Submitter Variables Constraints Density Status Group Objective MPS File
J. Walser 1620 3285 3.20819e-03 easy acc-tight 0 acc-tight4.mps.gz

ACC basketball scheduling instance

Imported from MIPLIB2010.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 1620 1620
Constraints 3285 3285
Binaries 1620 1620
Integers 0 0
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00320819 0.00320819
Nonzeroes 17073 17073
Constraint Classification Properties
Original Presolved
Total 3285 3285
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
Precedence 2025 2025
Variable Bound 0 0
Set Partitioning 261 261
Set Packing 162 162
Set Covering 9 198
Cardinality 36 36
Invariant Knapsack 783 594
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 9 9
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 1.959041
Constraint % 0.0304414 0.739726 0.0304414 7.12329
Variable % 0.1234570 1.111110 0.1234570 10.00000
Score 0.601613

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 0 0 0 0 0 - 2018-10-11 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to acc-tight4 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
acc-tight5 1339 1339 0 0 3052 16134 J. Walser acc-tight easy 0
acc-tight2 1620 1620 0 0 2520 15327 J. Walser acc-tight easy 0
neos-1330346 2664 2664 0 0 4248 13032 NEOS Server Submission neos-pseudoapplication-49 easy 8
neos18 3312 3312 0 0 11402 24614 NEOS Server Submission neos-pseudoapplication-49 easy 16
physiciansched6-2 111827 109346 0 2481 168336 480259 Pelin Damci-Kurt physiciansched easy 49324

Reference

@article{NemhauserTrick1998,
 author = {G. L. Nemhauser and M. A. Trick},
 journal = {Operations Research},
 language = {English},
 number = {1},
 pages = {1--8},
 title = {Scheduling a Major College Basketball Conference},
 volume = {46},
 year = {1998}
}

@misc{Walser1998,
 author = {J. P. Walser},
 note = {http://www.ps.uni-saarland.de/~walser/acc/acc.html},
 title = {Solving the {ACC} Basketball Scheduling Problem with Integer Local
Search},
 year = {1998}
}

Last Update Nov 09, 2018 by Gregor Hendel
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