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脑fMRI特征重建的分层快速聚类方法 被引量:2

Time complexity optimization of clustering for fMRI feature reconstruction
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摘要 在对大脑fMRI感兴趣区域的分析中,利用特征选择所得到的筛选属性进行特征重建问题上,提出了分层快速聚类的分析方法,同已有K-均值聚类方法相比,在聚类有效性得到提高的前提下,总体降低了聚类的时间代价,并为后续的回归分析处理提供了精确保证。 To solve the problem of reconstructing features of functional Fast Clustering method(HFC) is proposed.Compared with the existing Region of Interest(fROI) from extracted voxels,Hierarchical K-means clustering methods,this method saves more than 62% running time on condition of ensuring regression ability.
出处 《计算机工程与应用》 CSCD 北大核心 2009年第32期193-196,208,共5页 Computer Engineering and Applications
基金 国家自然科学基金No.60775038 西北工业大学基础研究基金No.W018101 陕西省自然科学基金No.2007F45~~
关键词 功能核磁共振成像 感兴趣区域 层次聚类 K-均值聚类 特征重建 functional Magnetic Resonance Imaging(fMRl) Region of Interest(ROD hierarchical clustering K-means feature recon- struction
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