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System evaluation and detection method by Bayesian model

A Bayesian model, Bayesian network technology, applied in special data processing applications, instruments, electrical digital data processing, etc. , the effect of less computational difficulty

Inactive Publication Date: 2015-04-29
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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Problems solved by technology

[0019] The present invention provides a method for system evaluation and detection using Bayesian model, which solves the technical problems of large amount of calculation, difficult calculation, and sometimes even impossible calculation in the prior art when fault tree is used for system fault diagnosis and analysis. Realized the use of Bayesian model for system evaluation and detection with small calculation amount, low calculation difficulty, simple and practical technical effect

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  • System evaluation and detection method by Bayesian model
  • System evaluation and detection method by Bayesian model
  • System evaluation and detection method by Bayesian model

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Embodiment 1

[0056] In the first embodiment, a method for system evaluation and detection using Bayesian model is provided, please refer to Figure 1-Figure 4 , The method includes:

[0057] Step A: Establish a logical relationship and event relationship between the software system and the database variables and relationships in the software system after conversion;

[0058] Step B: Through step A, establish a fault tree model for the logic model;

[0059] Step C: Establish a Bayesian network based on the fault tree model;

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Abstract

The invention discloses a system evaluation and detection method by a Bayesian model. The method includes: step A, establishing a logic relationship and an event relationship between a software system and a database therein after variable and relationship conversion; step B, establishing a fault tree model for a logic model according to the step A; step C, establishing a Bayesian network based on the fault tree model; step D, conducting system evaluation and detection based on the Bayesian network. The system evaluation and detection method by the Bayesian model has the advantages of low computational complexity, low computational difficulty, simplicity and practicality when used for system evaluation and detection by the Bayesian model.

Description

Technical field [0001] The present invention relates to the field of computer software theory and software system research, in particular to a method for system evaluation and detection using Bayesian models. Background technique [0002] The definition of Bayesian network, Bayesian network, also known as Bayesian belief network, is a directed graphic description of probability relations, and it provides a way to visualize the intuitive map of knowledge. A Bayesian network is a Directed Acyclic Graph (DAG), which consists of nodes representing variables and directed edges connecting these nodes. Among them, nodes represent variables in the universe of discourse, and directed arcs represent the relationship between variables (that is, influence probability). The uncertainty knowledge is expressed through graphs, and the dependence of local conditions can be expressed in the model through the annotation of conditional probability distribution (CPD). Sex. [0003] It can be seen fro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 常政威李晓瑜江维刘钊祎谢晓娜方玉
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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