ARTICLE Muralidhar_IMWUT_2018/IDIAP A Tale of Two Interactions: Inferring Performance in Hospitality Encounters from Cross-Situation Social Sensing Muralidhar, Skanda Schmid Mast, Marianne Gatica-Perez, Daniel EXTERNAL http://publications.idiap.ch/attachments/papers/2018/Muralidhar_IMWUT_2018.pdf PUBLIC Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 2 129 2018