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Title	Enabling Artificial Intelligent Virtual Sensors In An Iot Environment
ID_Doc	22978
Authors	Stavropoulos G.; Violos J.; Tsanakas S.; Leivadeas A.
Year	2023
Published	Sensors, 23, 3
DOI	http://dx.doi.org/10.3390/s23031328
Abstract	The demands for a large number of sensors increase as the proliferation of Internet of Things (IoT) and smart cities applications are continuing at a rapid pace. This also increases the cost of the infrastructure and the installation and maintenance overhead and creates significant performance degradation in the end-to-end communication, monitoring, and orchestration of the various connected devices. In order to solve the problem of increasing sensor demands, this paper suggests replacing physical sensors with machine learning (ML) models. These software-based artificial intelligence models are called virtual sensors. Extensive research and simulation comparisons between fourteen ML models provide a solid ground decision when it comes to the selection of the most accurate model to replace physical sensors, such as temperature and humidity sensors. In this problem at hand, the virtual and physical sensors are designed to be scattered in a smart home, while being connected and run on the same IoT platform. Thus, this paper also introduces a custom lightweight IoT platform that runs on a Raspberry Pi equipped with physical temperature and humidity sensors, which may also execute the virtual sensors. The evaluation results of the devised virtual sensors in a smart home scenario are promising and corroborate the applicability of the proposed methodology. © 2023 by the authors.
Author Keywords	Internet of Things; IoT platform; machine learning; Raspberry Pi; regression; smart homes; virtual sensors

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