软件可信性评估的目的是对软件实体的可信状态有较为全面的主观认知,最终给出改进方案.而软件可信性评估指标系统固有的复杂层级特征,导致我们需要采用全局灵敏度分析等方法找出影响软件可信度的关键失信元并标定其不确定度,进一步给出软件可信性改进方案,最终给出一个较为完善的基于评估结果的可信性问题发现、预测和改进机制.%The purpose of software trustworthiness evaluation is to get some subjective cognition about it more comprehensively.Thus, the modified project can be given.However, due to the inherent complex hierarchy characteristic of the software trustworthiness evaluation index system, we must use some methods, such as global sensitivity analysis, to find out the key factors which affect the reliability of software, then analyze the indeterminacy and get the improvement project.Consequently, a more comprehensive system based on evaluation results can be given.By virtue of the system, we can find, forecast and improve the trustworthiness problems.
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