CONF Hu_MMHEALTHWORKSHOP@ACMMULTIMEDIACONFERENCE_2017/IDIAP Elderly People Living Alone: Detecting Home Visits with Ambient and Wearable Sensing Hu, Rui Pham, Hieu Buluschek, Philipp Gatica-Perez, Daniel EXTERNAL http://publications.idiap.ch/attachments/papers/2017/Hu_MMHEALTHWORKSHOP@ACMMULTIMEDIACONFERENCE_2017.pdf PUBLIC In Proceedings of MMHealth 2017