Traceability Link Mining-Focusing on Usability

The recovery of traceability links to requirements from a functional model created through analysis/design is crucial to understand existing systems for reuse, improvement or maintenance. Functional and non-functional requirements generally are implicitly interpreted and non-systematically woven into a functional model by analysts/designers. Traditional traceability link recovery methods focusing on terminology or syntactic structure, however, have a recovery limit because such interpretation and weave are not paid enough attention. This paper presents a novel idea to decompose such a functional model into model components in order to accurately trace a components to requirements especially non-functional requirements. We call such the decomposition traceability link mining. A screen transition model is adopted as the functional model because of the focus on usability.