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D-S理论中证据损耗分析及改进方法

Evidence Ullage Analysis in D-S Theory and Development

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【作者】 徐凌宇张博锋徐炜民徐怀宇郭非凡

【Author】 XU Ling-Yu1+, ZHANG Bo-Feng1, XU Wei-Min1, XU Huai-Yu2, GUO Fei-Fan3 1(School of Computer Science and Engineering, Shanghai University, Shanghai 200072, China) 2(Department of Computer Science, University of California, Los Angeles 90095, USA) 3(Beth Medical Center, Harvard University, Boston 02215, USA)

【机构】 上海大学计算机科学与工程学院加州大学洛杉矶分校计算机系哈佛大学贝斯医学中心 上海200072上海200072洛杉矶90095美国波士顿02215美国

【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.

【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.

【基金】 国家自然科学基金~~
  • 【文献出处】 软件学报 ,Journal of Software , 编辑部邮箱 ,2004年01期
  • 【分类号】TP301
  • 【被引频次】56
  • 【下载频次】393
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