gen-ip016

general_linear

Submitter Variables Constraints Density Status Group Objective MPS File
Simon Bowly 28 24 1 easy generated -9476.155197 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. Solved with XPRESS in a few seconds.

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
2 -9476.155 -9476.155 0 0 0 Yuji Shinano 2019-02-27 “Found with ParaNUOPT(An experimental implementation) using 19 cores.”
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 Status Variables Binaries Integers Continuous Constraints Nonz. Submitter Group Objective Tags
gen-ip036 easy 29 0 29 0 46 1303 Simon Bowly generated -4606.67961 benchmark_suitable general_linear
supportcase39 open 1025 0 1024 1 16384 398774 Domenico Salvagnin -1085069.602859* general_linear
haprp easy 1828 0 1828 0 1048 3628 MIPLIB submission pool 3673280.6808 decomposition aggregations general_linear
gen-ip002 easy 41 0 41 0 24 922 Simon Bowly generated -4783.733392 benchmark benchmark_suitable general_linear
neos-3426085-ticino open 4688 879 3809 0 308 9083 Jeff Linderoth neos-pseudoapplication-105 225* decomposition mixed_binary general_linear

Reference

No bibliographic information available

Last Update Mär 19, 2019 by Gregor Hendel
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