Uncertain software credibility assessment method based on evidence theory

Abstract

The invention discloses an uncertain software credibility assessment method based on an evidence theory. The method comprises the following steps that: (1) on the basis of a utility theory and the evidence theory, a software credibility assessment process requesting driving is defined and critical scientific problems and study difficulties to be solved are demonstrated clearly in credibility assessment reasoning process; (2) the standard formal definition of a multiscale quantitative index system TEIS based on multidimensional credible attribute is given; (3) ignorance space in an original cautious connection rule is differentiated and is led into an association coefficient based on discount and relative weight and a novel evidence composite rule-ECCR under relative belief background is defined in order to blend uncertain information; and (4) in accordance with complex hierarchy characteristic among credible indexes, a software credibility assessment reasoning module relative to a consideration information source is established, the uncertain software credibility assessment reasoning module is structured and solved according to the evidence theory and ECCR is used to solve the information fusion problem under the relative background of assessment information source.

Description

technical field [0001] The present invention relates to the technical field of software engineering and trusted software evaluation, in particular to a software credibility evaluation index system obtained from the dynamic description of credibility requirements, which quantifies and reasones the credibility status of software entities, and determines accordingly The comprehensive assessment of software credibility provides an important basis for the analysis of untrustworthy factors and the formulation of improvement strategies, specifically an uncertain software credibility assessment method based on evidence theory. Background technique [0002] Software credibility refers to the evaluation of whether all non-functional attributes (also called trusted attributes) of software entities comply with predetermined rule sets based on reasonable evidence or experience. As different aspects reflecting software quality, reliability, reliability, safety, availability, performance, ...

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Problems solved by technology

After research, it is found that the main problems in the evaluation process of trusted software are: the selection of trusted measurement indicators, the reasonable quantification of indicators, the fusion of multi-dimensional information, and the complex evaluation reasoning logic, etc., all of which require us to study more feasible solutions

[0012] The main defect of these models is that they do not effectively solve the problems existing in the software credibility evaluation process: the selection of credibility measurement indicators, the reasonable quantification of indicators, the fusion of multi-dimensional information and the complex evaluation reasoning logic, etc., cannot be given. It is difficult to realize the credibility evaluation of complex software systems

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