互联网坐标方案中地标放置的实证评价

Sridhar Srinivasan, E. Zegura
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引用次数: 4

摘要

许多应用程序都可以从了解主机之间的延迟中获益。最近,有一些建议,如全球网络定位(GNP) (t.s.e. Ng et al., 2002)和互联网坐标系统(ICS) (H. Lim et al., 2003),试图为互联网上的主机提供这一点。该方案通过使用一组被称为“地标”的节点来计算其他主机的坐标来工作。在本文中,我们研究了地标的放置对这些建议的性能的影响。结果表明,在随机放置的情况下,这些方案的估计误差变化很大。我们提出启发式方法来放置表现良好的地标。我们还研究了这些方案与测量误差的行为,并表明GNP受测量误差的影响比ICS小
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An empirical evaluation of landmark placement on Internet coordinate schemes
Many applications can benefit from knowledge of latency between hosts. Recently, there have been proposals such as global network positioning (GNP) (T. S. E. Ng et al., 2002) and Internet coordinate system (ICS) (H. Lim et al., 2003) that attempt to provide this for hosts on the Internet. The schemes work by using a small set of nodes called "landmarks" to compute the coordinates of other hosts. In this paper, we investigate the effect of placement of landmarks on the performance of these proposals. We show that with random placement, the estimation error of these schemes varies widely. We propose heuristics for placing landmarks that show good performance. We also investigate the behaviour of these schemes with measurement errors and show that GNP is less affected by measurement errors than ICS
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