Change impact graphs: Determining the impact of prior codechanges
Information and Software Technology
Visualizing protected variations in evolving software designs
Journal of Systems and Software
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When trying to understand the evolution of a software system it can be useful to visualize the evolution of the sys- tem's architecture. Existing tools for viewing architectural evolution assume that what a user is interested in can be described in an unbroken sequence of time, for example the changes over the last six months. We present an alternative approach that provides a lightweight method for examining the net effect of any set of changes on a system's architec- ture. We also present Motive, a prototype tool that imple- ments this approach, and demonstrate how it can be used to answer questions about software evolution by describing case studies we conducted on two Java systems.