与Lingo使用者讨论一道题目
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model:!3发点4收点运输问题;sets:
warehouses/wh1..wh3/: capacity;
vendors/v1..v4/: demand;
links(warehouses,vendors): cost, volume;endsets!目标函数;
min=@sum(links: cost*volume);!需求约束;
@for(ven ...
2010-4-28 23:08 - ggbod1234 - 计量经济学与统计软件