What has happened since your last visit to the MIPLIB? Find below the news log since the release of MIPLIB 2017. Please visit also the Changelog.

Jul 12, 2019 Release of a technical report that describes the selection methodology used for MIPLIB 2017 in detail.
Jun 24, 2019 The MIPLIB 2017 benchmark set has been updated after the two instances neos-5075914-elvire and neos-3754224-navua were labeled as numerically unstable and could no longer be part of the benchmark set. In order to meet our balancedness criteria regarding feature and performance coverage, the new version 2 of the MIPLIB 2017 benchmark set exchanges 5 instances in total, see CHANGELOG for details. Release of version 7 of the Solution file as well as updates to different tagged sets after 5 additional instances have been solved! Furthermore there was the correction of a curious case of the instance bmocbd2, which now is properly tagged as easy.
Jun 6, 2019 Release of version 6 of the Solution file as well as updates to different tagged sets after 4 additional instances have been solved, one by a rigorous proof without any additional software.
Apr 8, 2019 The feature extractor application and the raw data used for the selection process are now available on the Download Page.
Mar 15, 2019 Introduction of instance tags, which replace the notion of sets used so far. All instances carry a status tag, but they may also be tagged regarding special properties. In order to see all instances of a specific tag, simply click on the tag. Tags are also searchable, in order to find all instances that are labeled by both the binary and decomposition tag, as an example.
Feb 28, 2019 Release of version 5 of the Solution file as well as updates to different subsets after 3 additional instances have been solved, and 3 others have been updated.
Jan 29, 2019 Release of version 4 of the Solution file as well as updates to different subsets after 3 additional instances have been solved, and 3 others have been updated.
Jan 28, 2019 Important update of 29 instances in the collection set that were different from the MIPLIB2010 and MIPLIB2003 instances with the same name. The instance files differed from the previous MIPLIBs either within the comment section, and/or rarely represented permuted versions of the original instances. This has been corrected. All solutions or optimal/best known solutions still apply.
Nov 30, 2018 Release of version 3 of the Solution file as well as updates to different subsets after 9 additional instances have been solved, and 8 others have been updated.
Nov 09, 2018 Release of versions 2 of the hard, open, and infeasible sets as well as the Solution file after 6 previously open instances have been solved.
Nov 05, 2018 Release of MIPLIB 2017, the 6th edition of the Mixed Integer Programming library.
Aug 2017 Start of performance evaluation on submissions.
Apr 2017 Submission deadline for the new library.
Nov 2016 Public call for submissions for a new and challenging MIPLIB.

Last Update Jun 24, 2019 by Gregor Hendel
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