Matan Orbach is a Research Staff Member at IBM Research AI. Since joining IBM in 2014, he has worked on a diverse set of NLP tasks, including, among others, key-point analysis, targeted sentiment analysis and multilingual stance detection. Before that, Matan led a team within Project Debater, an IBM Grand Challenge, which focused on rebuttal generation through the use of principled arguments. Prior to joining IBM, Matan received his M.Sc. from the faculty of Electrical Engineering at the Technion, where his research focused on graph-based semi-supervised learning.