KST international conference has been established with the aim in mind that a sustainable community will be achieved through continuous studies and share resources. The conference will be hold annually in Burapha University which located in the Eastern part of Thailand. It provides a central forum for experts and developers to promote, share, and discuss various issues and developments in the broad field of Computational Intelligence, Intelligent Application, and Emergent Intelligent Technologies. KST international conference will provide an opportunity for young researchers to demonstrate their talent and interesting research ideas. The conference will benefit people who are actively involved in research related to computational intelligence and its applications in Thailand. Selected papers will be published in ECTI-Transaction on Computer and Information Technology. Accepted papers will be published in the KST-2012 Conference Proceedings. Accepted and presented papers will be published in IEEE Xplore® (http://ieeexplore.ieee.org). Selected papers will be proposed for further extension before publishing in ECTI-Transaction on Computer and Information Technology (ECTI-CIT) (http://www.ecti-thailand.org).