This workshop will provide a common platform for discussion of challenging issues and potential techniques in this emerging field of data mining for decision support. It will also serve as a critical and essential forum for integrating various research challenges in this domain, promote collaboration among researchers from academia and industry to enhance the state-of-art, and help define a clear path for future research in this emerging area. The workshop invites researchers and practitioners to submit original work on methodologies, models, algorithms, systems, tools, applications and case studies of DMDMS. Most importantly, the workshop will be a forum to discuss how to utilize advances from multiple disciplines for building DMDMS that can intelligently merge human knowledge and expertise with formal models to make better decisions.