Range-Free Positioning in NB-IoT Networks by Machine Learning: Beyond WkNN - De Nardis, Luca; Savelli, Marco; Caso, Giuseppe; Ferretti, Federico; Tonelli, Lorenzo; Bouzar, Nadir; Brunstrom, Anna; Alay, Ozgu; Neri, Marco; Bokour, Fouzia Elbahhar; Di Benedetto, Maria-Gabriella (IEEE JOURNAL OF INDOOR AND SEAMLESS POSITIONING AND NAVIGATION, 2025)