The International Workshop on Social Computing (IWSC 2017) - Spatial Social Behavior Analytics on the Web Perth, Australia ♦ 4 April, 2017 ♦ Co-Organized with WWW2017 Talk Title: User Stance Prediction via Online Behavior Mining Nowadays social media, such as Twitter and all kinds of online forums, becomes a platform where people can express their opinions implicitly or explicitly. For example, in