DST (Dempster-Shafer theory) involves some counter-intuitive behaviors when multiple evidences conflict highly. DSmT (Dezert-smarandache theory) can solve this problem. Under increment of focal target elements, high computation cost has blocked the wide application of DSmT. To solve this problem, some modified combination rules have been proposed in literature. In this study, an adaptive integration method based on DST and DSmT was presented. To make a reasonable choice, a parameter measuring conflict degree called evidence distance is defined to determine. Threshold value is evaluated by product of conflicting factor and evidence distance. When conflict is smaller than the threshold value, DST is used to fuse. While conflict is larger, DSmT is used to fuse until the conflicting rate value is smaller than the threshold value. To illustrate effectiveness and good performance of new method, some methods are compared. Reliable result with low cost computation can be obtained by new method. Results indicate that this method can highlight the effectiveness of fusion. It synthesizes merits of DST and DSmT. New method is more reasonable than others.
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