Improving Use Case Point (UCP) Based on Function Point (FP) Mechanism

Abstract

The cost of error correction has been increasing exponentially with the advancement of software industry. To minimize software errors, it is necessary to extract accurate requirements in the early stage of software development. In the previous study, we extracted the priorities of requirements based on the Use Case Point (UCP), which however revealed the issues inherent to the existing UCP as follows. (i) The UCP failed to specify the structure of use cases or the method of write the use cases, and (ii) the number of transactions determined the use case weight in the UCP. Yet, efforts taken for implementation depend on the types and number of operations performed in each transaction. To address these issues, the present paper proposes an improved UCP and applies it to the prioritization. The proposed method enables more accurate measurement than the existing UCP-based prioritization.