On the realization of credible combination for D-S evidence theory

To improve the reliability of combination evidence in Dempster-Shafer theory, a new method is put forward in this thesis. Different with D-S evidence combination rule, two important parameters are introduced, one is the correlation coefficient between evidences, and another is the reliability of evidence. The combination rule is revised with the two parameters, and then we illustrate the advantage of new method with an example. By increasing the probability evaluation of uncertainty and decreasing the probability evaluation of certainty, the influence of correlative evidence to fusion is weakened. By weighting the evidence with reliability, the negative influence of unreliable evidence is reduced too.