Submitter Variables Constraints Density Status Group Objective MPS File
Salim Haddadi 1600 20 1e-01 easy f2gap 76453 f2gap201600.mps.gz

Restrictions of well-known hard generalized assignment problem instances (D10400,D20400,D40400,D15900,D30900,D60900,D201600,D401600,D801600)

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 1600 1600
Constraints 20 20
Binaries 1600 1600
Integers 0 0
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.1 0.1
Nonzeroes 3200 3200
Constraint Classification Properties
Original Presolved
Total 20 20
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 20 0
Integer Knapsack 0 0
Mixed Binary 0 20
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 0.301030
Constraint % 30.000 30.000 30.000 30.000
Variable % 50.375 50.375 50.375 50.375
Score 0.148875

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 76453 76453 0 0 0 - 2018-10-13 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to f2gap201600 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
f2gap401600 1600 1600 0 0 40 3200 Salim Haddadi f2gap easy 82307.000
f2gap801600 1600 1600 0 0 80 3200 Salim Haddadi f2gap easy 86679.000
f2gap40400 400 400 0 0 40 800 Salim Haddadi f2gap easy 20772.000
nh97_potential 1180 630 328 222 1916 5748 MIPLIB submission pool easy 1418.000
pg 2700 100 0 2600 125 5200 M. Dawande easy -8674.343

Reference

No bibliographic information available

Last Update Nov 09, 2018 by Gregor Hendel
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