Change Impact Analysis: An Earthquake Metaphor. Hassaine, S., Boughanmi, F., Gu�h�neuc, Y., Hamel, S., & Antoniol, G. In Sim, S. E. & Ricca, F., editors, Proceedings of the 19<sup>th</sup> International Conference on Program Comprehension (ICPC), pages 209–210, June, 2011. IEEE CS Press. Poster. 2 pages.
Change Impact Analysis: An Earthquake Metaphor [pdf]Paper  abstract   bibtex   
The maintenance of large programs is a costly activity because their evolution often leads to two problems: an increase in their complexity and an erosion of their design. Impact analysis is crucial to make decisions among different alternatives to implement a change and to assess and plan maintenance activities by highlighting artefacts that should change when another artefact changes. Several approaches were proposed to identify software artefacts being affected by a change. However, to the best of our knowledge, none of these approaches have been used to study two pieces of information: (1) the scope of a change in a program and (2) the propagation of the change in time. Yet, these pieces of information are useful for developers to better understand and, thus, plan changes. In this paper, we present a metaphor inspired by seismology and propose a mapping between the concepts of seismology and software evolution. Our metaphor relate the problems of (1) change impact and earthquake's debris and (2) change propagation and damaged site predictions to observe the scopes and the evolution in time of changes. We show the applicability and usefulness of our metaphor using Rhino and Xerces-J.

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