Task Models and Diagrams for User Interface Design

th TAMODIA 2009 was the 8 International Workshop in the series looking at TAskMOdelsandDIAgramsforUserInterfaceDevelopment. Overtheyearsthe submissionshavelookedatavarietyofperspectivesformodeling andannotating the user interface development process. The eighth workshop continued that approachandwascombinedwiththeIFIPWorkingConferenceonHumanError, Safety and Systems Development, HESSD 2009. There is an obvious synergy betweenthetwo workshops,asa rigorous,engineeringapproachto userinterface development can help in the prevention of human error and the maintenance of safety in critical interactive systems. The 12 papers presented here take a variety of approaches and cover d- ferent domains of the application of task modeling. We begin with higher-level perspectives on business processes that enable us to drive user interface dev- opment. Aspects of the general design process are also considered and applied to service-oriented and augmented reality interaction. Formal methods are also investigated for more rigorous development. Model-driven development is also recognized for its contribution to high-level interface design, and continuing the software engineering theme, approaches based on UML are presented. Sousa et al. propose a model-driven approach to linking business processes with user interface models. Their approach is demonstrated in the context of a large ?nancial institution and they show how the alignment between UI models and business can be managed, taking advantage of the traceability provided by model-driven design. Neubauer et al. also consider a ?ow-oriented modeling of business processes as a more open approach to capturing the dynamics of process modeling and understanding.