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Feature selection in biomedical signal classification process and current software implementations

Feature selection is an important step in everyday data mining. Its aim is to reduce the number of potentially irrelevant expert features describing a dataset to a number of important ones. Unlike feature reduction and transformation techniques, feature selection keeps a subset of the original features, thus maintaining the interpretability of the final models, which is especially important for researchers and medical professionals in the field of biomedicine. The aim of this chapter is to provide an in-depth overview of the various feature selection approaches that are applicable to biomedical signal classification, including: filters, wrappers, embedded methods, and various hybrid approaches. In addition, the recently developed methods based on sequential feature selection and data filtering from streams are considered. Feature selection implementations in current software solutions are described. A comparison of feature selection with deep learning approach is provided. The feature selection approach used in our own web-based biomedical signal analysis platform called MULTISAB (multiple time series analysis in biomedicine) is presented.

feature selection, biomedical signal classification, biomedical software, deep learning, deep neural network

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