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标题: 请教下大侠们lingo最优解的问题 [打印本页]
作者: coiby    时间: 2010-1-10 14:45
标题: 请教下大侠们lingo最优解的问题
  1. 5 r7 X- v9 K1 b
  2. MODEL:
    * P7 H3 @  b( y/ g; b* q
  3. TITLE 宾馆数目;$ \. {) C% m' }6 D% }/ q7 m: @( \& g7 }
  4. SETS:
    6 Y4 t5 ?8 C1 j' h" J& Y4 [
  5. ROOM/1..32/:price,c,double,x1,x2;9 f& o7 e3 z8 w5 `4 f9 F% p
  6. HOTEL/1..10/:chose;
    . [8 B2 H( Y( _1 Z! ~9 W
  7. LINKS(HOTEL,ROOM):e;* h- ?7 h2 m: V/ g  l
  8. !HOTEL(ROOM,ROOM)/1,2,3,4 5,6,7,8 9,10,11 12,13 14,15,16 17,18,19,20 21,22,23 24,25,26 27,28,29,30 31,32/;
    ) n) m, A/ u  G; [  B& k
  9. ENDSETS
    ( f5 n$ U+ D1 F5 B: m2 s: y: |
  10. DATA:
    7 }4 ]" d. |) W& Q! y6 X& T+ D
  11. price=180 220 180 220 140 160 180 200 150 180 150 140 200 140 160 200 160 170 180 220 150 160 300 180 160 180 260 260 280 280 260 280;7 d6 w% j! g9 v9 }* {' S
  12. c=50 30 30 20 50 35 30 35 50 24 27 50 45 35 35 40 40 40 30 30 50 40 30 40 40 45 30 30 30 30 55 45;
    4 g) z4 S. G* ^& |% z7 D( I
  13. double=1,1,0,0,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,0,0,1,1,0,1,0,1,0,1,1;
    : p" }4 G5 G6 C7 @: r$ X/ ?
  14. e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0! |. R* q8 r: r6 w: K
  15.   0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    1 w; S. G: A- p( o  A9 E1 X1 [
  16.   0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    - |3 J1 g$ @) p
  17.   0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    0 z& Y2 \. K7 S+ |5 d
  18.   0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    , f  O$ l7 o% Z' s
  19.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0
    2 ^6 u9 Q8 d% c5 Y) F, T/ V. i
  20.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0
    ' d2 Q$ L0 `1 C( x5 u8 o% f5 D$ R+ w
  21.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0
    0 D6 q+ v1 z; @3 D
  22.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
    & O/ f5 g! g% E- Q* ^+ y; X
  23.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;
    " G6 p8 D3 o8 ]) ^- D4 z0 e5 T  ]: q
  24. ENDDATA6 d6 Y) {; p# T% {* N' ]
  25. MIN=@SUM(HOTEL:chose);
    ) [" I" M: [/ ]) \# ?
  26. @FOR(LINKS:@BIN(e));& C! ?. j; g+ P6 s4 }6 u0 o/ ^
  27. @FOR(ROOM:@GIN(x1);@GIN(x2));: E7 N  E! [' u7 f# u" a
  28. @FOR(ROOM:c>=x1+x2*double);7 }* P  @- K7 W' C) \5 ~
  29. @SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;, u3 k& S1 }4 t2 v+ F
  30. @SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
    ! t, U( M% ?( t3 T7 A0 Z
  31. @SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;$ @2 t" t5 W- S  i' t0 f% ^
  32. @SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;$ G) A" X9 e# l2 U8 n
  33. @SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;8 {8 n& |7 x# z2 u; K9 R0 A
  34. @SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
    / \5 m$ e: q& e+ G, f
  35. @FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
    $ x3 P1 F: M9 G/ v1 j* I1 `
  36. hotelsum=@SUM(HOTEL:chose);
    7 u9 G+ p2 r7 \! r5 d( H. Z7 m
  37. costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
    9 m/ v# K  k8 c9 I
  38. END' v) H$ }2 f* [1 u3 X* f; Z
复制代码

1 u2 @' T; i- L7 z! T/ n) A1 g) c3 R* W6 V. L; c) t$ H
为什么这个得到的结果反而比这个还差？
) u+ x( a1 e3 Q1 q& |5 y# {3 h# D9 ?0 c; ]# P9 r7 K
  1. ' h9 j% o: Q* t" ~0 V) K. e" }
  2. MODEL:
    6 Z- M* [( W6 P- ~- @  @) \: A
  3. TITLE 宾馆数目;
    - Q- V# T* I: n" B2 v
  4. SETS:( f* {; M( R* `2 Y7 @4 D% t2 K. e
  5. ROOM/1..32/:price,c,double,x1,x2;
    & L, W7 k* m* x: d
  6. HOTEL/1..10/:chose;2 P3 g# S1 F% B# H
  7. LINKS(HOTEL,ROOM):e;
    2 e7 r3 i8 ?1 A/ G7 V; n
  8. !HOTEL(ROOM,ROOM)/1,2,3,4 5,6,7,8 9,10,11 12,13 14,15,16 17,18,19,20 21,22,23 24,25,26 27,28,29,30 31,32/;
    0 D# J# Q* X4 p5 w: N
  9. ENDSETS! H, y. C  j3 T2 t' g, V8 c
  10. DATA:
    3 ?) T5 H/ U$ k
  11. price=180 220 180 220 140 160 180 200 150 180 150 140 200 140 160 200 160 170 180 220 150 160 300 180 160 180 260 260 280 280 260 280;
    8 l7 l# F8 O  b* P
  12. c=50 30 30 20 50 35 30 35 50 24 27 50 45 35 35 40 40 40 30 30 50 40 30 40 40 45 30 30 30 30 55 45;
      o0 q7 K3 |. D) f
  13. double=1,1,0,0,1,1,1,1,1,1,0,1,1,1,1,1,0,1,0,1,1,0,0,1,1,0,1,0,1,0,1,1;
    7 w) Z$ R$ n* Z! c- K
  14. e=1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    7 u: n. G& l  Z' |
  15.   0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    / N/ G) ^2 B7 o- r9 I
  16.   0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0( U( P1 ^: m" D: r4 m3 K% j# N. w  g
  17.   0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    & o8 o- i+ w# v
  18.   0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
    . f7 |( s9 `! @0 y! s- U- m
  19.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,04 P- p" |8 s% V
  20.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0
    3 o# p( c5 k3 j5 i& C
  21.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0
    ! G! Y; {6 j/ d$ z- e4 ^4 P9 O) r
  22.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0
    . n- D/ B- D8 I% [$ _
  23.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1;4 n6 b0 |, f* J; f6 O7 F
  24. ENDDATA
    : A% M% d2 n: K" O
  25. MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));" X" |3 C; R" u& w
  26. @FOR(LINKS:@BIN(e));
    ( W5 A5 g' f" ^& j4 {1 |1 y' a
  27. @FOR(ROOM:@GIN(x1);@GIN(x2));
    5 f0 g! |, c4 ^9 y2 X8 s# z
  28. @FOR(ROOM:c>=x1+x2*double);
    0 Z1 S7 b# T, z
  29. @SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;& t( r& u) b( ~
  30. @SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;/ @" Q9 s# j/ a: W: F
  31. @SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;: Q5 J: M2 E& D/ @5 v
  32. @SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;# D* L1 T) K) h: _. Q2 m# Z6 X  {
  33. @SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;
    ) S, j2 p( K% X
  34. @SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;
    2 q# y9 E- `3 t+ o
  35. @FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
    ( Y6 P& Y4 g% l9 x6 L
  36. hotelsum=@SUM(HOTEL:chose);
    $ G+ g! [2 ~- h0 K* z" v! g
  37. costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
    5 m- w: S+ R/ d; s
  38. END( N2 ]8 L/ |$ H* z5 d( a% w" E2 L
复制代码
作者: juneshumo    时间: 2010-1-22 12:31
这个Lingo代码 好长呀…………拷回去看看…………
作者: juneshumo    时间: 2010-1-22 12:33
最好是 把算法思想 顺便写一下，这样方便别人 充分理解代码…………



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