A Preliminary Study for the development of an Early Method for the Measurement in Function Points of a Software Product
A Preliminary Study for the development of an Early Method for the Measurement in Function Points of a Software Product
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软件产品功能点早期测量方法开发的初步研究
DOI：
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发表时间：
2004
期刊：
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通讯作者：
Gustavo Uria Paino
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文献类型：
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作者：
R. A. Monge;Francisco Sanchis Marco;F. Cervigón;V. Garcia;Gustavo Uria Paino
Albrecht的功能点分析（FPA）是一种确定软件产品功能规模的方法。国际功能点用户组（IFPUG）制定了FPA作为软件功能规模度量的标准。IFPUG [3] [4]方法遵循Albrecht的方法，并在其扩展版本中对规则和提示进行了修改，旨在改进它[7]。应用该方法所需的文件级别是功能规范，对应于Rudolph分类[8]中的I级。对于那些致力于为第三方开发软件的公司来说，当他们必须为这种开发准备适当的预算时，这些文档是有困难的。然后，我们需要开发一种早期方法[6] [9]来度量软件产品的功能大小，我们将其命名为早期方法或EFPM（早期功能点方法）。应用EFPM所需的文件是用户需求或一些类似的文件。这是奥维耶多大学正在进行的一项研究工作的一部分。在这篇文章中，我们只展示了以下结果：
从使用IFPUG方法v.4.1的一组项目的测量中，我们获得了每个项目的功能点总数与ILF数量、ILF + EIF数量和EI + EO + EQ数量的计数器之间的线性相关系数。
使用初步结果，我们计算回归函数。这一结果，我们将使我们能够确定的因素要考虑的发展EFPM和估计的功能点。
The Function Points Analysis (FPA) of A.J. Albrecht is a method to determine the functional size of software products. The International Function Point Users Group, (IFPUG), establishes the FPA like a standard in the software functional size measurement. The IFPUG [3] [4] method follows the Albrecht's method and incorporates in its succesive versions modifications to the rules and hints with the intention of improving it [7]. The required documentation level to apply the method is the functional specification which corresponds to level I in the Rudolph's clasification [8]. This documentation is avalaible with some difficulty for those companies which are dedicated to develop software for third parties when they have to prepare the appropiate budget for this development. Then, we face the need of developing an early method [6] [9] for measuring the functional size of a software product that we will name to abbreviate it Early Method or EFPM (Early Function Point Method). The required documentation to apply the EFPM would be the User Requirements or some analogous documentations. This is a part of a research work now in process in Oviedo University. In this article we only show the following, results:
From the measurements of a set of projects using the IFPUG method v. 4.1 we obtain the linear correlation coefficients between the total number of Function Points for each project and the counters of the ILFs number, ILFs+EIFs number and EIs+EOs+EQs number.
Using the preliminary results we compute the regression functions. This results we will allow us to determine the factors to be considered in the development of EFPM and to estimate the function points.