Submitter | Variables | Constraints | Density | Status | Group | Objective | MPS File |
---|---|---|---|---|---|---|---|
MIPLIB submission pool | 6971 | 2088 | 1.42469e-03 | hard | network_design | 628490 | germany50-UUM.mps.gz |
Imported from the MIPLIB2010 submissions.
Detailed explanation of the following tables can be found here.
Original | Presolved | |
---|---|---|
Variables | 6971 | 6971 |
Constraints | 2088 | 2088 |
Binaries | 0 | 0 |
Integers | 88 | 88 |
Continuous | 6883 | 6883 |
Implicit Integers | 0 | 0 |
Fixed Variables | 0 | 0 |
Nonzero Density | 0.00142469 | 0.00142469 |
Nonzeroes | 20737 | 20737 |
Original | Presolved | |
---|---|---|
Total | 2088 | 2088 |
Empty | 0 | 0 |
Free | 0 | 0 |
Singleton | 0 | 0 |
Aggregations | 8 | 8 |
Precedence | 0 | 0 |
Variable Bound | 0 | 0 |
Set Partitioning | 0 | 0 |
Set Packing | 0 | 0 |
Set Covering | 0 | 0 |
Cardinality | 0 | 0 |
Invariant Knapsack | 0 | 0 |
Equation Knapsack | 0 | 0 |
Bin Packing | 0 | 0 |
Knapsack | 0 | 0 |
Integer Knapsack | 0 | 0 |
Mixed Binary | 1992 | 1992 |
General Linear | 88 | 88 |
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 | 1.612784 | ||||
Constraint % | 2.39464 | 2.39464 | 2.39464 | 2.39464 | |
Variable % | 2.39564 | 2.46844 | 2.46736 | 2.49606 | |
Score | 0.934210 |
Find solutions below. Download the archive containing all solutions from the Download page.
## Warning in lapply(df["exactobjval"], as.numeric): NAs introduced by coercion
ID | Objective | Exact | Int. Viol | Cons. Viol | Obj. Viol | Submitter | Date | Description |
---|---|---|---|---|---|---|---|---|
3 | 628490 | 628490 | 0 | 0 | 0 | Hans Mittelmann | 2021-12-02 | Solved with Gurobi 9.5.0rc5 using 80 threads in 37 hours. |
2 | 628490 | 0 | 0 | 0 | Robert Ashford and Alkis Vazacopoulus | 2019-12-18 | Found using ODH|CPlex | |
1 | 628920 | 628920 | 0 | 0 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |
The following instances are most similar to germany50-UUM 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 |
---|---|---|---|---|---|---|---|---|---|---|---|
neos-1420790 | open | 4926 | 540 | 0 | 4386 | 2310 | 12720 | NEOS Server Submission | neos-pseudoapplication-9 | 3119.806001594* | decomposition set_partitioning mixed_binary |
neos-1420546 | open | 26055 | 1125 | 0 | 24930 | 12671 | 67959 | NEOS Server Submission | neos-pseudoapplication-9 | 22948.10433777* | decomposition set_partitioning mixed_binary |
neos-3665875-lesum | easy | 3128 | 320 | 0 | 2808 | 3184 | 10640 | Jeff Linderoth | neos-pseudoapplication-9 | 3274.81 | benchmark_suitable set_covering invariant_knapsack mixed_binary |
zeil | open | 70116 | 5314 | 0 | 64802 | 81558 | 1628941 | Andreas Bärmann | – | 1081.358500000008* | precedence variable_bound mixed_binary |
neos-3660371-kurow | easy | 4722 | 144 | 0 | 4578 | 4758 | 12912 | Jeff Linderoth | neos-pseudoapplication-9 | 2270.85 | benchmark_suitable aggregations precedence variable_bound set_partitioning invariant_knapsack mixed_binary general_linear |
No bibliographic information available