The building sector is one of the world's top users of primary energy. According to the International Energy Agency (IEA), buildings account for around 21\% of total final energy consumption in EU member nations. As a result, the building sector is currently one of the most strategic targets for reducing total energy consumption and improving energy efficiency in order to meet stringent decarbonization objectives. In recent years, the development of Internet of Things (IoT) and Information and Communication Technologies (ICT) has made it possible to collect huge amount of building related-data de facto increasing valuable knowledge resources to guide experts and decision-makers in a multitude of energy management tasks.