Metrics for Maintenance

Metrics for Maintenance

Software maturity index (SMI)

–        Provides an indication of the stability of a software product based on changes that occur for each release

SMI = [M_T - (F_a + F_c + F_d)]/M_T
Where
M_T = #modules in the current release
F_a = #modules in the current release that have been added
F_c = #modules in the current release that have been changed
F_d = #modules from the preceding release that were deleted in the current release

–        As the SMI (i.e., the fraction) approaches 1.0, the software product begins to stabilize

–        The average time to produce a release of a software product can be correlated with the SMI