LINGO sets:product /1..7/:capcity,value;need /1..14/:demand;link(product,need):cost,number;endsetsmin=@sum(link:cost*number)+@sum(product(i):value(i)*@sum(need(j):number(i,j)));@for(link(i,j):@sum(link(i,j):number(i,j))=5171);@for(product(1):@sum(nee

lingo中sets是什么? lingo下标的问题比如：sets:product/0,1,2,3,4,5,6,7/:m;endsets那么我在调用 m(0)为什么说我下标越界? lingo程序：model：sets：product/1..3/:a,b; row/1..5/:c,d,y; num/1..9/:x; endsets其中的product和num该怎么用?还有平时不是用的col么而不是num区别在哪? LINGO程序问题sets:product /1..7/:capcity,value;need /1..14/:demand;link(product,need):cost,number;endsetsmin=@sum(link:cost*number)+@sum(product(i):value(i)*@sum(need(j):number(i,j));@for(link(i,j):@sum(link(i,j):number(i,j)=5171));@for(product(1 LINGO sets:product /1..7/:capcity,value;need /1..14/:demand;link(product,need):cost,number;endsetsmin=@sum(link:cost*number)+@sum(product(i):value(i)*@sum(need(j):number(i,j)));@for(link(i,j):@sum(link(i,j):number(i,j))=5171);@for(product(1):@sum(nee lingo运行时出现improper use of set name!MODEL:建立集合;SETS:Three products; PRODUCT/A,B,C/;Two distctrs; DISTCTR/DCl,DC2/;F;Five customers; CUSTOMER/C1,C2,C3,C4,C5/; D=Demand for a product by a customer．; DEMLINK(PRODUCT,CUSTOMER):D; Each lingo for函数出错 sets:SUPPLY/s1 s2/;FACTORY/F1 F2/;DISTRIBUTION/D1 D2/;CUSTOMER/C1 C2/;MATERIAL/M1 M2 M3/;PRODUCT/P1/;TIME/T1 T2 T3 T4 T5/;SM_LINK(TIME,SUPPLY,MATERIAL):SMC,SMQ;FP_LINK(TIME,FACTORY,PRODUCT):FPc,FPQ;SFM_T_LINK(TIME,SUPPLY,FACTORY lingo sets中可以由已知数 和 未知数组成吗?例如 sets zuobio/1..22/:x,y; endsets 前20个已知,怎么写 product product lingo 关于and的用法sets:jishu/1..n/:x,h,y;endsets当i>1且i lingo中sets;xs/1,2,3,4,5/:alpha,nu,beta,gamma,pi,sigma;代表什么意思 LINGO中的目标函数的表示若已知条件model：sets：a/1..5/:q;b/1..10/:y;c(a,b):x;endsets若要表示的目标函数为：该如何在lingo中表示出来? 关于LINGO程序lingo程序如下：sets：a/1..5/:x; endsets data:x=1,2,3,4,5;enddata 若知道a(i):x(i)=5,如何写出程序求出i的值 LINGO中的目标函数的表示方法若已知model：sets：a/1..5/:q;b/1..10/:y;c(a,b):x;endsets若要表示的目标函数为：该如何在lingo中表示出来? 求以下公式lingo代码： 定义集为：sets: demand/1..8/:O,D; supply/1..14/:Y; link(demand,supply):w,c,di,z;endsets lingo @for中大于用什么表示 @FOR(product(J)|W(J)>0:SUM(WORKER(I):X(I,J))=1); W(J)>0 要怎样表示 一个lingo lingo中约束条件之间是 ‘或’ 的关系,应该如何表示?Lingo中是否允许?代码如下,就是最后一个循环出错,去掉后可以执行,最后一句错在哪?P是火车票价格;model:sets:citys/1..10/:;city/1..11/:u,t