Comparison of Requirement Items Based on the Requirements Change Management System of QONE

Requirements changes are difficult to avoid in software development processes, and how to manage requirements change is still an open issue. This paper proposes an innovative algorithm, named LCS-NP++, for comparing different versions of requirement specifications to decide requirement changes. We have integrated this algorithm into a production software process management platform–Qone, which is developed by Institute of Software Chinese Academy of Sciences. Our practices have shown it is effective and efficient in comparing requirement items.