Communications for Statistical Applications and Methods

The Korean Statistical Society (한국통계학회)
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Applying a modified AUC to gene ranking

  • Yu, Wenbao (Department of Statistics, Chonnam National University) ;
  • Chang, Yuan-Chin Ivan (Institute of Statistical Science, Academia Sinica) ;
  • Park, Eunsik (Department of Statistics, Chonnam National University)
  • Received : 2018.02.22
  • Accepted : 2018.04.16
  • Published : 2018.05.31
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Abstract

High-throughput technologies enable the simultaneous evaluation of thousands of genes that could discriminate different subclasses of complex diseases. Ranking genes according to differential expression is an important screening step for follow-up analysis. Many statistical measures have been proposed for this purpose. A good ranked list should provide a stable rank (at least for top-ranked gene), and the top ranked genes should have a high power in differentiating different disease status. However, there is a lack of emphasis in the literature on ranking genes based on these two criteria simultaneously. To achieve the above two criteria simultaneously, we proposed to apply a previously reported metric, the modified area under the receiver operating characteristic cure, to gene ranking. The proposed ranking method is found to be promising in leading to a stable ranking list and good prediction performances of top ranked genes. The findings are illustrated through studies on both synthesized data and real microarray gene expression data. The proposed method is recommended for ranking genes or other biomarkers for high-dimensional omics studies.

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References

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