Submitter | Variables | Constraints | Density | Status | Group | Objective | MPS File |
---|---|---|---|---|---|---|---|
MIPLIB submission pool | 1796 | 2527 | 1.56396e-03 | easy | – | 400 | railway_8_1_0.mps.gz |
Imported from the MIPLIB2010 submissions.
Detailed explanation of the following tables can be found here.
Original | Presolved | |
---|---|---|
Variables | 1796 | 1795 |
Constraints | 2527 | 2526 |
Binaries | 1177 | 1177 |
Integers | 0 | 0 |
Continuous | 619 | 618 |
Implicit Integers | 0 | 0 |
Fixed Variables | 0 | 0 |
Nonzero Density | 0.00156396 | 0.00156523 |
Nonzeroes | 7098 | 7097 |
Original | Presolved | |
---|---|---|
Total | 2527 | 2526 |
Empty | 0 | 0 |
Free | 0 | 0 |
Singleton | 1 | 0 |
Aggregations | 0 | 0 |
Precedence | 1026 | 1026 |
Variable Bound | 0 | 0 |
Set Partitioning | 0 | 0 |
Set Packing | 0 | 0 |
Set Covering | 426 | 0 |
Cardinality | 0 | 0 |
Invariant Knapsack | 0 | 426 |
Equation Knapsack | 0 | 0 |
Bin Packing | 0 | 0 |
Knapsack | 0 | 0 |
Integer Knapsack | 0 | 0 |
Mixed Binary | 1074 | 1074 |
General Linear | 0 | 0 |
Indicator | 0 | 0 |
Available nonzero structure and decomposition information. Further information can be found here.
Decomposed structure of original problem (dec-file)
Decomposed structure after trivial presolving (dec-file)
value | min | median | mean | max | |
---|---|---|---|---|---|
Components | 0.4771212 | ||||
Constraint % | 41.3698 | 41.5677 | 41.5677 | 41.7656 | |
Variable % | 46.8263 | 47.1047 | 47.1047 | 47.3831 | |
Score | 0.4397360 |
Find solutions below. Download the archive containing all solutions from the Download page.
ID | Objective | Exact | Int. Viol | Cons. Viol | Obj. Viol | Submitter | Date | Description |
---|---|---|---|---|---|---|---|---|
1 | 400 | 400 | 0 | 0 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |
The following instances are most similar to railway_8_1_0 in the collection. This similarity analysis is based on 100 scaled instance features describing properties of the variables, objective function, bounds, constraints, and right hand sides.
Instance | Status | Variables | Binaries | Integers | Continuous | Constraints | Nonz. | Submitter | Group | Objective | Tags |
---|---|---|---|---|---|---|---|---|---|---|---|
berlin_5_8_0 | easy | 1083 | 794 | 0 | 289 | 1532 | 4507 | G. Klau | – | 62 | precedence invariant_knapsack mixed_binary |
CMS750_4 | easy | 11697 | 7196 | 0 | 4501 | 16381 | 44903 | MIPLIB submission pool | – | 252 | benchmark benchmark_suitable precedence invariant_knapsack mixed_binary |
usAbbrv-8-25_70 | hard | 2312 | 1681 | 0 | 631 | 3291 | 9628 | publicly available | – | 120 | precedence invariant_knapsack knapsack mixed_binary |
pigeon-16 | easy | 1072 | 928 | 0 | 144 | 2353 | 21104 | Sam Allen | pigeon | -15000 | benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary |
pigeon-20 | easy | 1580 | 1400 | 0 | 180 | 3661 | 33100 | Sam Allen | pigeon | -19000 | benchmark_suitable set_partitioning cardinality invariant_knapsack mixed_binary |
No bibliographic information available