When the near-optimal solution of the BLP problem is used as the reference point for finding the efficient solution, the result can be easily found during the decision process.

• 针对两层线性规划问题解的无效性，在决策者合作情形下，利用双准则线性规划的有关技术，提出事先不需求解问题而是采用次最优解作为参考点，直接在目标集中搜索有效满意解的方法。