CONF Ba_ICMI2008_2008/IDIAP Predicting Two Facets of Social Verticality in Meetings from Five-Minute Time Slices and Nonverbal Cues Jayagopi, Dinesh Babu Ba, Silèye O. Odobez, Jean-Marc Gatica-Perez, Daniel EXTERNAL http://publications.idiap.ch/attachments/papers/2008/Ba_ICMI2008_2008.pdf PUBLIC Proceedings - ICMI 2008 2008