一种改进的Web软件非功能需求模型

针对Web软件非功能需求的复杂性, 基于ISO/IEC 9126模型以及Web软件属性图, 对基于ISO的Web软件非功能需求模型进行改进。由于已有的模型不具备明显的解释功能, 所以将Web软件所特有的非功能需求属性添加进原有模型对其进行改进, 将原有模型中的12个子属性扩充为18个子属性, 进而利用问卷调查确定原有模型与改进模型中各属性的评价值, 应用因子分析法计算出各属性的因子载荷与因子累计贡献率。结果表明, 改进后的模型能更好地解释Web软件的非功能需求。

Improved Web software non-functional requirements model

According to the complex non-functional requirements of Web software, based on ISO/IEC 9126 model and Web software attribute graph, this paper made the improvement of Web software non-functional requirements model based on ISO model. Because the existing model did not have obvious explanation function, therefore, increased the Web software unique non-functional attributes to the original model, made the original model extended from 12 attributes to 18 attributes, and then used questionnaire survey to determine each attribute value evaluation of original model and the improved model, it used factor analysis to calculate each attribute factor loading and factor cumulative contribution rate. Finally, the results show that the improved model can better explain Web software non-functional requirements.