Abstract: The quality of requirements analysis is critical to ensure the quality of software system.Requirement elicitation and analysis can be facilitated by semantic technologies and domain ontology.A method for verifying software requirements with ontology and Semantic Web Rule Language（SWRL） is proposed，where domain ontology acts as a basis and plays significant role in requirement semantics，and can be developed to represent shared knowledge and reusable requirements to improve software requirements specification.Requirements specification which is processed with natural language can be decomposed and refined into a set of atomic requirement items which are represented with triple tuple of semantic elements in domain ontology.The mapping of semantic requirement items with concepts and their relationships to the domain ontology leads to a set of inference rules which are represented by SWRL to verify the consistency of requirements specification.The process of requirements verification is defined in order to evaluate the quality of requirements specification and it is analyzed and validated with an experimental case study.

Key words: requirement decomposition, domain ontology, Semantic Web Rule Language（SWRL）, formal method, requirements verification

摘要： 需求质量已经成为确保软件项目成功的一个重要因素，对复杂软件系统的需求进行检查和验证，是需求工程中非常重要的工作。在基于领域本体的需求获取和分析等相关工作基础上，提出了一种基于本体和语义规则的需求一致性验证方法，将自然语言描述的需求分解成若干结构良好的最小需求项，使用领域本体的概念模型对其进行形式化和结构化的表示。通过领域本体中的知识来映射需求语义，采用语义万维网规则语言（SWRL）来定义需求一致性验证的推理规则，并通过实例对此方法进行了分析和验证。

关键词: 需求分解, 领域本体, 采用语义万维网规则语言（SWRL）, 形式化方法, 需求验证