The IWK2010 Workshops: DERIS2010 and EMDT2010. Proceedings of the IWK2010 Workshops: International Workshop on Design, Evaluation and Refinement of Intelligent Systems (DERIS2010) and the First International Workshop on Evolution Support for Model-Based Development and Testing (EMDT2010). Edited by Martin Atzmueller, Rainer Knauf, Stephan Bode, Qurat-Ul-Ann Farooq and Matthias Riebisch. Vol. 646. : RWTH Aachen University, 2010.