关键词: 软件度量, 功能点分析, 简单功能点, 简化功能点

Abstract: FPA(function point analysis) measurement has been regarded as a popular method and played an important role in the early stage of software development since it was figured out in 1978. But it is very difficult to put into use in practice and meet the needs of the rapidly developed software industry. Some simplified methods, such as E&QFP, NESMA, Simplified FP, ISBSG, ILF model, Early FP and SiFP, have been worked out accordingly to overcome the shortcoming of traditional methods. This paper classifies these methods according to the principles they adopt, and then compares them from the aspects of basic functional component (BFC), the granularity of BFC, the difficulty of capturing BFC, the weights of BFCs and the measurement process of each method. It can help the users to have deeper understanding about the existing simplified methods, to choose the right methods according to their needs, and even to work out their own simplified methods.

Key words: software metrics, function point analysis, simple function point, simplified function point