Effort estimation of use cases for incremental large-scale software development
Proceedings of the 27th international conference on Software engineering
An empirical investigation of software reuse benefits in a large telecom product
ACM Transactions on Software Engineering and Methodology (TOSEM)
Experience Report on the Effect of Software Development Characteristics on Change Distribution
PROFES '08 Proceedings of the 9th international conference on Product-Focused Software Process Improvement
Characterizing software architecture changes: A systematic review
Information and Software Technology
Change profiles of a reused class framework vs. two of its applications
Information and Software Technology
A longitudinal study of development and maintenance
Information and Software Technology
Information systems evolution over the last 15 years
CAiSE'10 Proceedings of the 22nd international conference on Advanced information systems engineering
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The paper presents results from an empirical study of change requests in four releases of a large-scale telecom system that is developed incrementally. The results show that earlier releases of the system are no longer evolved. Perfective changes to functionality and quality attributes are most common. Functionality is enhanced and improved in each release, while quality attributes are mostly improved, and have fewer changes in forms of new requirements. The share of adaptive/preventive changes is lower, but still not as low as reported in some previous studies. Data for corrective changes (defect fixing) have been reported by us in other studies. The project organization initiates most change requests, rather than customers or changing environments. The releases show an increasing tendency to accept change requests, which normally impact project plans. Changes related to functionality and quality attributes seem to have similar acceptance rates. We did not identify any significant difference between the change-proneness of reused and non-reused components.