Abstract
We define two algebra-based algorithms for solving the Minimum Spanning Tree problem with partially-ordered edges. The parametric structure we propose is a c-semiring, being able to represent different cost-metrics at the same time. We embed c-semirings into the Kruskal and Reverse-delete Kruskal algorithms (thus generalising them), and we suppose the edge costs to be partially ordered. C-semirings can represent multi-criteria MST problems, which are NP-hard to solve. Finally, we test one of the new algorithms to prove its applicability in practice, and we compare it with related work.
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