Submitter Variables Constraints Density Status Group Objective MPS File
Simon Bowly 28 24 1 open generated -9473.61486112 gen-ip016.mps.gz

Randomly generated integer and binary programming instances. These results are part of an early phase of work aimed at generating diverse and challenging MIP instances for experimental testing. We have aimed to produce small integer and binary programming instances which are reasonably difficult to solve and have varied structure, eliciting a range of behaviour in state of the art algorithms.

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 28 28
Constraints 24 24
Binaries 0 0
Integers 28 28
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 1 1
Nonzeroes 672 672
Constraint Classification Properties
Original Presolved
Total 24 24
Empty 0 0
Free 0 0
Singleton 0 0
Aggregations 0 0
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 0 0
General Linear 24 24
Indicator 0 0

Structure

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

value min median mean max
Components 0.30103
Constraint % 100 100 100 100
Variable % 100 100 100 100
Score 0.00000

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 -9473.615 -9473.615 0 0 0 - 2018-10-10 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to gen-ip016 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
gen-ip036 29 0 29 0 46 1303 Simon Bowly generated easy -4606.67961
supportcase39 1025 0 1024 1 16384 398774 Domenico Salvagnin open -1085069.602859*
haprp 1828 0 1828 0 1048 3628 MIPLIB submission pool easy 3673280.6808
gen-ip002 41 0 41 0 24 922 Simon Bowly generated easy -4783.733392
neos-3426085-ticino 4688 879 3809 0 308 9083 Jeff Linderoth neos-pseudoapplication-105 open 225*

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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