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Apply a binary fixing heuristic to an unpresolved MIP problem Description We take a production plan model and solve its LP relaxation. This heuristic will speed up solution - though may fail to optimse the problem. The results are displayed on screen and the problem statistics stored in a log file.
Source Files By clicking on a file name, a preview is opened at the bottom of this page.
Data Files coco.mps
NAME COCO
ROWS
N MaxProfi
E PBal_111
E PBal_112
E PBal_113
E PBal_114
E PBal_121
E PBal_122
E PBal_123
E PBal_124
E PBal_211
E PBal_212
E PBal_213
E PBal_214
E PBal_221
E PBal_222
E PBal_223
E PBal_224
E RBal_111
E RBal_112
E RBal_113
E RBal_114
E RBal_121
E RBal_122
E RBal_123
E RBal_124
E RBal_211
E RBal_212
E RBal_213
E RBal_214
E RBal_221
E RBal_222
E RBal_223
E RBal_224
L MxSe0101
L MxSe0102
L MxSe0103
L MxSe0104
L MxSe0201
L MxSe0202
L MxSe0203
L MxSe0204
L MxMa0101
L MxMa0102
L MxMa0103
L MxMa0104
L MxMa0201
L MxMa0202
L MxMa0203
L MxMa0204
L MxRS0102
L MxRS0103
L MxRS0104
L MxRS0105
L MxRS0202
L MxRS0203
L MxRS0204
L MxRS0205
L Clos0101
L Clos0102
L Clos0103
L Clos0201
L Clos0202
L Clos0203
COLUMNS
make_111 MaxProfi -150.000000 PBal_111 -1.000000
make_111 RBal_111 1.000000 RBal_211 .500000
make_111 MxMa0101 1.000000
make_211 MaxProfi -75.000000 PBal_211 -1.000000
make_211 RBal_111 1.300000 RBal_211 .400000
make_211 MxMa0101 1.000000
make_121 MaxProfi -153.000000 PBal_121 -1.000000
make_121 RBal_121 1.000000 RBal_221 .500000
make_121 MxMa0201 1.000000
make_221 MaxProfi -68.000000 PBal_221 -1.000000
make_221 RBal_121 1.300000 RBal_221 .400000
make_221 MxMa0201 1.000000
make_112 MaxProfi -150.000000 PBal_112 -1.000000
make_112 RBal_112 1.000000 RBal_212 .500000
make_112 MxMa0102 1.000000
make_212 MaxProfi -75.000000 PBal_212 -1.000000
make_212 RBal_112 1.300000 RBal_212 .400000
make_212 MxMa0102 1.000000
make_122 MaxProfi -153.000000 PBal_122 -1.000000
make_122 RBal_122 1.000000 RBal_222 .500000
make_122 MxMa0202 1.000000
make_222 MaxProfi -68.000000 PBal_222 -1.000000
make_222 RBal_122 1.300000 RBal_222 .400000
make_222 MxMa0202 1.000000
make_113 MaxProfi -150.000000 PBal_113 -1.000000
make_113 RBal_113 1.000000 RBal_213 .500000
make_113 MxMa0103 1.000000
make_213 MaxProfi -75.000000 PBal_213 -1.000000
make_213 RBal_113 1.300000 RBal_213 .400000
make_213 MxMa0103 1.000000
make_123 MaxProfi -153.000000 PBal_123 -1.000000
make_123 RBal_123 1.000000 RBal_223 .500000
make_123 MxMa0203 1.000000
make_223 MaxProfi -68.000000 PBal_223 -1.000000
make_223 RBal_123 1.300000 RBal_223 .400000
make_223 MxMa0203 1.000000
make_114 MaxProfi -150.000000 PBal_114 -1.000000
make_114 RBal_114 1.000000 RBal_214 .500000
make_114 MxMa0104 1.000000
make_214 MaxProfi -75.000000 PBal_214 -1.000000
make_214 RBal_114 1.300000 RBal_214 .400000
make_214 MxMa0104 1.000000
make_124 MaxProfi -153.000000 PBal_124 -1.000000
make_124 RBal_124 1.000000 RBal_224 .500000
make_124 MxMa0204 1.000000
make_224 MaxProfi -68.000000 PBal_224 -1.000000
make_224 RBal_124 1.300000 RBal_224 .400000
make_224 MxMa0204 1.000000
sell_111 MaxProfi 400.000000 PBal_111 1.000000
sell_111 MxSe0101 1.000000
sell_211 MaxProfi 410.000000 PBal_211 1.000000
sell_211 MxSe0201 1.000000
sell_121 MaxProfi 400.000000 PBal_121 1.000000
sell_121 MxSe0101 1.000000
sell_221 MaxProfi 410.000000 PBal_221 1.000000
sell_221 MxSe0201 1.000000
sell_112 MaxProfi 380.000000 PBal_112 1.000000
sell_112 MxSe0102 1.000000
sell_212 MaxProfi 397.000000 PBal_212 1.000000
sell_212 MxSe0202 1.000000
sell_122 MaxProfi 380.000000 PBal_122 1.000000
sell_122 MxSe0102 1.000000
sell_222 MaxProfi 397.000000 PBal_222 1.000000
sell_222 MxSe0202 1.000000
sell_113 MaxProfi 405.000000 PBal_113 1.000000
sell_113 MxSe0103 1.000000
sell_213 MaxProfi 412.000000 PBal_213 1.000000
sell_213 MxSe0203 1.000000
sell_123 MaxProfi 405.000000 PBal_123 1.000000
sell_123 MxSe0103 1.000000
sell_223 MaxProfi 412.000000 PBal_223 1.000000
sell_223 MxSe0203 1.000000
sell_114 MaxProfi 350.000000 PBal_114 1.000000
sell_114 MxSe0104 1.000000
sell_214 MaxProfi 397.000000 PBal_214 1.000000
sell_214 MxSe0204 1.000000
sell_124 MaxProfi 350.000000 PBal_124 1.000000
sell_124 MxSe0104 1.000000
sell_224 MaxProfi 397.000000 PBal_224 1.000000
sell_224 MxSe0204 1.000000
buy__111 MaxProfi -100.000000 RBal_111 -1.000000
buy__211 MaxProfi -200.000000 RBal_211 -1.000000
buy__121 MaxProfi -100.000000 RBal_121 -1.000000
buy__221 MaxProfi -200.000000 RBal_221 -1.000000
buy__112 MaxProfi -98.000000 RBal_112 -1.000000
buy__212 MaxProfi -195.000000 RBal_212 -1.000000
buy__122 MaxProfi -98.000000 RBal_122 -1.000000
buy__222 MaxProfi -195.000000 RBal_222 -1.000000
buy__113 MaxProfi -97.000000 RBal_113 -1.000000
buy__213 MaxProfi -198.000000 RBal_213 -1.000000
buy__123 MaxProfi -97.000000 RBal_123 -1.000000
buy__223 MaxProfi -198.000000 RBal_223 -1.000000
buy__114 MaxProfi -100.000000 RBal_114 -1.000000
buy__214 MaxProfi -200.000000 RBal_214 -1.000000
buy__124 MaxProfi -100.000000 RBal_124 -1.000000
buy__224 MaxProfi -200.000000 RBal_224 -1.000000
pstoc111 PBal_111 -1.000000
pstoc211 PBal_211 -1.000000
pstoc121 PBal_121 -1.000000
pstoc221 PBal_221 -1.000000
pstoc112 MaxProfi -2.000000 PBal_111 1.000000
pstoc112 PBal_112 -1.000000
pstoc212 MaxProfi -2.000000 PBal_211 1.000000
pstoc212 PBal_212 -1.000000
pstoc122 MaxProfi -2.000000 PBal_121 1.000000
pstoc122 PBal_122 -1.000000
pstoc222 MaxProfi -2.000000 PBal_221 1.000000
pstoc222 PBal_222 -1.000000
pstoc113 MaxProfi -2.000000 PBal_112 1.000000
pstoc113 PBal_113 -1.000000
pstoc213 MaxProfi -2.000000 PBal_212 1.000000
pstoc213 PBal_213 -1.000000
pstoc123 MaxProfi -2.000000 PBal_122 1.000000
pstoc123 PBal_123 -1.000000
pstoc223 MaxProfi -2.000000 PBal_222 1.000000
pstoc223 PBal_223 -1.000000
pstoc114 MaxProfi -2.000000 PBal_113 1.000000
pstoc114 PBal_114 -1.000000
pstoc214 MaxProfi -2.000000 PBal_213 1.000000
pstoc214 PBal_214 -1.000000
pstoc124 MaxProfi -2.000000 PBal_123 1.000000
pstoc124 PBal_124 -1.000000
pstoc224 MaxProfi -2.000000 PBal_223 1.000000
pstoc224 PBal_224 -1.000000
pstoc115 MaxProfi -2.000000 PBal_114 1.000000
pstoc215 MaxProfi -2.000000 PBal_214 1.000000
pstoc125 MaxProfi -2.000000 PBal_124 1.000000
pstoc225 MaxProfi -2.000000 PBal_224 1.000000
rstoc111 RBal_111 -1.000000
rstoc211 RBal_211 -1.000000
rstoc121 RBal_121 -1.000000
rstoc221 RBal_221 -1.000000
rstoc112 MaxProfi -1.000000 RBal_111 1.000000
rstoc112 RBal_112 -1.000000 MxRS0102 1.000000
rstoc212 MaxProfi -1.000000 RBal_211 1.000000
rstoc212 RBal_212 -1.000000 MxRS0102 1.000000
rstoc122 MaxProfi -1.000000 RBal_121 1.000000
rstoc122 RBal_122 -1.000000 MxRS0202 1.000000
rstoc222 MaxProfi -1.000000 RBal_221 1.000000
rstoc222 RBal_222 -1.000000 MxRS0202 1.000000
rstoc113 MaxProfi -1.000000 RBal_112 1.000000
rstoc113 RBal_113 -1.000000 MxRS0103 1.000000
rstoc213 MaxProfi -1.000000 RBal_212 1.000000
rstoc213 RBal_213 -1.000000 MxRS0103 1.000000
rstoc123 MaxProfi -1.000000 RBal_122 1.000000
rstoc123 RBal_123 -1.000000 MxRS0203 1.000000
rstoc223 MaxProfi -1.000000 RBal_222 1.000000
rstoc223 RBal_223 -1.000000 MxRS0203 1.000000
rstoc114 MaxProfi -1.000000 RBal_113 1.000000
rstoc114 RBal_114 -1.000000 MxRS0104 1.000000
rstoc214 MaxProfi -1.000000 RBal_213 1.000000
rstoc214 RBal_214 -1.000000 MxRS0104 1.000000
rstoc124 MaxProfi -1.000000 RBal_123 1.000000
rstoc124 RBal_124 -1.000000 MxRS0204 1.000000
rstoc224 MaxProfi -1.000000 RBal_223 1.000000
rstoc224 RBal_224 -1.000000 MxRS0204 1.000000
rstoc115 MaxProfi -1.000000 RBal_114 1.000000
rstoc115 MxRS0105 1.000000
rstoc215 MaxProfi -1.000000 RBal_214 1.000000
rstoc215 MxRS0105 1.000000
rstoc125 MaxProfi -1.000000 RBal_124 1.000000
rstoc125 MxRS0205 1.000000
rstoc225 MaxProfi -1.000000 RBal_224 1.000000
rstoc225 MxRS0205 1.000000
open0101 MaxProfi -50000.00000 MxMa0101 -400.000000
open0101 Clos0101 -1.000000
open0201 MaxProfi -63000.00000 MxMa0201 -500.000000
open0201 Clos0201 -1.000000
open0102 MaxProfi -50000.00000 MxMa0102 -400.000000
open0102 Clos0101 1.000000 Clos0102 -1.000000
open0202 MaxProfi -63000.00000 MxMa0202 -500.000000
open0202 Clos0201 1.000000 Clos0202 -1.000000
open0103 MaxProfi -50000.00000 MxMa0103 -400.000000
open0103 Clos0102 1.000000 Clos0103 -1.000000
open0203 MaxProfi -63000.00000 MxMa0203 -500.000000
open0203 Clos0202 1.000000 Clos0203 -1.000000
open0104 MaxProfi -50000.00000 MxMa0104 -400.000000
open0104 Clos0103 1.000000
open0204 MaxProfi -63000.00000 MxMa0204 -500.000000
open0204 Clos0203 1.000000
RHS
RHS00001 MxSe0101 650.000000 MxSe0102 600.000000
RHS00001 MxSe0103 500.000000 MxSe0104 400.000000
RHS00001 MxSe0201 600.000000 MxSe0202 500.000000
RHS00001 MxSe0203 300.000000 MxSe0204 250.000000
RHS00001 MxRS0102 300.000000 MxRS0103 300.000000
RHS00001 MxRS0104 300.000000 MxRS0105 300.000000
RHS00001 MxRS0202 300.000000 MxRS0203 300.000000
RHS00001 MxRS0204 300.000000 MxRS0205 300.000000
BOUNDS
FX BOUND001 pstoc111 50.000000
FX BOUND001 pstoc211 50.000000
FX BOUND001 pstoc121 100.000000
FX BOUND001 pstoc221 50.000000
FX BOUND001 rstoc111 100.000000
FX BOUND001 rstoc211 50.000000
FX BOUND001 rstoc121 150.000000
FX BOUND001 rstoc221 100.000000
BV BOUND001 open0101
BV BOUND001 open0201
BV BOUND001 open0102
BV BOUND001 open0202
BV BOUND001 open0103
BV BOUND001 open0203
BV BOUND001 open0104
BV BOUND001 open0204
ENDATA
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