Submitter Variables Constraints Density Status Group Objective MPS File
Haroldo Gambini Santos 10250 3522 5.65089e-03 easy nursescheduling 58 nursesched-sprint02.mps.gz

Nurse Scheduling Problems from the First International Nurse Rostering Competition - INRC 2010

Instance Statistics

Detailed explanation of the following tables can be found here.

Size Related Properties
Original Presolved
Variables 10250 10210
Constraints 3522 3512
Binaries 10230 10190
Integers 20 20
Continuous 0 0
Implicit Integers 0 0
Fixed Variables 0 0
Nonzero Density 0.00565089 0.00568890
Nonzeroes 204000 203990
Constraint Classification Properties
Original Presolved
Total 3522 3512
Empty 0 0
Free 0 0
Singleton 10 0
Aggregations 0 0
Precedence 0 0
Variable Bound 0 0
Set Partitioning 632 672
Set Packing 1410 1490
Set Covering 320 0
Cardinality 360 320
Invariant Knapsack 690 1010
Equation Knapsack 0 0
Bin Packing 0 0
Knapsack 0 0
Integer Knapsack 0 0
Mixed Binary 80 0
General Linear 20 20
Indicator 0 0

Structure

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

value min median mean max
Components 1.491362
Constraint % 0.1993170 2.3918 3.01822 3.95786
Variable % 0.0979432 3.3268 1.94907 7.93340
Score 0.685861

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 58 58 0 0 0 - 2018-10-12 Solution found during MIPLIB2017 problem selection.

Similar instances in collection

The following instances are most similar to nursesched-sprint02 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
nursesched-medium04 29667 29613 54 0 8668 621829 Haroldo Gambini Santos nursescheduling easy 237.0
nursesched-sprint-hidden09 11650 11630 20 0 4872 208050 Haroldo Gambini Santos nursescheduling easy 338.0
nursesched-medium-hint03 34248 34170 78 0 14062 622800 Haroldo Gambini Santos nursescheduling hard 115.0
neos-498623 9861 8500 0 1361 2047 148434 NEOS Server Submission neos-pseudoapplication-5 easy 16.6
nursesched-sprint-late03 11690 11670 20 0 5032 208410 Haroldo Gambini Santos nursescheduling easy 48.0

Reference

@Article{Santos2016,
author="Santos, Haroldo G.
and Toffolo, T{\'u}lio A. M.
and Gomes, Rafael A. M.
and Ribas, Sabir",
title="Integer programming techniques for the nurse rostering problem",
journal="Annals of Operations Research",
year="2016",
volume="239",
number="1",
pages="225--251",
issn="1572-9338",
doi="10.1007/s10479-014-1594-6",
url="http://dx.doi.org/10.1007/s10479-014-1594-6"
}

Last Update Nov 19, 2018 by Gregor Hendel
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