The software product line (PL) approach has been applied as a successful software reuse technique for specific#R##N##R##N#domains. The SPL architecture (PLA) is one of the most important SPL core assets as it is the abstraction of#R##N##R##N#the products that can be generated, and it represents similarities and variabilities of a PL. Its quality attributes#R##N##R##N#analysis and evaluation can serve as a basis for analyzing the managerial and economical values of a PL. This#R##N##R##N#analysis can be quantitatively supported by metrics. Thus, we proposed metrics for the PLA extensibility#R##N##R##N#quality attribute. This paper is concerned with the empirical validation of such metrics. As a result of the experimental#R##N##R##N#work we can provide evidence that the proposed metrics serve as relevant indicators of extensibility#R##N##R##N#of PLA by presenting a correlation analysis.
['A Edson Oliveira', 'Itana Maria de Souza Gimenes']
Empirical Validation of Product-line Architecture Extensibility Metrics