Hybrid Method Based on Information Gain and Support Vector Machine for Gene Selection in Cancer Classification
- Author:
Gao LINGYUN
1
;
Ye MINGQUAN
;
Lu XIAOJIE
;
Huang DAOBIN
Author Information
1. School of Medical Information
- Keywords:
Gene selection;
Cancer classification;
Information gain;
Support vector machine;
Small sample size with high dimension
- From:
Genomics, Proteomics & Bioinformatics
2017;15(6):389-395
- CountryChina
- Language:Chinese
-
Abstract:
It remains a great challenge to achieve sufficient cancer classification accuracy with theentire set of genes, due to the high dimensions, small sample size, and big noise of gene expressiondata. We thus proposed a hybrid gene selection method, Information Gain-Support Vector Machine(IG-SVM) in this study. IG was initially employed to filter irrelevant and redundant genes. Then,further removal of redundant genes was performed using SVM to eliminate the noise in the datasetsmore effectively. Finally, the informative genes selected by IG-SVM served as the input for theLIBSVM classifier. Compared to other related algorithms, IG-SVM showed the highest classificationaccuracy and superior performance as evaluated using five cancer gene expression datasetsbased on a few selected genes. As an example, IG-SVM achieved a classification accuracy of90.32% for colon cancer, which is difficult to be accurately classified, only based on three genesincluding CSRP1, MYL9, and GUCA2B.
