Quadratic assignment problem Vehicle routing problem also at HEC Traveling salesman Graph partitioning Quantified Boolean formulas Constraint solvers Shortest paths Mixed integer programming Train timetabling Set covering and packing Beasley's OR library with many problems Maximum clique, Maximum independent set, minimum vertex cover, vertex coloring ...


Here is a start. Please add to this. BOLIB: Bilevel Optimization LIBrary of Test Problems https://eprints.soton.ac.uk/436854/1/BOLIBver2.pdf CBLIB: The Conic Benchmark Library: http://cblib.zib.de/ . Twitter at https://twitter.com/cblibtw COMPlib: COnstraint Matrix-optimization Problem library (Nonlinear SDPs, control system design, and related problems) ...


Some more libraries: Biq Mac Library: a Binary quadratic and max cut Library: http://biqmac.uni-klu.ac.at/biqmaclib.html OR Library: a collection of test data sets for a variety of Operations Research problems: http://people.brunel.ac.uk/~mastjjb/jeb/info.html SIPLIB: a collection of stochastic integer programming problems: https://www2.isye.gatech.edu/~...


Some other libraries (mainly for MINLP) are: MINLP-Lib. PrincetonLib.


Some more: Atamturk datasets on fixed-charge flow, lot sizing, mixed-integer knapsack, and more Combinatorial Auction Test Suite (CATS) National Traveling Salesman Problems VLSI data sets: Another collection of 102 TSP instances GiC Data Sets Update: I made a GitHub repository and added all of these references. there.


Some libraries for stochastic programming test problems may be found in Jeff Linderoth, Alex Shapiro, and Stephen Wright (2002) POSTS: A (PO)rtable (S)tochastic programming (T)est (S)et (Derek Holmes and John Birge) Test-Problem Collection for Stochastic Linear Programming (Andy Felt) SIPLIB: A (S)tochastic (I)nteger (P)rogramming Test Problem (LIB)rary (...


Would these be helpful? 1) OptaPlanner examples problem definitions and data sets Original problems: cloud balancing, dinner party, tennis club scheduling, meeting scheduling, task assigning, investment portfolio optimization, conference scheduling, rock tour, flight crew scheduling Problems defined by academic challenges and others: tsp, course scheduling ...


There is also: GasLib, with gas network instances based on perturbed real-world data.

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