OR-Library is a collection of test data sets for a variety of OR problems.
A full list of the test data sets available in OR-Library can be found here.
There are currently 40 data files. These data files are the test problem sets IV to XIII and A to C in Table 1 of J.E.Beasley "An algorithm for solving large capacitated warehouse location problems" European Journal of Operational Research 33 (1988) 314-325. These test problems essentially (but see Appendix in the above paper) include the standard Akinc and Khumawala test problems for the capacitated warehouse location problem. The following table gives the relationship between test problem set and the appropriate files: Problem set Files IV cap41, ..., cap44 V cap51 VI cap61, ..., cap64 VII cap71, ..., cap74 VIII cap81, ..., cap84 IX cap91, ..., cap94 X cap101, ..., cap104 XI cap111, ..., cap114 XII cap121, ..., cap124 XIII cap131, ..., cap134 A capa B capb C capc The format of these data files is: number of potential warehouse locations (m), number of customers (n) for each potential warehouse location i (i=1,...,m): capacity, fixed cost for each customer j (j=1,...,n): demand, cost of allocating all of the demand of j to warehouse i (i=1,...,m) For files capa, capb and capc (which are large files) in order to save file space a single data file is used to represent four test problems. The word 'capacity' in these files should be replaced by the appropriate numeric value from Table 1 of the above paper in order to generate each of the four problems in problem sets A, B and C. The value of the optimal solution for each of these data files is given in the file capopt. The largest file is capc of size 1300Kb (approximately). The entire set of files is of size 5000Kb (approximately).
Click here to access these files