Variability Analysis: From Requirements Engineering Towards Interaction Design

Much research has been devoted to adaptable and adaptive systems over a decade, with the aim to improve user-system interaction. Despite these efforts, we still lack a systematic approach to deal with variations in users, user goals, and contexts of use. In this paper, we revise some previous work on a language-based variability analysis process, propose a structure for the solution space of adaptable and adaptive systems, and illustrate how design decisions on how to cope with variability can be made in this approach.