Computational Collective Intelligence. Technologies and Applications 4th International Conference, ICCCI 2012, Ho Chi Minh City, Vietnam, November 28-30, 2012, Proceedings, Part II - Nguyen, Ngoc-Thanh; Hoang, Kiem; Jȩdrzejowicz, Piotr (Springer Berlin Heidelberg : Imprint: Springer, 2012)