Adapting Use Case Model for COSMIC-FFP Based Measurement

The COSMIC-FFP estimation is defined using abstract , domainindependent terms that need to be mapped onto the n otions of the utilized software development methodology. On the other hand, fo r pr ductivity reasons it is important to avoid model reconstruction dedicate d for just measuring purposes. Use Case model seems to be an optimum candida te for serving both general purpose requirement management and measurement input model needs. The measurement preparation influences to some exte nt th perspective of the use case model, but can also enforce its quality. I n this paper we describe our experiences in adjusting both use case model style and detailed measurement principles to achieve synergy between requirement s pecification and size estimation, and to keep the counting intuitive and adeq uate. We focus on resolving the functional redundancy issue by appropriate Use Case organization. In addition, the suggested style of use case specification is i tended to make allow counting the functional size units in a straightfor wa d way for particular scenario step specifications. Some remarks on counting use case variants and different actor sets are also provided.