基于FR－NFR矩阵的软件产品线需求差异度量方法

摘要

Software product line is a large-scale and large-component software reuse technology applying in specific domain; it is widely accepted by software developers. The requirement analysis of software product line is the key issue in the technology research field. This article expounds the classification of software product line's requirements, and gives formal representation on the basis of demand; analyzes the similarity of requirement, suggests to describe requirements via FR-NFR matrix model, and measures the requirement difference based on FR-NFR matrix. The target of difference measurement is to guarantee the quality of reusing and improve the reusing rate of existing core assets, meanwhile offers support to the evolution of product line.%软件产品线是一种面向特定领域的大规模、大粒度的软件复用技术，目前已被软件开发人员普遍接受。基于软件产品线的需求分析是产品线技术研究领域的一个关键问题。通过对软件产品线的需求进行类型分解，并在此基础上对需求形式化表示；通过分析需求的相似性，提出用FR－NFR矩阵模型来描述需求，并基于FR－NFR矩阵来度量需求差异。差异度量的最终目的在于确保复用质量的同时，提高现有核心资产的复用率和为产品线的演化提供支持。