中文摘要：

针对后勤装备采购时所获取的指标信息具有不完备性、不确定性及不可靠性问题，采用基于区间数TOPSIS法对采购决策方案进行评估。建立科研试验后勤装备采购决策方案评估的指标体系，给出了区间数形式的评估指标值的规范化方法以及指标权重的计算方法；建立了区间数TOPSIS法评估采购决策方案的数学模型，并对实例中的决策方案进行排序。实例结果表明：该方法是有效、实用的，在后勤装备采购决策中具有较高的使用价值。

英文摘要：

Because the information of index in procurement of logistic equipment has disadvantages of incomplete, uncertainty, and unreliability. A method of evaluation of the procurement decision plan based on interval numbers TOPSIS is proposed. First, the index system for procurement decision of logistic equipment is established, a standardization approach to the index value of evaluating in the form of interval numbers is presented and the calculation steps for solving the index weight are given. Then, the mathematics model for evaluating the procurement decision plan of logistic equipment by interval numbers TOPSIS is established. Finally, a numerical example of evaluating the procurement decision plan of test logistic equipment is given to show the rationality and effectiveness of the method.