A1 Refereed original research article in a scientific journal

Stable Iterative Variable Selection




AuthorsMahmoudian Mehrad, Venäläinen Mikko S, Klén Riku, Elo Laura L

PublisherOxford University Press

Publication year2021

JournalBioinformatics

Journal name in sourceBioinformatics (Oxford, England)

Journal acronymBioinformatics

ISSN1367-4803

eISSN1367-4811

DOIhttps://doi.org/10.1093/bioinformatics/btab501

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/66616134


Abstract

Motivation: The emergence of datasets with tens of thousands of features, such as high-throughput omics biomedical data, highlights the importance of reducing the feature space into a distilled subset that can truly capture the signal for research and industry by aiding in finding more effective biomarkers for the question in hand. A good feature set also facilitates building robust predictive models with improved interpretability and convergence of the applied method due to the smaller feature space.

Results: Here, we present a robust feature selection method named Stable Iterative Variable Selection (SIVS) and assess its performance over both omics and clinical data types. As a performance assessment metric, we compared the number and goodness of the selected feature using SIVS to those selected by Least Absolute Shrinkage and Selection Operator regression. The results suggested that the feature space selected by SIVS was, on average, 41% smaller, without having a negative effect on the model performance. A similar result was observed for comparison with Boruta and caret RFE.

Availability and implementation: The method is implemented as an R package under GNU General Public License v3.0 and is accessible via Comprehensive R Archive Network (CRAN) via https://cran.r-project.org/package¼sivs.

Contact: laura.elo@utu.fi

Supplementary information: Supplementary data are available at Bioinformatics online.


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Last updated on 2024-26-11 at 14:11