Visualization algorithms for feature models in concern-driven software development

Concern-Driven Development builds on the disciplines of model-driven engineering, software product lines and aspect-orientation to define broad units of reuse, so called concerns. The feature model of a concern plays a central role, since it describes the variants encapsulated by a concern, such as, alternative functionality or different design solutions. This paper argues that depending on who is working with the feature model, the encapsulated features and their relationships should be visualized differently: the concern designer is working within the concern module, and therefore needs to see the features of reused concerns that have been selected; the concern user is evaluating if a concern can be reused for a given purpose, and therefore wants to browse the choices that are available.