Dynamic Data Driven Applications Systems (DDDAS) is a new paradigm whereby the computation and instrumentation aspects of an application system are dynamically integrated in a feed-back control loop, in the sense that instrumentation data can be dynamically incorporated into the executing model of the application, and in reverse the executing model can control the instrumentation. Such approaches have been shown that can enable more accurate and faster modeling and analysis of the characteristics and behaviors of a system and can exploit data in intelligent ways to convert them to new capabilities, including decision support systems with the accuracy of full scale modeling, efficient data collection, management, and data mining. The DDDAS concept - and the term - was proposed by Frederica Darema for the National Science Foundation (NSF) workshop in March 2000.

There are several affiliated annual meetings and conferences, including:

• DDDAS workshop at ICCS (since 2003)
• DyDESS conference and workshop at MIT organized by Sai Ravela and Adrian Sandu
• DDDAS special session at the ACC organized by Puneet Singla and Dennis Bernstein and Sai Ravela
• DDDAS Special Session Information Fusion