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标题: Lingo建模语言与实例4 [打印本页]

作者: longde    时间: 2015-7-22 15:26
标题: Lingo建模语言与实例4
目标与约束段- }+ Y% N+ [" O
集合段(SETS    ENDSETS)
6 N2 W/ V. B; V数据段(DATA   ENDDATA)" z0 U9 K0 j3 I& D  G
初始段(INIT  ENDINIT)
: J  l& q" k: `9 c+ Y(计算段 (CALC ENDCALC))$ l6 u" m4 y8 b6 O6 c' L( \
MODEL:9 o0 U# G* T' ]
Title Location Problem;
  l5 c7 K0 i) ~; O, [sets:
# z7 O8 a& O' X. i. G7 K9 S    demand/1..6/:a,b,d;
2 e' ]  ?8 m# u' P6 a    supply/1..2/:x,y,e;
& A. ^6 c6 |) @% x4 S9 |6 e+ Y- u    link(demand,supply):c;2 A. |% ?. _: Z" `8 |, R, K
endsets, D( q) e9 _8 L4 d* Y% m- M
data:
4 C) k( x4 B8 P/ {a=1.25,8.75,0.5,5.75,3,7.25; - O8 ]: O& H1 u) m; [0 ^/ B
b=1.25,0.75,4.75,5,6.5,7.75;
5 a/ o+ h6 Y/ u. W& G  Pd=3,5,4,7,6,11; e=20,20;' Q3 j4 n7 }; E$ B& R0 u' I2 }
enddata
3 N: d) @" _' a( |init:/ r5 Q& h5 s2 Q, w5 O
x,y=5,1,2,7;
( V( |4 O5 I; a2 |$ W; Mendinit1 R9 [, B/ L5 r$ z/ O
min=@sum(link(i,j):c(i,j)*((x(j)-a(i))^2+(y(j)-b(i))^2)^(1/2));, h4 `, U' [/ {! N4 d% I/ `) I- _
@for(demand(i)sum(supply(j):c(i,j))=d(i);); 3 _6 E, A! g; w# K; |8 c( N
@for(supply(i)sum(demand(j):c(j,i))<=e(i););2 E- l, M3 K) H1 B3 `& q
END
7 b$ V, j& U- ?! t/ n* q6 R. y6 T
作者: longde    时间: 2015-7-22 15:26
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