that the proposed method can realize color image segmentation efficiently,and compared with the conventional methods based on the image pixels,it improves the image segmentation quality and the anti-interference ability. 展开更多
关键词 color image segmentation improved ant clustering graph partition mean shift
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Research on Image Segmentation Algorithm based on Fuzzy C-mean Clustering
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作者 Xiaona SONG Zuobing WANG 《International Journal of Technology Management》 2015年第2期28-30,共3页
This paper presents a fuzzy C- means clustering image segmentation algorithm based on particle swarm optimization, the method utilizes the strong search ability of particle swarm clustering search center. Because the ... This paper presents a fuzzy C- means clustering image segmentation algorithm based on particle swarm optimization, the method utilizes the strong search ability of particle swarm clustering search center. Because the search clustering center has small amount of calculation according to density, so it can greatly improve the calculation speed of fuzzy C- means algorithm. The experimental results show that, this method can make the fuzzy clustering to obviously improve the speed, so it can achieve fast image segmentation. 展开更多
关键词 Image segmentation Fuzzy clustering Fuzzy c-means Spatial information ANTI-NOISE
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