详细信息
基于最优正交质心特征选取的DNA微阵列数据分析 ( EI收录)
DNA Microarray Data Analysis Based on Optimal Orthogonal Centroid Feature Selection
文献类型:期刊文献
中文题名:基于最优正交质心特征选取的DNA微阵列数据分析
英文题名:DNA Microarray Data Analysis Based on Optimal Orthogonal Centroid Feature Selection
作者:钱夕元[1];倪中新[1];邵志清[2]
机构:[1]华东理工大学理学院,上海200237;[2]华东理工大学信息科学与工程学院
年份:2007
卷号:33
期号:2
起止页码:233
中文期刊名:华东理工大学学报(自然科学版)
外文期刊名:Journal of East China University of Science and Technology
收录:CSTPCD;;EI(收录号:20072210628433);Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:国家自然科学基金(60373075)
语种:中文
中文关键词:最优正交质心;特征选取;特征萃取;DNA微阵列;支持向量机
外文关键词:optimal othogonal centroid; feature selection; feature extraction; DNA mlcroarray;support vector machine
摘要:微阵列数据具有样本小、维度高的特点,给数据分析带来了困难。因此,在生物信息学的研究和应用中,从微阵列数据里挑选主基因(特征选取)是十分重要和有意义的。本文采用基于最优正交质心特征选取算法(OCFS)来挑选主基因,并与基于信噪比的主基因挑选法和基于遗传算法的主基因挑选法进行了对比。利用挑选出的主基因,采用支持向量机(SVM)对数据样本进行了分类研究。通过实验,在经典的白血病数据集上,对于34个样本的测试集,达到了33/34的分类准确率,表明了本方法的适用性。
With the development of DNA microarray technology, thousands of gene expressions can be observed simultaneously. Microarray data has the feature of high dimensions and small samples, which brings difficulty to the analysis. It is important and meaningful to select or discover informative genes from mlcroarray data. This paper employs an optimal orthogonal centroid feature selection algorithm (OCFS) to select the informative genes and compares it with gene selection method based on signal noise ratio and gene selection method based on genetic algorithm. Finally, the support vector machine (SVM) is used to classify the data set. This method is applied to a classic microarray data set (leukemia data) and achieved 33/34 classification accuracy on the test data set with 34 samples.
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