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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. 7 h$ b0 k+ r6 B. q9 V& h* z7 l
  2. MODEL:
    - T6 B# E  _9 I( I6 f/ X4 t! y% S
  3. TITLE 宾馆数目;
    & Y: c; [; v7 G& V* L0 G/ ~+ {) @& f
  4. SETS:8 ~# o+ D9 `/ M+ R% G9 x" l& ?2 }
  5. ROOM/1..32/:price,c,double,x1,x2;
    - x6 C0 p! g6 C$ H0 V3 M% e
  6. HOTEL/1..10/:chose;
    4 A( g) c$ s$ ~7 z7 i$ t
  7. LINKS(HOTEL,ROOM):e;
    , ?; u# i- p6 B
  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/;, l( Q2 c2 C: D7 Q
  9. ENDSETS$ ^9 u1 W* I% h% ?4 d. U* \: `
  10. DATA:0 Q( J1 X9 J# ?
  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;
    4 K: B. F, k4 U
  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;
    " r# G) ?; w% |3 e& {2 j+ \9 O
  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;, u" o' S( }& _2 a+ H! Q0 ~( ]
  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
    : y+ k+ S  Z" l  k9 J4 X, p
  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
    0 \' Y2 h4 R" Z  n- F% f+ M
  16.   0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,07 B5 V1 \+ Q$ @" u9 [
  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
    # ~. q' [2 L" M( v. J. {
  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# A9 q5 B+ F# ?! c! ]- @% o
  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
    * o) Q" M( M5 Y! Q) G+ [3 o
  20.   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,06 {, y1 a5 ~, o+ I0 p  k9 V
  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, n6 P* ~. b! F
  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
    * l# z4 g1 J: @
  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;
    % A  {' K. G+ k, o! Q
  24. ENDDATA
    2 M- M  g( m2 G8 e. n
  25. MIN=@SUM(HOTEL:chose);. }5 [. S; [) D
  26. @FOR(LINKS:@BIN(e));. {/ L* r3 S- N
  27. @FOR(ROOM:@GIN(x1);@GIN(x2));" U9 {) Q/ U# U9 K
  28. @FOR(ROOM:c>=x1+x2*double);
    2 `" V' R! R+ _# C; c- T
  29. @SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
    * D1 J# _0 R& d- M- h
  30. @SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;
    1 h/ {$ C7 B+ K" ~- K! A  d2 Z. L
  31. @SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;
    8 P) G$ R/ }# k
  32. @SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;" A$ N/ q5 X* R" t' y: ?
  33. @SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;: c+ R" u% J7 \# p
  34. @SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;* [: `1 U, I2 V3 e% P1 {
  35. @FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));
    1 j6 e5 F9 `: R
  36. hotelsum=@SUM(HOTEL:chose);) }) `* P  ?% \' z' @+ m
  37. costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));* p, y$ E4 P( L. M
  38. END
    2 W+ [7 S) J; H# y. f
复制代码
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为什么这个得到的结果反而比这个还差？
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$ w2 r' a+ s( y; W" b
  1. 7 Z5 |- S5 m! h) i! l
  2. MODEL:
    7 T- ^( G% L8 h. @; ~
  3. TITLE 宾馆数目;
    & Z9 n% \3 h- H: e! b: T! e' T
  4. SETS:% Z! Z( p$ S5 f0 p  V: _
  5. ROOM/1..32/:price,c,double,x1,x2;6 z% [! F/ y8 D$ k) N
  6. HOTEL/1..10/:chose;2 f* V8 o- C& b5 A' R! ^
  7. LINKS(HOTEL,ROOM):e;
    1 F% M8 v4 r$ g: W. {
  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/;" g5 H4 ~% l' _, G/ R
  9. ENDSETS
    - |( U! w8 ]/ q0 c* u5 v* a
  10. DATA:( ?$ \& b* s: Z0 V2 @# n* Z
  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;
    ; s- w7 r5 F( a" N9 j
  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;
    : ?7 I2 P" o+ @/ P3 \3 p, u
  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;9 d8 d! E5 g- `- r8 \3 J6 e; n
  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
    ! @3 c7 |; c; C% W1 p& H- T* }
  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# M0 I- A0 F5 b& t& [/ }- |- e
  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. M& l4 ~5 k2 k$ i5 Y
  17.   0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,09 t3 z6 ~1 O0 ]( k) i/ Z& }
  18.   0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,04 Y) }$ K8 `6 A4 Q- a5 h
  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
    ! n" d7 \7 ~. Z/ b  W
  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' F, Z9 Y: @: k
  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) ~2 B" W3 `6 s4 K( D* 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
    - ^' ~% D: ~( y% I; g  Z% p
  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;. C. W4 Q3 R2 t* ]3 X& _9 K; s
  24. ENDDATA
    ; j1 R( Y: S$ a( K( k3 k1 _+ c7 v
  25. MIN=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));
    ) X! \9 [- k' O. J- i) l
  26. @FOR(LINKS:@BIN(e));
    / p# j% P9 s5 o% H
  27. @FOR(ROOM:@GIN(x1);@GIN(x2));
    # v# r" D. R: r' ~9 |' T4 M. T
  28. @FOR(ROOM:c>=x1+x2*double);
    $ r* n+ Q3 a; t# U& X
  29. @SUM(ROOM|price#GT#120 #and# price#LT#160:x1)>=146;
    0 t: B1 P! @* x& e3 N- N3 b
  30. @SUM(ROOM|price#GT#161 #and# price#LT#200:x1)>=85;% V* i; Z" e  `
  31. @SUM(ROOM|price#GT#201 #and# price#LT#300:x1)>=53;% N/ e& ]' M3 T+ t9 z8 z! j
  32. @SUM(ROOM|price#GT#120 #and# price#LT#160:x2*double*2)>=203;
    6 j& @) c  N( W3 I3 F# E
  33. @SUM(ROOM|price#GT#161 #and# price#LT#200:x2*double*2)>=133;1 G8 i. F9 I/ d6 l9 |  V4 j9 y4 }
  34. @SUM(ROOM|price#GT#201 #and# price#LT#300:x2*double*2)>=43;+ `2 ^& C% J+ H, r, y
  35. @FOR(HOTEL(K):chose=@IF(@SUM(ROOM(I):e(K,I)*(x1(I)+double(I)*x2(I)))#GE#1,1,0));4 H# d9 F% s. S/ A1 o
  36. hotelsum=@SUM(HOTEL:chose);) }( W' n7 B! y" M) f3 M6 _
  37. costall=@SUM(ROOM(i):((x1(i)+x2(i)*double(i))*price(i)));. B* c2 ?( \# h! n6 S
  38. END- T- H# Z7 B& H! c7 e2 e9 x( K  d# I- q
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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