Network design for minimum spanning trees under Hamming distance

Qin Wang, Longshu Wu


We consider a class of network-design problems with minimum sum of modification and network costs for minimum spanning trees under Hamming distance. By constructing three auxiliary networks, we present a strongly polynomial-time algorithm for this problem. The method can be applied to solve many network-design problems. And, we show that a variation model of this problem is NP-hard, even when the underlying network is a tree, by transforming the 0–1 knapsack problem to this model.



network design, spanning tree, Hamming distance, polynomial algorithm, NP-hard.


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ANZIAM Journal, ISSN 1446-8735, copyright Australian Mathematical Society.