Journal of Systems Engineering and Electronics ›› 2012, Vol. 23 ›› Issue (1): 1-9.doi: 10.1109/JSEE.2012.00001


New conflict representation model in generalized power space

You He1, Lifang Hu1,2,∗, Xin Guan1,3, Deqiang Han4, and Yong Deng5   

  1. 1. Research Institute of Information Fusion, Naval Aeronautical and Astronautical University, Yantai 264001, P. R. China;
    2. Navy Armament Academy, Beijing 102249, P. R. China;
    3. College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, P. R. China;
    4. Institute of Integrated Automation, Xi’an Jiaotong University, Xi’an 710049, P. R. China;
    5. School of Electronics and Information Technology, Shanghai Jiaotong University, Shanghai 200240, P. R. China
  • Online:2012-02-25 Published:2010-01-03


The study on alternative combination rules in Dempster- Shafer theory (DST) when evidences are in conflict has emerged again recently as an interesting topic, especially in data/information fusion applications. The earlier researches have mainly focused on investigating the alternative which would be appropriate for the conflicting situation, under the assumption that a conflict is identified. However, the current research shows that not only the combination rule but also the classical conflict coefficient in DST are not correct to determine the conflict degree between two pieces of evidences. Most existing methods of measuring conflict do not consider the open world situation, whose frame of discernment is incomplete. To solve this problem, a new conflict representation model to determine the conflict degree between evidences is proposed in the generalized power space, which contains two parameters: the conflict distance and the conflict coefficient of inconsistent evidences. This paper argues that only when the conflict measure value in the new representation model is high, it is safe to say the evidences are in conflict. Experiments illustrate the efficiency of the proposed conflict representation model.