【24h】

Approximating asymmetric maximum TSP

机译:近似不对称最大TSP

获取原文

摘要

The asymmetric maximum travelling salesman problem, also known as the Taxicab Ripoff problem, is the problem of finding a maximally weighted tour in a complete asymmetric graph with non-negative weights. Interesting in its own right, this problem is also motivated by such problems such as the shortest superstring problem.We propose a polynomial time approximation algorithm for the problem with a 5/8 approximation guarantee. This (1) improves upon the approximation factors of previous results and (2) presents a simpler solution to the previously fairly involved algorithms. Our solution uses a simple LP formulation. Previous solutions where combinatorial. We make use of the LP in a novel manner and strengthen the Path-Coloring method originally proposed in [13].
机译:最大旅行商不对称问题,也称为计程车Ripoff问题,是在具有非负权重的完整不对称图中找到最大加权行程的问题。有趣的是,该问题也受诸如最短超字符串问题之类的问题的驱使。针对此问题,我们提出了一种具有5/8逼近保证的多项式时间逼近算法。这(1)改进了先前结果的近似因子,并且(2)为先前相当复杂的算法提供了一种更简单的解决方案。我们的解决方案使用简单的LP公式。以前的解决方案组合在一起。我们以新颖的方式使用LP,并加强了[13]中最初提出的路径着色方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号