Software reliability assessment method based on component influence

Abstract

The invention discloses a software reliability assessment method based on component influence. The software reliability assessment method belongs to the technical field of software reliability evaluation. According to the software reliability assessment method, abstraction and modeling of a software system structure are realized through the directed graph; graph attribute characteristics related to software are defined; the component influence is introduced to describe the influence of different components on the system reliability; the software reliability assessment method comprises the following steps: firstly, dividing components into input / output components and common components; respectively establishing influence measurement models of the two types of components; then, solving the problem of system structure diversity in a complex software system through a complex structure state mapping mechanism; and calculating reliability parameters of each state after conversion in combination with the influence of the component; and finally, establishing a reliability model by adopting a Markov chain, so that the evaluation of software reliability is realized, and the accuracy of reliability analysis is improved, and the universality is relatively high.

Description

technical field [0001] The invention provides a software reliability evaluation method based on component influence, which belongs to the field of software reliability evaluation. Background technique [0002] At present, software reliability evaluation models are mainly divided into two categories according to different test methods: reliability growth model based on test data (black box model), and reliability analysis model based on architecture (white box model). The black-box model relies on a large amount of failure data collected during software testing, and reliability analysis is performed through probability theory or mathematical statistics knowledge, which is only applicable to the later stage of software development. The white-box model combines software internal structure and component reliability information to evaluate the overall reliability of the system, which can run through the software design and has gained more and more attention. In the white box mod...

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Problems solved by technology

Moreover, the software reliability analysis method based on the Markov chain requires that the internal components of the software meet the Markov property and the independent failure conditions, but the actual internal structure of the software system does not all meet the above conditions, so the above models are directly used to evaluate these software systems The reliability is not accurate

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