Investigating the Relation between the Task Model and the Domain Model in a Task-Based Approach to User Interface Design

One limitation of existing model-based approaches for user interface design comes from exploiting models in isolation. The objective of this paper is to elaborate on a design framework aiming to integrate design knowledge by considering task and domain model simultaneously. In this respect task modeling at operational level is integrating requirements coming from several activities: task analysis, domain modeling and ergonomic analysis. A special attention is paid to relationships between domain objects. from which two types are discussed: aggregations and associations. Analyzing relationships makes it possible to include appropriate interaction structures into the task models. In turn, this enriched task model leads to the identification of interaction object groups and pre-defined dialog units in the user interface.