关键词: 威胁估计, 区间数, 排序, 可能度

Abstract: For the object threat assessment，in which the attribute values and the preference information are in the form of interval numbers，a new method of interval number is proposed.After solving the multi-objective programming of minimizing the total deviation between the alternatives and ideal object，maximizing the total deviation between the alternatives and negative ideal object，and minimizing the maximum deviation between the subjective and objective preference，the weights of the attributes are determined.The priorities of object threat assessment are given by the possibility degree.The example analysis proves the feasibility and practicability of the method.

Key words: threat assessment, interval number, priority, possibility degree