一种基于改进PCFG句法分析的需求模板符合性检查优化方法  

Optimization Method for Checking of Conformance to Requirements Template Based on Improved PCFG Syntactic Parsing

作　　者：曹步展 王立松[1] 康介祥[2] 高忠杰 王辉[2] 尹伟[2] 于梦元 CAO Bu-zhan;WANG Li-song;KANG Jie-xiang;GAO Zhong-jie;WANG Hui;YIN Wei;YU Meng-yuan(College of Computer Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210000,China;Department of Software,China National Aeronautic Radio Electronics Research Institute,Shanghai 200233,China)

机构地区：[1]南京航空航天大学计算机科学与技术学院,南京210000 [2]中国航空无线电电子研究所软件部,上海200233

出　　处：《小型微型计算机系统》2021年第9期1999-2003,共5页Journal of Chinese Computer Systems

基　　金：国家“九七三”重点基础研究发展计划项目(2014CB744900)资助。

摘　　要：需求模板是对需求的一种规范描述,能够减少自然语言需求中的歧义.在进行需求分析之前,检查需求是否符合模板显得尤为重要.由于传统的手工检查非常耗时,为此许多学者展开了相关研究,并提出了一些自动的需求模板符合性检查方法.然而,现有的自动检查方法都是基于组块分析进行的,其召回率、精度均有待于提高.本文提出一种基于改进PCFG句法分析的需求模板符合性检查优化方法.该方法引入句法分析以提取出名词组块,进而达到提升需求模板符合性检查的精度、召回率的目的.最后,本文将该方法与现有的自动检查方法进行对比实验.实验结果表明相对于现有的检查方法,本文提出的方法在召回率、精度方面均有显著的提高.The requirement template is a standard description of requirements,which can reduce ambiguity in natural language requirements.It is crucial to check whether the requirement conforms to the template before the requirement analysis.The traditional Manual inspection is very time-consuming for this reason,many researchers have carried out relevant research on it and put forward some automatic requirements template compliance checking methods.However,the existing automatic inspection methods are based on chunk analysis,and the recall rate and accuracy need to be improved simultaneously.This paper presents an optimization method of requirement template conformance checking based on improved PCFG syntax analysis.Syntactic parsing is introduced to extract noun chunks,which improves the accuracy and recall rate of requirement template confonnance checking.Finally,we conduct the comparative experiment between the presented approach and the existing approaches and conclude that the presented approach is better in recall rate and precision significantly.

关 键 词：需求模板 PCFG 句法分析 符合性检查 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]