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Marcus Trapp

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Publications by Marcus Trapp (bibliography)

2011

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Hess, Steffen, Maier, Andreas and Trapp, Marcus (2011): We need non-formal methods based on formal models in interaction design. In: Proceedings of the 2011 Annual European Conference on Cognitive Ergonomics 2011. pp. 287-288.

“Motivation -- With collaborative interaction design, formal models have to be used by expert stakeholders in order to work effectively and efficiently. But these formal models should not be discussed with non-expert stakeholders. Therefore, we use non-formal methods which are based on our formal models when we talk to non-expert stakeholders. Research approach -- Expert stakeholders have to get a common ground for their discussions. To achieve that common ground, expert stakeholders have to use models, which formalize an interaction they want to design. We develop non-formal methods based on a conceptual model that are easy to apply by non-experts. This way, non-expert stakeholders can allow free play to their thoughts and do not have to adopt formal entities and models. Therefore, the expert can easily interpret the information received from non-expert stakeholders by using the underlying conceptual model. Findings/Design -- Early collaboration with non-expert stakeholders in order to design interaction in a user centered way is important and performed best with a formal model for expert stakeholders and non-formal methods based on these formal models for discussions between expert and non-expert stakeholders. Actually, formal modelling is crucial from our point of view, but we experienced that insisting on it when collaborating with non-experts, leads to insufficient results. Take away message -- Without having formal models in mind, non-formal methods cannot be applied effectively for a collaborative design of interactions. Non-formal methods like an open requirements elicitation in form of workshops or interviews may fail gaining all necessary information if there is no formal model which builds the basis for the non-formal methods. Only with formal models, we are able to plan, lead, and analyze non-formal methods in a way to get optimal results.”

2008

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Adam, Sebastian, Ssamula, Kizito, Breiner, Kai and Trapp, Marcus (2008): An Apartment-based Metaphor for Intuitive Interaction with Ambient Assisted Living Applications. In: Proceedings of the HCI08 Conference on People and Computers XXII 2008. pp. 67-75.

“Ambient Assisted Living (AAL) aims at supporting elderly people in their daily lives, allowing them to grow old at home. In order to provide easy remote control over the rapidly growing number of assistance services from anywhere in the apartment, many AAL environments offer a universal control device. However, the problem of structuring the numerous services for intuitive usage has not been solved satisfactorily yet. This paper introduces a spatial metaphor for universal control devices to structure available services based on the elderly person's own apartment. We carried out a study with 18 younger elderly people using a prototype to evaluate the appropriateness and acceptance of this metaphor. The results included in this paper show that this apartment metaphor is appropriate and accepted by this main target group of AAL.”

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