Matrix Completion with Variational Graph Autoencoders: Application in Hyperlocal Air Quality Inference. - Tien Huu Do; Duc Minh Nguyen; Evaggelia Tsiligianni; Angel Lopez Aguirre; Valerio Panzica La Manna; Frank J. Pasveer; Wilfried Philips; Nikos Deligiannis (ICASSP, 2019)