中文

通过提升与投影近似(未加权)树增广问题(第0部分:针对(未加权)TAP的 $1.8+\epsilon$ 近似)

数据结构与算法 2016-04-05 v1

摘要

我们通过 Lasserre(平方和)系统研究未加权树增广问题(TAP)。我们证明了相对于 SDP 松弛的 (1.8+ϵ1.8+\epsilon) 近似保证,该保证与 Even、Feldman、Kortsarz 和 Nutov 在 ACM TALG (2009) 中的组合近似保证相匹配,其中 ϵ>0\epsilon>0 为常数。我们利用 Rothvoß (arXiv:1111.5473, 2011) 与 Karlin、Mathieu 和 Nguyen (IPCO 2011) 的分解结果,通过识别 Lasserre 系统分数解的一些性质,将 Even 等人的整数解组合分析推广到分数解。

关键词

引用

@article{arxiv.1604.00708,
  title  = {Approximating (Unweighted) Tree Augmentation via Lift-and-Project (Part 0: $1.8+\epsilon$ approximation for (Unweighted) TAP)},
  author = {Joe Cheriyan and Zhihan Gao},
  journal= {arXiv preprint arXiv:1604.00708},
  year   = {2016}
}

备注

This is a manuscript from July 2014 that was widely circulated but was not posted on the web. It is being posted for the sake of archiving/referencing. The results have been subsumed by arXiv:1507.01309 by the same authors. 15 pages, 1 figure