Abstract
We present a biased random-key genetic algorithm (BRKGA) for finding small covers of computationally difficult set covering problems that arise in computing the 1-width of incidence matrices of Steiner triple systems. Using a parallel implementation of the BRKGA, we compute improved covers for the two largest instances in a standard set of test problems used to evaluate solution procedures for this problem. The new covers for instances A 405 and A 729 have sizes 335 and 617, respectively. On all other smaller instances our algorithm consistently produces covers of optimal size.
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Resende, M.G.C., Toso, R.F., Gonçalves, J.F. et al. A biased random-key genetic algorithm for the Steiner triple covering problem. Optim Lett 6, 605–619 (2012). https://doi.org/10.1007/s11590-011-0285-3
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DOI: https://doi.org/10.1007/s11590-011-0285-3