This paper focuses on in-process measurements during requirements definition where measurements of processes and products are relatively difficult. However, development processes in Japan based on the Enterprise Architecture method provide standardized formats for such upstream processes and products, allowing in-process measurements. Based on previous work and on this examination of in-process measurements of requirements definition with the Enterprise Architecture method and previous results of empirical studies of in-process measurements and empirically validates of later development processes, this paper proposes a new measurement model, the "Full In-Process Process and Product (I-PAP) Measurement Model," which includes the complete software development process from requirements to maintenance.

Standardization of the requirements definition phase using the Enterprise Architecture method in Japan allows in-process measurement across the complete development lifecycle. Combining this with collaborative filtering and a project benchmark database will support project evaluation, estimation, and prediction.