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基于LSA降维的KNN文本分类算法
An algorithm of KNN text categorization based on LSA reduce dimensionality
【摘要】 针对文本自动分类问题,提出了一种基于LSA降维的KNN改进算法.通过对文本特征向量运用LSA理论进行降维处理,可以有效提高KNN算法的运行效率,提高分类精度.实验证明,改进的KNN算法具有很好的性能.
【Abstract】 Aimed at the problem of document automatic classification,an algorithm is proposed based on LSA and KNN.It advances the KNN algorithm’s efficiency and classifier’s precision by using LSA to reduce dimensionality of text feature matrix.The experiment result shows that it has good performance.
【关键词】 潜在语义分析;
KNN;
文本分类;
降维;
【Key words】 latent semantic analysis; KNN; text categorization; reduce dimensionality;
【Key words】 latent semantic analysis; KNN; text categorization; reduce dimensionality;
【基金】 国家“十五”科技攻关计划项目(2004BA721A05)
- 【文献出处】 东北师大学报(自然科学版) ,Journal of Northeast Normal University(Natural Science Edition) , 编辑部邮箱 ,2007年02期
- 【分类号】TP391.1
- 【被引频次】11
- 【下载频次】468