| 一种改进的模糊核聚类算法 |
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| 引用本文： | 薛耿剑,王毅,赵海涛,魏梦琦,郝重阳.一种改进的模糊核聚类算法[J].中国医学影像技术,2005,21(10):1609-1611. |
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| 作者姓名： | 薛耿剑 王毅 赵海涛 魏梦琦 郝重阳 |
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| 作者单位： | 1. 西北工业大学生物医学工程研究所,陕西,西安,710072
2. 第四军医大学第一附属医院,陕西,西安,710032 |
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| 基金项目： | 高等学校博士学科点专项科研项目，国家重点实验室基金 |
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| 摘 要： | 针对传统模糊核聚类算法当数据类差别很大时,小数据类被误分或被大数据类吞并的缺陷,提出了一种改进的模糊核聚类算法;通过定义一个新的目标函数,为每一个类分配了一个动态权值,可改善聚类效果.文中给出的MRI图像分割算例表明了该算法的有效性.
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| 关 键 词： | 模糊C均值 核方法 目标函数 |
| 文章编号： | 1003-3289（2005）10-1609-03 |
| 收稿时间： | 2005-04-21 |
| 修稿时间： | 2005-09-02 |
Improved fuzzy kernel clustering algorithm |
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| XUE Geng-jian,WANG Yi,ZHAO Hai-tao,WEI Meng-qi and HAO Chong-yang.Improved fuzzy kernel clustering algorithm[J].Chinese Journal of Medical Imaging Technology,2005,21(10):1609-1611. |
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| Authors: | XUE Geng-jian WANG Yi ZHAO Hai-tao WEI Meng-qi and HAO Chong-yang |
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| Affiliation: | Institute of Biomedical Engineering of Northwestern Polytechnical University, Xi'an 710072, China;Institute of Biomedical Engineering of Northwestern Polytechnical University, Xi'an 710072, China;Fisrt Affiliated Hospital of The Fourth Military Medical University, Xi'an 710032, China;Fisrt Affiliated Hospital of The Fourth Military Medical University, Xi'an 710032, China;Institute of Biomedical Engineering of Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | When the difference of the date size is large. The small class may be misclassified or may be merged into big class in fuzzy kernel clustering algorithm. An improved fuzzy kernel clustering algorithm is proposed in this paper. A new objective function is introduced and an additional weighting factor is assigned to each class. Based on this improvement the algorithm gets better performance. The example of MRI image segmentation in the paper indicates its effectiveness. |
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| Keywords: | Fuzzy C-meanst Kernel-based methodt Objective function |
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