关键词: DS理论, DSm理论, PCR2规则, 自适应信息融合, 证据理论

Abstract: Dempster Shafer Theory(DST) fusion accuracy is higher than Dezert Smarandache Theory(DSmT) under low-conflict conditions, and DSmT fusion accuracy is better than DST under high-conflict conditions. In order to obtain more accurate fusion results, through combining advantages of DST and DSmT, this paper proposes an adaptive information fusion algorithm based on DST and PCR2. The allocation rules under DSmT framework are analyzed, and the rule of PCR2 is selected because of its higher accuracy and lower complexity. Adaptive fusion algorithm is given using PCR2 and DST, PCR2 is employed when there are higher conflicts, and DST is employed when there are lower conflicts. Numerical results show that this algorithm obtains better fusion results and its complexity is between DST and PCR2.

Key words: Dempster Shafer Theory(DST), Dezert Smarandache Theory(DSmT), PCR2 rule, adaptive information fusion, evidence theory