The development of complex software systems requires the collaboration and mutual understanding of stakeholders from various backgrounds, which is usually facilitated by joint design of complex graphical models. To support this collaboration, we introduce the concept of a so-called "Augmented Interaction Room" that is equipped with large interactive wall displays, each dedicated to a particular modeling perspective. These models evolve significantly over the project life-cycle as uncertainties are resolved and design decisions are made. Our focus in this paper is to help stakeholders obtain a clearer view of the models' evolution and past design rationales, without incurring significant cognitive effort for navigating a potentially very long and detailed model revision history. For this purpose, we describe mechanisms for storing the history of the continuously evolving models, and methods for temporal navigation that semi-automatically identify particularly relevant past model versions.
Sketching is an important activity in software development projects and has many advantages over strict formal languages, especially in cross-functional teams with different technical background. Sketches are used to develop all kinds of diagrams, providing a different view on the application and the underlying business logic. Several tools have been developed in recent years to support sketching activities, especially in the area of UI prototype sketching. Sketches are used to quickly develop a first impression of future UIs, helping designers, engineers, and domain experts to gain a common understanding of layout and dialog flows. Unfortunately, UI sketching tools focus on a single application aspect -the UIand do not take business processes, technical data structures, and their relationships into account. We demonstrate how UI, business process, and technical diagram sketches can be interconnected in an augmented team room.
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