改进的一对一支持向量机多分类算法
Improved multi-classification algorithm of one-against-one SVM
查看参考文献15篇
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文摘
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支持向量机的一对一多分类算法具有良好的性能,但该算法在分类时存在不可分区域,影响了该方法的应用。因此,提出一种一对一与基于紧密度判决相结合的多分类方法,使用一对一算法分类,采用基于紧密度决策解决不可分区,依据样本到类中心之间的距离和基于kNN(k nearest neighbor)的样本分布情况结合的方式构建判别函数来确定类别归属。使用UCI(university of California Irvine)数据集做测试,测试结果表明,该算法能有效地解决不可分区域问题,而且表现出比其它算法更好的性能。 |
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其他语种文摘
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Multi-class classification algorithm of one-against-one SVM show good performance,but the algorithm exists an unclassifiable region,which affects the application effect of the algorithm.Hence,a multi-classification algorithm of integration of one-against-one and affinity decision is presented.Firstly,the one-against-one multi-class classification algorithm is used to classify samples,and then the affinity decision is used to solve samples in the unclassifiable region and to determine categories of samples,which using the approach of distance between the sample and centers of classes and sample distribution based on kNN(k nearest neighbor) to create decision function.By adopting UCI data sets for testing,the results show that the algorithm can solve unclassifiable region issues,and show better performance than other algorithms. |
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来源
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计算机工程与设计
,2012,33(5):1837-1841 【扩展库】
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关键词
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k近邻
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一对一支持向量机
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多分类
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不可分区
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紧密度
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地址
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1.
中国科学院沈阳自动化研究所, 辽宁, 沈阳, 110016
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北京联合大学管理学院, 北京, 100101
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-7024 |
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学科
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自动化技术、计算机技术 |
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基金
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国家863计划
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文献收藏号
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CSCD:4535957
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