We provide an overview of problems related to variable selection (also known as feature selection) techniques in decision-making problems based on machine learning with a particular emphasis on recent knowledge. Several popular methods are reviewed and assigned to a taxonomical context. Issues...

Purpose: The market for goods and services is a continually changing environment influenced by many internal and external factors. The majority of economies in the World were deeply hit by the coronavirus epidemic (COVID-19) in the first half of 2020. This paper aims to contribute to the...