基于信任度和确定度的证据加权组合方法

王路; 邢清华; 毛艺帆

doi:10.11959/j.issn.1000-436x.2017010

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基于信任度和确定度的证据加权组合方法

学术论文 | 更新时间：2024-06-05

- 基于信任度和确定度的证据加权组合方法
- Weighted evidence combination based on degree of credibility and certainty
- 通信学报 2017年38卷第1期页码：83-88
- 作者机构：
  
  空军工程大学防空反导学院，陕西西安 710051
- 作者简介：
  
  [ "王路（1987-），男，陕西三原人，空军工程大学博士生，主要研究方向为地基反临近空间飞行器指挥决策问题。" ]
  [ "邢清华（1966-），女，山西文水人，博士，空军工程大学教授，主要研究方向为防空反导作战建模与仿真。" ]
  [ "毛艺帆（1988-），女，陕西三原人，空军工程大学博士生，主要研究方向为预警信息运用方法研究。" ]
- 基金信息：
  
  国家自然科学基金资助项目(61272011)
- DOI：10.11959/j.issn.1000-436x.2017010
  中图分类号： TP391
- 网络出版日期：2017-01，
  
  纸质出版日期：2017-01-25
- 稿件说明：
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王路, 邢清华, 毛艺帆. 基于信任度和确定度的证据加权组合方法[J]. 通信学报, 2017,38(1):83-88.

Lu WANG, Qing-hua XING, Yi-fan MAO. Weighted evidence combination based on degree of credibility and certainty[J]. Journal on communications, 2017, 38(1): 83-88.
王路, 邢清华, 毛艺帆. 基于信任度和确定度的证据加权组合方法[J]. 通信学报, 2017,38(1):83-88. DOI： 10.11959/j.issn.1000-436x.2017010.

Lu WANG, Qing-hua XING, Yi-fan MAO. Weighted evidence combination based on degree of credibility and certainty[J]. Journal on communications, 2017, 38(1): 83-88. DOI： 10.11959/j.issn.1000-436x.2017010.

摘要

针对高冲突条件下 Dempster 规则失效的问题，提出一种基于信任度和确定度的证据加权组合方法。首先，对传统证据冲突度量方法—夹角余弦进行了修正，使其能有效处理证据中包含非单子集焦元的情况，并基于其建立了证据信任度模型；其次，为综合反映证据体包含非单子集焦元的程度以及证据体概率分配函数的离散程度，建立了基于证据精度与证据熵的证据确定度模型；然后将信任度与确定度结合来确定证据权重；最后依此权重对证据进行加权平均，并使用 Dempster 规则对平均后的证据进行组合。算例分析表明，与传统证据加权组合方法相比，所提方法在冲突消减和聚焦能力2个方面都具有更好的性能。

Abstract

To overcome the invalidation problem of Dempster rule with high conflict

a weighted combination method based on degree of credibility and certainty was proposed.Firstly

the cosine similarity was modified to hold the ability to measure the evidence conflict when multi-subset focal elements were included

followed by the building of evidence credibility model.Secondly

the evidence certainty model based on precision and entropy was presented

which can both reflect the evidence’s degree of multi-subset focal elements and the dispersion degree of probability assignment.Then the weighted coefficient was determined by credibility and certainty.Finally

the normalized weighted coefficient was used to average the basic probability assignment

and the final combination result can be obtained according to Dempster rule.Numerical examples show that

compared with other traditional weighted combination methods

the proposed approach has made better performance in reducing conflict and accelerating convergence.

关键词

Keywords

references

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