ARTICLE Sanchez-Cortes_JMUI_2012/IDIAP Emergent leaders through looking and speaking: from audio-visual data to multimodal recognition Sanchez-Cortes, Dairazalia Aran, Oya Jayagopi, Dinesh Babu Schmid Mast, Marianne Gatica-Perez, Daniel Emergent leadership multimodal cues Nonverbal behavior small group interactions EXTERNAL http://publications.idiap.ch/attachments/papers/2012/Sanchez-Cortes_JMUI_2012.pdf PUBLIC Journal on Multimodal User Interfaces 2012