关键词: 软件可信性, 经济学, 需求工程, 非功能需求, 策略

Abstract: For the importance of software trustworthiness and the effects of strategy selected of non-functional requirements for software trustworthiness, in the early phase of requirements engineering, the advantages of economics methods which can be used to assist the judgment are combined with requirements engineering, and the framework of the strategy selected which meet non-functional requirements are proposed to assist the strategy selected. Firstly, the concept of software requirements and its model are defined, as the conversion between the concept of economics and requirements engineering, for example, non-functional requirements can be seen as production factors and stakeholders can be seen as producer, and non-functional requirements-economic processes framework are defined. Then, based on fuzzy set theory and information entropy, acquisition method of the key non-functional requirements is proposed. Thirdly, the benefit of strategy is calculated by the related method of production process which can assist the strategy selected. Finally, through using the method in mobile infrastructure maintenance management platform, feasibility of the proposed approach is described.

Key words: software trustworthiness, economics, requirements engineering, non-functional requirements, strategy