Behavioral analytics in social and ubiquitous environments 6th International Workshop on Mining Ubiquitous and Social Environments, MUSE 2015, Porto, Portugal, September 7, 2015; 6th International Workshop on Modeling Social Media, MSM 2015, Florence, Italy, May 19, 2015; 7th International Workshop on Modeling Social Media, MSM 2016, Montreal, QC, Canada, April 12, 2016 : revised selected papers - Atzmueller, Martin; Chin, Alvin; Lemmerich, Florian; Trattner, Christoph (Lecture notes in computer science, 2019)