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信度决策树中推理策略的改进
引用本文:郭华伟,施文康,陈智军,邓勇.信度决策树中推理策略的改进[J].上海交通大学学报,2006,40(11):1912-1917.
作者姓名:郭华伟  施文康  陈智军  邓勇
作者单位:上海交通大学,电子信息与电气工程学院,上海,200240
基金项目:国家自然科学基金;上海市自然科学基金;中国博士后科学基金;国防重点实验室基金;教育部重点实验室基金;航空支撑科技基金
摘    要:指出现有信度决策树中推理算法的不足之处,给出了一种新的基于规则的推理算法.新算法充分利用信度函数理论处理不确定信息的优势,采用折扣规则修正叶节点的输出,考虑了测试属性权重对分类结果的影响,提高了分类的精度和可靠性.针对现有证据组合规则处理冲突证据的不足,提出了一种新的证据组合规则,可以将相对可信度等信息有效融入证据组合过程.

关 键 词:信度决策树  信度函数  证据理论  推理  可信度  组合规则
文章编号:1006-2467(2006)11-1912-06
收稿时间:2005-12-26
修稿时间:2005年12月26

The Improvement of Reasoning Methods in Belief Decision Trees
GUO Hua-wei,SHI Wen-kang,CHEN Zhi-jun,DENG Yong.The Improvement of Reasoning Methods in Belief Decision Trees[J].Journal of Shanghai Jiaotong University,2006,40(11):1912-1917.
Authors:GUO Hua-wei  SHI Wen-kang  CHEN Zhi-jun  DENG Yong
Institution:School of Electronic, Information and Electrical Eng. , Shanghai Jiaotong Univ. , Shanghai 200240, China
Abstract:This paper pointed out the shortages of reasoning algorithms of the present belief decision trees and then proposed a new reasoning algorithm.The new algorithm makes the best of the advantage of belief function theory for handling uncertainty,revises the outputs of the relevant leaf nodes using the discounting rule,takes into account the test attribute weights,and thus improves the classification precision and reliability.Additionally,a new evidential combination rule was proposed to overcome the shortages of the existing combination rules.This rule can integrate such information as the relative reliability into the fusion process.
Keywords:belief decision trees  belief functions  evidence theory  reasoning  reliability  combination rule
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