| 一种改进的基于距离的孤立点挖掘算法的研究 |
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| 引用本文： | 谢文阁,王海虹. 一种改进的基于距离的孤立点挖掘算法的研究[J]. 渤海大学学报(自然科学版), 2011, 32(2): 157-161 |
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| 作者姓名： | 谢文阁 王海虹 |
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| 作者单位： | 辽宁工业大学电子与信息工程学院,辽宁锦州,121001 |
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| 基金项目： | 辽宁省教育厅科学技术研究项目 |
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| 摘 要： | 对经典的基于距离的孤立点挖掘算法进行了改进,引入关键属性,即减少了挖掘的数据量,从而提高了孤立点挖掘的效率,并且改进常用距离度量,用改进的加权曼式距离进行计算,降低了数据分布不均给检测结果带来的影响,同时改进后的挖掘算法在不影响挖掘结果的情况下取消了对参数设置的要求,给出了孤立点孤立的程度.
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| 关 键 词： | 数据挖掘 孤立点 孤立点检测 关键属性 |
Research on improved algorithm for distance-based outlier digging |
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| XIE Wen-ge,WANG Hai-hong. Research on improved algorithm for distance-based outlier digging[J]. Journal of Bohai University:Natural Science Editio, 2011, 32(2): 157-161 |
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| Authors: | XIE Wen-ge WANG Hai-hong |
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| Affiliation: | XIE Wen-ge,WANG Hai-hong(College and Electronic Information and Engineering,Liaoning University of Technology,Jinzhou 121000,China) |
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| Abstract: | By introducing key attribute,the reduction of the data to be dug so as to raise the outlier's digging efficiency,improvement is made on algorithm for distance-based outlier digging.By using the improved weighted Man-type calculation of distance,detection results tend to be more accurate,and the improved algorithm requires no settings to the parameter without affecting the digging effect.The extent,to which an outlier is isolated,is also provided. |
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| Keywords: | data digging outlier detection of outlier key attribute |
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