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Use of SVM-based ensemble feature selection method for gene expression data analysis

Author

Listed:
  • Zhang Shizhi

    (School of Chemistry and Chemical Engineering, Qinghai Minzu University, Xining, 810007, P.R. China)

  • Zhang Mingjin

    (School of Chemistry and Chemical Engineering, Qinghai Normal University, Xining, 810016, P.R. China)

Abstract

Gene selection is one of the key steps for gene expression data analysis. An SVM-based ensemble feature selection method is proposed in this paper. Firstly, the method builds many subsets by using Monte Carlo sampling. Secondly, ranking all the features on each of the subsets and integrating them to obtain a final ranking list. Finally, the optimum feature set is determined by a backward feature elimination strategy. This method is applied to the analysis of 4 public datasets: the Leukemia, Prostate, Colorectal, and SMK_CAN, resulting 7, 10, 13, and 32 features. The AUC obtained from independent test sets are 0.9867, 0.9796, 0.9571, and 0.9575, respectively. These results indicate that the features selected by the proposed method can improve sample classification accuracy, and thus be effective for gene selection from gene expression data.

Suggested Citation

  • Zhang Shizhi & Zhang Mingjin, 2022. "Use of SVM-based ensemble feature selection method for gene expression data analysis," Statistical Applications in Genetics and Molecular Biology, De Gruyter, vol. 21(1), pages 1-10, January.
    • Handle: RePEc:bpj:sagmbi:v:21:y:2022:i:1:p:10:n:2
    DOI: 10.1515/sagmb-2022-0002
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