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首页> 外文期刊>RAIRO Operation Research >BRANCH AND CUT BASED ON THE VOLUME ALGORITHM: STEINER TREES IN GRAPHS AND MAX-CUT
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BRANCH AND CUT BASED ON THE VOLUME ALGORITHM: STEINER TREES IN GRAPHS AND MAX-CUT

机译:基于体积算法的分支和剪切:图和最大剪切中的更强树

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摘要

We present a Branch-and-Cut algorithm where the volume algorithm is applied instead of the traditionally used dual simplex algorithm to the linear programming relaxations in the root node of the search tree. This means that we use fast approximate solutions to these linear programs instead of exact but slower solutions. We present computational results with the Steiner tree and Max-Cut problems. We show evidence that one can solve these problems much faster with the volume algorithm based Branch-and-Cut code than with a dual simplex based one. We discuss when the volume based approach might be more efficient than the simplex based approach.
机译:我们提出了一种分支剪切算法,其中将体积算法而不是传统上使用的对偶单纯形法应用于搜索树根节点中的线性规划松弛。这意味着我们对这些线性程序使用快速近似解,而不是精确但较慢的解。我们用Steiner树和Max-Cut问题展示了计算结果。我们证明,使用基于体积算法的分支剪切代码比基于对偶单纯形代码可以更快地解决这些问题。我们讨论何时基于体积的方法可能比基于单纯形的方法更有效。

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