Early Dementia Detection Using Multiple Spontaneous Speech Prompts: The PROCESS Challenge. - Fuxiang Tao; Bahman Mirheidari; Madhurananda Pahar; Sophie Young; Yao Xiao; Hend Elghazaly; Fritz Peters; Caitlin Illingworth; Dorota Braun; Ronan O'Malley; Simon Bell; Daniel Blackburn; et al. (ICASSP, 2025)