"Stupid robot, I want to speak to a human!" User Frustration Detection in Task-Oriented Dialog Systems. - Mireia Hernandez Caralt; Ivan Sekulic; Filip Carevic; Nghia Khau; Diana Nicoleta Popa; Bruna Guedes; Victor Guimarães 003; Zeyu Yang; André Ferreira Manso; Meghana M. Reddy; Paolo Rosso; Roland Mathis (COLING (Industry), 2025)