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arXiv 2405.04467cs.DS
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具有近对数写入次数的在线列表标记

Online List Labeling with Near-Logarithmic Writes

Martin P. Seybold

AI总结:

针对在线列表标记问题,本文提出基于跳表的算法,在无感知对手的插入与删除下维持有序存储,并将每次更新的期望摊还写入次数降至近对数级别。

摘要:

在在线列表标记问题中,来自全序全域的一组 $n \leq N$ 个元素必须按排序顺序存储在具有 $m=N+\lceil\varepsilon N \rceil$ 个槽位的数组中,其中 $\varepsilon \in (0,1]$ 为常数,同时由对手选择必须插入该集合以及从该集合中删除的元素。我们设计了一种基于跳表的算法,用于在无感知对手面前维持顺序,并证明每次更新的期望摊还写入次数为 $O(\varepsilon^{-1}\log(n)\operatorname{poly}(\log\log n))$。

英文摘要:

In the Online List Labeling problem, a set of $n \leq N$ elements from a totally ordered universe must be stored in sorted order in an array with $m=N+\lceil\varepsilon N \rceil$ slots, where $\varepsilon \in (0,1]$ is constant, while an adversary chooses elements that must be inserted and deleted from the set. We devise a skip-list based algorithm for maintaining order against an oblivious adversary and show that the expected amortized number of writes is $O(\varepsilon^{-1}\log (n) \operatorname{poly}(\log \log n))$ per update.

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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