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arXiv 1707.03492cs.DC
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直线上不经意机器人的故障诱导动力学

Fault-Induced Dynamics of Oblivious Robots on a Line

Jean-Lou De Carufel, Paola Flocchini

摘要:

在Look-Compute-Move模型中存在故障机器人的情况下的计算研究一直是广泛调查的对象,通常的目标是设计算法容忍尽可能多的故障。在本文中,我们启动了一个新的调查路线的存在故障,专注于一个相当不同的问题。我们有兴趣了解一组机器人的动态时,他们执行的算法设计的一个无故障的环境中,在一些不可检测的坠毁机器人的存在。我们开始这项调查集中在经典的点收敛算法由Ando等人。在一个简单的设置(这已经提出了严重的挑战)的机器人有限的能见度:机器人完全同步运行在一条线上,最多有两个是错误的。有趣的是,也许令人惊讶的是,故障的存在导致机器人执行某种形式的散射,而不是点收敛。事实上,我们发现,他们安排自己的段内界定的两个故障交错序列的等距机器人。它们形成的结构具有层次性:机器人将自己组织成组,只有在所有较低级别的组都收敛之后,某个级别的组才收敛到等距分布。这是第一次研究由故障的存在引起的遗忘机器人的非预期动力学。

英文摘要:

The study of computing in presence of faulty robots in the Look-Compute-Move model has been the object of extensive investigation, typically with the goal of designing algorithms tolerant to as many faults as possible. In this paper, we initiate a new line of investigation on the presence of faults, focusing on a rather different issue. We are interested in understanding the dynamics of a group of robots when they execute an algorithm designed for a fault-free environment, in presence of some undetectable crashed robots. We start this investigation focusing on the classic point-convergence algorithm by Ando et al. for robots with limited visibility, in a simple setting (which already presents serious challenges): the robots operate fully synchronously on a line, and at most two of them are faulty. Interestingly, and perhaps surprisingly, the presence of faults induces the robots to perform some form of scattering, rather than point-convergence. In fact, we discover that they arrange themselves inside the segment delimited by the two faults in interleaved sequences of equidistant robots. The structure that they form has a hierarchical nature: robots organize themselves in groups where a group of some level converges to an equidistant distribution only after all groups of lower levels have converged. This is the first study on the unintended dynamics of oblivious robots induced by the presence of faults.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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