Journal
SAR AND QSAR IN ENVIRONMENTAL RESEARCH
Volume 30, Issue 5, Pages 313-345Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/1062936X.2019.1588160
Keywords
Feature selection; QSAR; dimensionality reduction; molecular activity prediction
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Funding
- Spanish Ministry of Science and Innovation [TIN2015-66108-P]
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The application of machine learning methods to the construction of quantitative structure-activity relationship models is a complex computational problem in which dimensionality reduction of the representation of the molecular structure plays a fundamental role in predicting a target activity. The feature selection pre-processing approach has been indicated to be effective in dimensionality reduction for building simpler and more understandable models. In this paper, a performance comparative study of 13 state-of-the-art feature selection filter methods is conducted. Structure-activity relationship models are constructed using three widely used classifiers and a diverse collection of datasets. The comparative study utilizes robust statistical tests to compare the algorithms. According to the experimental results, there are substantial differences in performance among the evaluated feature selection methods. The methods that exhibit the best performance are correlation-based feature selection, fast clustering-based feature selection and the set cover method.
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