需求工程中的不确定性研究

Uncertainty Research in Requirement Engineering

1 引言 用户需求一般用自然语言描述,是非形式化的,因而在生成确定的、形式化的需求规格时不可避免地会牺牲用户的部分需求.采取何种方法能尽量减少信息损失和不一致,从而使需求规格更接近于用户需求是软件开发中必须解决的重要问题.

There are at least two challenges with requirements engineering- First ,requirements are usually vague and imprecise in nature; Second ,requirements often conflict with each other and many conflicts are difficult to identify. This paper discusses inconsistency and imprecision on requirement respectively. Then,it points out that comprehensive method should be adopted to face with natural attribution in requirement engineering. The difficulties of this kind of methods are how to limit solving domain and induce solving model by contextual knowledge.