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.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
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
Constraint Classification Properties
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

Structure

Available nonzero structure and decomposition information. Further information can be found here.

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

Best Known Solution(s)

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.

Similar instances in collection

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 Variables Binaries Integers Continuous Constraints Nonz. Submitter Group Status Objective
swath3 6805 2706 0 4099 884 34965 D. Panton swath easy 397.76134365
swath2 6805 2406 0 4399 884 34965 D. Panton swath easy 385.19969295
swath1 6805 2306 0 4499 884 34965 D. Panton swath easy 379.07129575
ns1456591 8399 8000 19 380 1997 199862 NEOS Server Submission neos-pseudoapplication-52 open 1118.0384627*
neos-5221106-oparau 25445 25120 0 325 13897 245756 Hans Mittelmann neos-pseudoapplication-46 open 64.29999999346*

Reference

@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}
}

Last Update Nov 19, 2018 by Gregor Hendel
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