中文摘要：

通过在分别以决策后果的上概率和下概率作为上、下界构成的区间数上定义“可能性小于”关系，将决策后果空间格序化，然后应用带概率分布的区间数的比较方法，研究了多值映射后果空间上的格序决策方法．最后作为应用研究，给出了格序决策中的一个算例．

英文摘要：

The definition, probability less than, is given to compare interval numbers with the upper and lower probability as two endpoints on outcome spaces, then the outcome space of decision-making problem can be lattice-ordered, and interval number with probability distribution and its corresponding ranking approach are used in order to devise the mathod for lattice-order decision-making. At last, an applied example in lattice-order decision-making is given to show that it is logical and effective.