Prise en compte de l'utilisateur dans le processus de conception d'une application d'édition de modèles de tâches

Interactive application design iterates on: needs analysis (human and technical), specification, implementation and validation. In user-centred design, the specifications of use may be expressed by task models. From these models and scenarios, some methods allow to design interactive applications. However, the activity description is not always available (e.g., not provided by previous designers) or not usable. For instance, task models corresponding to an editing activity are composed of tasks that are all (or nearly all) accessible at any time. From such a task model, defining the application structure (component position, control activation) is a difficult task. In order to include users in the design process for this type of activity, designers choose other ergonomics methods such as user testing. This paper presents how an evaluation of usage for an editor of task models (K-MAD) may be used in order to modify the application interface. A study of the pertinence of the modifications (presented in the second part) shows that they imply to decrease the time to edit.