@incollection{Perifanis_IUPESM_2022,
year={2022},
isbn={XXX-XXX-XX-XXXX-X},
booktitle={IUPESM World Congress on Medical Physics and Biomedical Engineering, June 12-17, 2022, Singapore},
volume={XX},
series={IFMBE Proceedings},
editor={Lee, James and Leo, Hwa Liang},
doi={10.1007/XXX-XXX-XX-XXXX-X_XX},
title={Predicting Early Dropouts of an Active and Healthy Ageing App},
publisher={Springer Singapore},
keywords={Machine Learning; Digital Health; Adherence; Healthy Ageing},
author={Perifanis, Vasileios and Michailidi, Ioanna and Stamatelatos, Giorgos and Drosatos, George and Efraimidis, Pavlos S.},
abstract={In this work, we present a machine learning approach for predicting early dropouts of an active and healthy ageing app. The presented algorithms have been submitted to the IFMBE Scientific Challenge 2022 (wchallenge2022.lst.tfo.upm.es), part of IUPESM WC 2022. We have processed the given database and generated seven datasets. We used pre-processing techniques to construct classification models that predict the adherence of users using dynamic and static features. We submitted 11 official runs and our results show that machine learning algorithms can provide high-quality adherence predictions. Based on the results, the dynamic features positively influence a model's classification performance. Due to the imbalanced nature of the dataset, we employed oversampling methods such as SMOTE and ADASYN to improve the classification performance. The oversampling approaches led to a remarkable improvement of 10\%. Our methods won the first place in the IFMBE Scientific Challenge 2022.},
pages={1-15},
language={English}
}