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 9 data files. All of these files were contributed by M.S.W. Ratcliff (mspmax@swansea.ac.uk) (i) Files thpack1,thpack2,...,thpack7 These files were generated and used in: [1] E.E. Bischoff and M.S.W. Ratcliff, "Issues in the development of Approaches to Container Loading", OMEGA, vol.23, no.4, (1995) pp 377-390. The procedure used to create these test problems is presented in the above paper. These problems are single container loading problems, the objective being to maximise the volume utilisation of the container. The format of these data files is: Number of test problems (P) For each problem p (p=1,...,P) the data has the format shown in the following example: Example: 60 2508405 the problem number p, seed number used in [1] 587 233 220 container length, width, height 10 number of box types n 1 78 1 72 1 58 1 14 2 107 1 57 1 57 1 11 where there is one line for each box type 3 ................... etc for n lines The line for each box type contains 8 numbers: box type i, box length, 0/1 indicator box width, 0/1 indicator box height, 0/1 indicator number of boxes of type i After each box dimension the 0/1 indicates whether placement in the vertical orientation is permissible (=1) or not (=0). (ii) File thpack8 This data was originally used in: [2] H.T. Loh & A.Y.C. Nee, 1992, A packing algorithm for hexahedral boxes, Proc. Industrial Automation 92 Conf. Singapore, 115-126 and then in [3] B.K.A. Ngoi, M.L. Tay & E.S. Chua, 1994, Applying spatial representation techniques to the container packing problem, Int. J. Prod. Res., Vol. 32, No. 1, 111-123 and then in [1] These problems are single container problems, the objective being to maximise the volume utilisation of the container. These problems have the same format as above except that there is no seed number. (iii) File thpack9 This data was originally used in: [4] N. Ivancic, K. Mathur & B.B. Mohanty, 1989, An integer-programming based heuristic approach to the three-dimensional packing problem, J. of Manuf & Ops. Man., vol. 2, 268-298 and then in [1] These problems involve multiple containers, the objective being to minimise the number of containers required to ship the entire consignment. The format for this file is identical to that of thpack8 The largest file is thpack7 of size 50Kb (approximately). The entire set of files is of size 200Kb (approximately).

Click here to access these files

There is one other file, contributed by Sam Allen School of Computer
Science University of Nottingham Jubilee Campus

Wollaton Road Nottingham NG8 1BB

sda@cs.nott.ac.uk

www.cs.nott.ac.uk/~sda

This file contains the Bischoff/Ratcliff container loading problems
as here but with the extended datasets also (eg, as used in Davies/Bischoff
1999).

He (re)generated all the datasets in the way described in the original
paper (i.e. the first 7 are identical to the ones

already in the OR-library: thpack1-7) as he could not find sets 8-10 anywhere.
The source code is available at http://www.cs.nott.ac.uk/~sda/research.shtml

This file is br.zip and is available here

OTHER SOURCES

Other test problems are available here