An Unsupervised Learning Approach for Detecting Relapses from Spontaneous Speech in Patients with Psychosis. - Christos Garoufis; Athanasia Zlatintsi; Panagiotis Paraskevas Filntisis; Niki Efthymiou; Emmanouil Kalisperakis; Vasiliki Garyfalli; Thomas Karantinos; L. Mantonakis; Nikolaos Smyrnis; Petros Maragos (BHI, 2021)