ICKD is an annual International Conference on Knowledge Discovery sponsored by IACSIT. 2012 International Conference on Knowledge Discovery (ICKD 2012) will be held in Bali Island, Indonesia during May 26-27, 2012. The aim objective of ICKD 2012 is to provide a platform for researchers, engineers, academicians as well as industrial professionals from all over the world to present their research results and development activities in Knowledge Discovery. This conference provides opportunities for the delegates to exchange new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration.