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| D-S理论中证据损耗分析及改进方法 |
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徐凌宇1, 张博锋1, 徐炜民1, 徐怀宇2, 郭非凡3
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1.上海大学,计算机科学与工程学院,上海,200072;2.加州大学,洛杉矶分校,计算机系,洛杉矶,90095,美国;3.哈佛大学,贝斯医学中心,波士顿,02215,美国
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| 摘要: |
| 分析了传统D-S理论在证据组合过程中的误差、抗干扰能力弱以及与人类思维相悖的原因;认为主要是由于部分定义和规则的局限性引发了组合过程中的证据损耗;提出了一种扩展的定义和组合规则,发现并解决了完全兼容证据组合过程中的证据损耗,有效地化解了冲突;理论分析和实验结果支持了方法的合理性与可行性. |
| 关键词: 信息融合 Dempster-Shafer 证据理论 组合规则 兼容 冲突 证据损耗 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60203011 (国家自然科学基金) |
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| Evidence Ullage Analysis in D-S Theory and Development |
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XU Ling-Yu,ZHANG Bo-Feng,XU Wei-Min,XU Huai-Yu,GUO Fei-Fan
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| Abstract: |
| In this paper, it is found that there are errors in D-S combination rules even though the evidences are unconflict. The error, unanti-jamming and opposition during the evidence combination in traditional D-S theory are studied. An effort has been made to prove that the evidence ullage is caused by ill-suited definitions and ill-suited rules in the combination process. In this paper, new generic definitions and combination rules are also proposed. The evidence ullage in the compatible evidence combination process in terms of the definitions and rules is found and then solved. The experimental results show that the methodology developed here can not only solve the conflicts efficiently, but also produce reasonable results. |
| Key words: information fusion Dempster-Shafer evidence theory combination rule unconflict conflict evidence ullage |
