Towards Personalized Recommendations in an IoT-Driven Tour Guide Platform. - Margianna Arvaniti-Bofili; Stelios Gkouskos; Konstantinos Kalampokis; Gerasimos Papaioannou; Georgios I. Gogolos; Ilias Chaldeakis; Konstantinos Petridis; Kostas Magoutis (SummerSOC, 2020)