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Evidence theory information blending decision method based on state vector distance

A technology of evidence theory and state vector, applied in the field of information processing, can solve problems such as poor versatility, unsatisfactory decision-making effect, and strong subjectivity.

Inactive Publication Date: 2005-07-27
HOHAI UNIV +1
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  • Summary
  • Abstract
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Problems solved by technology

These two types of methods have defects such as strong subjectivity, poor versatility, unclear meaning, and unsatisfactory decision-making effects.

Method used

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  • Evidence theory information blending decision method based on state vector distance
  • Evidence theory information blending decision method based on state vector distance
  • Evidence theory information blending decision method based on state vector distance

Examples

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Embodiment

[0014] Taking the water quality monitoring data of a certain hydrological station in the Yangtze Estuary from January to March in 2002 as the information source, it is fused based on the D-S evidence theory, and the fused result is used as the object to illustrate the implementation steps of the present invention.

[0015] (1) Determine the information fusion results based on D-S evidence theory. See Table 1 for the basic reliability distribution values ​​of water quality monitoring data. According to the characteristics of water quality evaluation, the identification frame Θ is selected as {I, II, III, IV} and its power set P(Θ)={I, I II, II, II III, III, III IV, IV, Θ}, I, I II, II, II III, III, IIIIV, and IV correspond to the water quality category I, I II, II, II, III, III, III, IV, and IV respectively, and Θ corresponds to the uncertain water quality category. Based on the D-S evidence theory, it is fused, and the results are shown in Table 2.

[0016] Table 1 Basic cr...

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Abstract

A decision method includes confirming information compromise result based on D-S evidence theory confirming focal element support degree and candidate decision vector, confirming ideal state vector of candidate decision and distance between state vectors; finally confirming total support degree of candidate decision Ai(I=1,2, lambda, m) and then selecting maximum A* as D-S evidence compromise decision result based on state vector distance.

Description

technical field [0001] The invention relates to an evidence theory information fusion decision-making method based on state vector distance for decision-making on multi-source heterogeneous information fusion results. It belongs to the field of information processing technology. Background technique [0002] At present, there are two main forms of decision-making methods based on the multi-source information fusion results of D-S (Dempster-Shafer) evidence theory: one is based on the attributes of decision-making primitives (elements that cannot be further divided in the identification frame Θ); the other is a combination of Attributes of decision primitives and non-primitives. These two types of methods have defects such as strong subjectivity, poor versatility, unclear meaning, and unsatisfactory decision-making effects. Contents of the invention [0003] The object of the present invention is to design a D-S evidence information fusion decision-making method based on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18G06F17/00
Inventor 王建颖徐立中林志贵马小平
Owner HOHAI UNIV
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