Function point measurement for object-oriented requirements specification

Function point analysis (FPA) was proposed to help measure the size of software systems and has been widely used in actual software development. However, it has been reported that since function point counting involves judgment on the part of the counter, some difference for the same product would be caused even in the same organization. The paper describes an actual experience of applying FPA to requirements specification at Hitachi Ltd. The authors propose a detailed FPA measurement method for the requirements specification analyzed using the requirements analysis system REQUARIO developed by Hitachi Ltd., and develop a measurement tool based on the method. They have also applied the tool to the actual requirements specification and show the applicability of the tool.