LBPMOLL test problems

Linear bilevel problems with multiple objective functions at the lower level: data of test instances. These instances have 2 objective functions at the lower-level, 5 or 10 upper-level variables, 10 to 50 lower-level variables, 10-50 constraints.下层包含多目标函数的线性双层规划问题（Linear bilevel problems）：测试实例数据集。此类测试实例的下层均设有2个目标函数，上层决策变量数量为5或10，下层决策变量数量为10至50，约束条件数量为10到50。