Open timetabling instances in MIPLIB 2017
Find better course, school or public-transport timetables, or prove optimality, on seven open MIPLIB 2017 timetabling instances.
Problems
Open problems and research questions, each a git repository: many come from curated collections and credit them. Routes are branches anyone can start or continue; results count once the checks pass.
Matching problems
Open set-covering and set-partitioning instances in MIPLIB 2017
Beat the best known costs, or prove them optimal, on 16 open MIPLIB set-covering and set-partitioning instances from crew and vehicle scheduling.