Lingo案例分析.doc

最小费用运输问题单位销地运价产地B1B2B3B4B5B6B7B8产量A**********A24953858255A35219743351A47673927143A52395726541A65522814352销量3537223241324338280/302 : model:!6发点8收点运输问题;sets:warehouses/wh1..wh6/:capacity;vendors/v1..v8/:demand;links(warehouses,vendors):cost,volume;endsets!目标函数;min=***@sum(links:cost*volume);!需求约束;***@for(vendors(J):***@sum(warehouses(I):volume(I,J))=demand(J));!产量约束;***@for(warehouses(I):***@sum(vendors(J):volume(I,J))<=capacity(I)); !这里是数据;data:capacity=605551434152;demand=3537223241324338;cost=626742954953858252197433767392712395726555228143;,,:(includingthecolon),,asinglesetssection,',youspecify:thenameoftheset,optionally,itsmembers(objectscontainedintheset),andoptionally,:setname[/member_list/][:attribute_list];Whenusingimplicitsetmemberlists,:setname/member1..memberN/[:attribute_list];,:ImplicitMemberListFormatExampleSetMembers1..n1..51,2,3,4,5stringM..stringN TRUCKS3..TRUCKS204TRUCK3,TRUCK4,...,TRUCK204dayM..dayNMON..FRIMON,TUE,WED,THU,FRImonthM..monthNOCT..JANOCT,NOV,DEC,JANmonthYearM..monthYearNOCT2001..JAN2002OCT2001,NOV2001,DEC2001,JAN2002