Bayesian network-based internetware dependability evaluation model

Abstract

The invention discloses a Bayesian network-based internetware dependability evaluation model. By aiming at the structural complexity of the internetware and the dynamic characteristics of a system, and researching the system structure of the internetware by using a theory of a software architecture, a structural pattern-based internetware dependability evaluation method is put forward; an architecture model and a semantic structure model of the internetware are established, and structural and semantic analyses are performed on the internetware from top to bottom; a structural pattern-based conditional probability matrix and the Bayesian network are established, a calculating method of system dependability and structure dependability evaluation indexes is put forward, and the dependability of the overall system is calculated from bottom to top according to the dependability of each entity; and the operational characteristics of the system are comprehensively evaluated by using the Bayesian network to perform integration so as to perfect the dependability evaluation system of the internetware. Practices prove that an internetware dependability evaluation method of the invention is reliable, has systematicness and completeness, and can be used in the fields of software dependability techniques and software evaluation techniques.

Description

【Technical field】 [0001] The invention belongs to the field of software credibility technology and software evaluation technology, and in particular relates to a Bayesian network-based network software credibility evaluation model. 【Background technique】 [0002] Dependability refers to the fact that the services provided by the computer software system are proven and trustworthy. According to different user requirements for system functions, users often have different emphasis on system credibility requirements, and each aspect is an attribute of credibility. Credibility consists of the following properties: Availability, Reliability, Safety, Confidentiality, Integrity and Maintainability. Software credibility is increasingly becoming the focus of attention. [0003] In the 21st century, the network represented by the Internet has gradually integrated into all aspects of human society, which has greatly promoted the process of globalization and expanded the development sp...

AI Technical Summary

Problems solved by technology

[0006] Third, most of the components in the Internet architecture software are provided by third parties, and their source code and internal structure are usually invisible, and can only be accessed through predefined interface specifications, and its credibility is difficult to control

However, Internet-structured software is a whole composed of multiple components interacting and collaborating through the Internet. The evaluation of the overall system credibility cannot be simply superimposed on the credibility of individual components. At present, research results in this area are still relatively lacking.

Moreover, the existing system-level trustworthiness evaluation models are mainly aimed at traditional software systems, without considering the characteristics of Internet-based software, and their trustworthiness calculations are mostly based on black boxes, without in-depth consideration of the system structure.

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