Strong Steiner Tree Approximations in Practice
Strong Steiner Tree Approximations in Practice
复制标题
实践中的强斯坦纳树近似
DOI:
10.1145/3299903
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
M. Chimani
中科院分区:
文献类型:
--
作者:
S. Beyer;M. Chimani
In this experimental study, we consider Steiner tree approximation algorithms that guarantee a constant approximation ratio smaller than 2. The considered greedy algorithms and approaches based on linear programming involve the incorporation ofk-restricted full components for somek≥ 3. For most of the algorithms, their strongest theoretical approximation bounds are only achieved fork→ ∞. However, the running time is also exponentially dependent onk, so only smallkare tractable in practice.We investigate different implementation aspects and parameter choices that finally allow us to construct algorithms (somewhat) feasible for practical use. We compare the algorithms against each other, to an exact algorithm based on integer linear programs, and to fast and simple 2-approximations as well as state-of-the-art heuristics.
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