Knowledge fusion method based on D-S evidence theory

A technology of evidence theory and fusion methods, applied in the direction of reasoning methods, etc., can solve problems such as lack of effective means, and achieve the effect of ensuring validity and accuracy

Active Publication Date: 2014-05-21
BEIJING SIMULATION CENT
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to integrate multiple inference results to obtain comprehensive and highly reliable result knowledge? Existing technologies still lack effective means in knowledge fusion

Method used

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  • Knowledge fusion method based on D-S evidence theory
  • Knowledge fusion method based on D-S evidence theory
  • Knowledge fusion method based on D-S evidence theory

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Embodiment Construction

[0040] The content of the invention of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0041] The following takes a flight test as an example to illustrate the knowledge fusion method based on the D-S evidence theory provided in this embodiment. In this embodiment, the scientific test is, for example, a flight test, and the flight test involves two fields, such as the control field and the power field.

[0042] Such as figure 1 As shown, the knowledge fusion method based on D-S evidence theory provided in this embodiment includes the following steps:

[0043] S1: Sampling scientific experiments in each field to obtain sample data in each field;

[0044] In this embodiment, the flight test in the control field is sampled to obtain the first sample data; the flight test in the power field is sampled to obtain the second sample data, and the first sample data and the second sample data each include For exam...

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Abstract

The invention discloses a knowledge fusion method based on D-S (Dempster-Shafer) evidence theory. The knowledge fusion method comprises the steps of S1, obtaining sample data in each field, S2, determining a discernment frame of scientific experiments, S3, determining the probability of each discernment element in each field, S4, calculating the BPA value of each discernment element in each field, S5, obtaining a similarity distance function between the BPA values of any one discernment element in any two fields through calculation, S6, calculating the similarity measure between the BPA values of any one discernment element in any two fields, S7, calculating the support degree of any one discernment element, S8, calculating the credibility of any one discernment element from all support degrees of the discernment element, and S9, obtaining the BPA value of every discernment element after fusion from the credibilities of all the discernment elements. The knowledge fusion method is applicable to fusion of multiple reasoning result knowledge having great varieties and indeterminacy and one-sidedness.

Description

technical field [0001] The invention relates to the technical field of knowledge fusion, in particular to a knowledge fusion method based on D-S evidence theory. Background technique [0002] In the application of complex product engineering, with the continuous improvement of "digital, intelligent, and green" requirements, "knowledge engineering" is increasingly introduced into the research and application of complex products, and knowledge fusion is one of them. Key technology, its importance is also increasing. Knowledge fusion technology refers to the transformation, integration and fusion of knowledge elements through the organization and management of distributed heterogeneous knowledge sources combined with application requirements, so as to obtain valuable or usable new knowledge, and optimize the structure and connotation of knowledge objects , providing knowledge-based services. [0003] The current knowledge fusion is mainly used to solve the collaborative appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N5/04
Inventor 谷牧柴旭东刘艳
Owner BEIJING SIMULATION CENT
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