Developing Measures of Cognitive Impairment in the Real World from Consumer-Grade Multimodal Sensor Streams. - Richard Chen 001; Filip Jankovic; Nikki Marinsek; Luca Foschini 002; Lampros Kourtis; Alessio Signorini; Melissa Pugh; Jie Shen; Roy Yaari; Vera Maljkovic; Marc Sunga; Han Hee Song; et al. (KDD, 2019)