The YouTube Social Network. - Mirjam Wattenhofer; Roger Wattenhofer; Zack Zhu (ICWSM, 2012)

Online detection of freezing of gait with smartphones and machine learning techniques. - Sinziana Mazilu; Michael Hardegger; Zack Zhu; Daniel Roggen; Gerhard Tröster; Meir Plotnik; Jeffrey M. Hausdorff (PervasiveHealth, 2012)

Prior knowledge of human activities from social data. - Zack Zhu; Ulf Blanke; Alberto Calatroni; Gerhard Tröster (ISWC, 2013)

Human activity recognition using social media data. - Zack Zhu; Ulf Blanke; Alberto Calatroni; Gerhard Tröster (MUM, 2013)

Fusing On-Body Sensing with Local and Temporal Cues for Daily Activity Recognition. - Zack Zhu; Ulf Blanke; Alberto Calatroni; Oliver Brdiczka; Gerhard Tröster (BODYNETS, 2014)

Inferring travel purpose from crowd-augmented human mobility data. - Zack Zhu; Ulf Blanke; Gerhard Tröster (Urb-IoT, 2014)

Informative Yet Unrevealing: Semantic Obfuscation for Location Based Services. - Jing Yang 022; Zack Zhu; Julia Seiter 001; Gerhard Tröster (GeoPrivacy@SIGSPATIAL, 2015)

Learning functional compositions of urban spaces with crowd-augmented travel survey data. - Zack Zhu; Jing Yang 022; Chen Zhong; Julia Seiter 001; Gerhard Tröster (SIGSPATIAL/GIS, 2015)

Recognizing composite daily activities from crowd-labelled social media data. - Zack Zhu; Ulf Blanke; Gerhard Tröster (Pervasive Mob. Comput., 2016)

Naturalistic Recognition of Activities and Mood Using Wearable Electronics. - Zack Zhu; Héctor F. Satizábal; Ulf Blanke; Andrés Pérez-Uribe; Gerhard Tröster (IEEE Trans. Affect. Comput., 2016)