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arXiv · 2006.09912

PACE Solver Description: Bute-Plus: A Bottom-Up Exact Solver for Treedepth

James Trimble
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Abstract

This note introduces Bute-Plus, an exact solver for the treedepth problem. The core of the solver is a positive-instance driven dynamic program that constructs an elimination tree of minimum depth in a bottom-up fashion. Three features greatly improve the algorithm's run time. The first of these is a specialised trie data structure. The second is a domination rule. The third is a heuristic presolve step can quickly find a treedepth decomposition of optimal depth for many instances.

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James Trimble. 2020-06-17. PACE Solver Description: Bute-Plus: A Bottom-Up Exact Solver for Treedepth. https://doi.org/10.4230/lipics.ipec.2020.34

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