arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.06708cs.DS
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在线边界分析

Online Bounded Analysis

Joan Boyar, Leah Epstein, Lene M. Favrholdt, Kim S. Larsen, Asaf Levin

摘要:

虽然竞争分析通常是分析在线算法的一个非常好的工具,但有时它不能提供任何洞察力,有时它会给出反直觉的结果。许多工作已经进入探索其他性能指标,特别是针对什么似乎是竞争分析的核心问题:在线算法的性能比较是一个太强大的对手。我们考虑一种新的方法来限制对手的力量,要求在判断一个给定的在线算法时,最佳的离线算法必须执行以及在线算法,不仅对整个最终的请求序列,而且对该序列的任何前缀。这限制了对手通常的优势,即能够利用它知道序列在当前请求之后继续。通过收集在线问题,包括机器调度,装箱,双箱包装,座位预订,我们调查的意义,这种特殊的离线优势。

英文摘要:

Though competitive analysis is often a very good tool for the analysis of online algorithms, sometimes it does not give any insight and sometimes it gives counter-intuitive results. Much work has gone into exploring other performance measures, in particular targeted at what seems to be the core problem with competitive analysis: the comparison of the performance of an online algorithm is made to a too powerful adversary. We consider a new approach to restricting the power of the adversary, by requiring that when judging a given online algorithm, the optimal offline algorithm must perform as well as the online algorithm, not just on the entire final request sequence, but also on any prefix of that sequence. This is limiting the adversary's usual advantage of being able to exploit that it knows the sequence is continuing beyond the current request. Through a collection of online problems, including machine scheduling, bin packing, dual bin packing, and seat reservation, we investigate the significance of this particular offline advantage.

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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