A variable weight approach for evidential reasoning
来源期刊：中南大学学报(英文版)2013年第8期
论文作者：CHANG Lei-lei(常雷雷) LI Meng-jun(李孟军) JIANG Jiang(姜江)
文章页码：2202 - 2211
Key words：probability deficiency; evidential reasoning (ER); inadequate information; variable weight; consensus
Abstract: A variable weight approach was proposed to handle the probability deficiency problem in the evidential reasoning (ER) approach. The probability deficiency problem indicated that the inadequate information in the assessment result should be less than that in the input. However, it was proved that under certain circumstances, the ER approach could not solve the probability deficiency problem. The variable weight approach was based on two assumptions: 1) the greater weight should be given to the rule with more adequate information; 2) the greater weight should be given to the rules with less disparate information. Assessment results of two notional case studies show that 1) the probability deficiency problem is solved using the proposed variable weight approach, and 2) the information with less inadequacy and more disparity is provided for the decision makers to help reach a consensus.
CHANG Lei-lei(常雷雷)1, LI Meng-jun(李孟军)1, 2, JIANG Jiang(姜江)1
(1. College of Information System and Management, National University of Defense Technology,
Changsha 410073, China;
2. Department of Mathematics, University of Birmingham, Birmingham B152TT, UK)
Abstract:A variable weight approach was proposed to handle the probability deficiency problem in the evidential reasoning (ER) approach. The probability deficiency problem indicated that the inadequate information in the assessment result should be less than that in the input. However, it was proved that under certain circumstances, the ER approach could not solve the probability deficiency problem. The variable weight approach was based on two assumptions: 1) the greater weight should be given to the rule with more adequate information; 2) the greater weight should be given to the rules with less disparate information. Assessment results of two notional case studies show that 1) the probability deficiency problem is solved using the proposed variable weight approach, and 2) the information with less inadequacy and more disparity is provided for the decision makers to help reach a consensus.
Key words:probability deficiency; evidential reasoning (ER); inadequate information; variable weight; consensus
