Combination of Conflict Evidences in D-S Theory

D-S combination rule and other modified methods are defective in resolving evidence combination problem of highly conflict evidences. So we propose a new modified method. The new method still uses the D-S combination rule. All evidences must have the same important degree when they are combined with D-S combination rule. In practice, evidences may have different important degree so we maybe get paradoxical result if we directly combine these evidences. Therefore we introduce a concept of evidence weight and give the concrete algorithm for the evidence weight. Then new evidences with the same evidence weight can be got by modifying the basic belief assignment function of primary evidences through the algorithm to the evidence weight. Finally, an example indicates that the new method can give the more reasonable combination results compared with D-S combination rule and the other modified methods.