Weighted evidence combination method based on new evidence conflict measurement approach

The correct measurement of conflict evidence and the conflict extent among evidences are the premise of using the Dempster-Shafer theory to complete the combination of conflict evidence. Some typical conflict measurement methods are reviewed by analyzing their advantages and disadvantages, and a new weighted evidence combination method is proposed base on the effective conflict measurement. Firstly, the conflict degree between two pieces of evidence is obtained from the similarity measure. Then the evidence credibility is given according to its amount of conflict with others. After that, the evidence is revised and weighted based on this credibility. Finally, the fusion is accomplished by adopting the combination rule of Dempster. Numerical examples illustrate that the proposed method can measure the degree of conflict evidence correctly, solve the problem of conflict evidence fusion effectively and improve the speed and accuracy of convergence.