Submitter | Variables | Constraints | Density | Status | Group | Objective | MPS File |
---|---|---|---|---|---|---|---|
D. Panton | 6805 | 884 | 5.81237e-03 | hard | swath | 467.407491 | swath.mps.gz |
Model arising from the defense industry, involves planning missions for radar surveillance. John Forrest and Laszlo Ladanyi solved this instance by reformulation in 1999. Alkis Vazacopoulos reports solving this instance using XPRESS 2006B. Imported from MIPLIB2010.
Detailed explanation of the following tables can be found here.
Original | Presolved | |
---|---|---|
Variables | 6805 | 6404 |
Constraints | 884 | 483 |
Binaries | 6724 | 6323 |
Integers | 0 | 0 |
Continuous | 81 | 81 |
Implicit Integers | 0 | 0 |
Fixed Variables | 0 | 0 |
Nonzero Density | 0.00581237 | 0.01101930 |
Nonzeroes | 34965 | 34084 |
Original | Presolved | |
---|---|---|
Total | 884 | 483 |
Empty | 0 | 0 |
Free | 0 | 0 |
Singleton | 401 | 0 |
Aggregations | 0 | 0 |
Precedence | 0 | 0 |
Variable Bound | 0 | 0 |
Set Partitioning | 22 | 22 |
Set Packing | 0 | 0 |
Set Covering | 0 | 0 |
Cardinality | 80 | 80 |
Invariant Knapsack | 0 | 0 |
Equation Knapsack | 0 | 0 |
Bin Packing | 0 | 0 |
Knapsack | 0 | 0 |
Integer Knapsack | 0 | 0 |
Mixed Binary | 381 | 381 |
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 | 1.322219 | ||||
Constraint % | 0.207039 | 0.207039 | 0.207039 | 0.207039 | |
Variable % | 4.809490 | 4.809490 | 4.809490 | 4.809490 | |
Score | 0.039416 |
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 | 467.4075 | 467.4075 | 0 | 0 | 0 | - | 2018-10-12 | Solution found during MIPLIB2017 problem selection. |
The following instances are most similar to swath 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 |
---|---|---|---|---|---|---|---|---|---|---|---|
swath3 | easy | 6805 | 2706 | 0 | 4099 | 884 | 34965 | D. Panton | swath | 397.76134365 | benchmark benchmark_suitable mixed_binary |
swath2 | easy | 6805 | 2406 | 0 | 4399 | 884 | 34965 | D. Panton | swath | 385.1996929499999 | benchmark_suitable mixed_binary |
swath1 | easy | 6805 | 2306 | 0 | 4499 | 884 | 34965 | D. Panton | swath | 379.07129575 | benchmark benchmark_suitable mixed_binary |
ns1456591 | open | 8399 | 8000 | 19 | 380 | 1997 | 199862 | NEOS Server Submission | neos-pseudoapplication-52 | 988.1405440676191* | set_partitioning cardinality mixed_binary general_linear |
neos-5221106-oparau | open | 25445 | 25120 | 0 | 325 | 13897 | 245756 | Hans Mittelmann | neos-pseudoapplication-46 | 55.5399999999997* | precedence variable_bound set_partitioning cardinality knapsack mixed_binary |
@article{PantonElbers1999,
author = {D. M. Panton and A. W. Elbers},
instance = {swath},
journal = {Interfaces},
language = {English},
number = {2},
pages = {73--88},
title = {Mission Planning for Synthetic Aperture Radar Surveillance},
volume = {29},
year = {1999}
}