Faster Dynamic Range Mode

Faster Dynamic Range Mode
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更快的动态范围模式

DOI:
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发表时间:
2020
期刊:
International Colloquium on Automata, Languages and Programming
影响因子:
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通讯作者:
Yinzhan Xu
Yinzhan Xu
中科院分区:
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文献类型:
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作者:
Bryce Sandlund;Yinzhan Xu

文献摘要

被引文献

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在动态范围模式问题中,我们给出了一个由$ n $界定的序列$ a $的长度,并要求插入元素插入,删除和查询,以了解$ a $的连续子序列的最常见元素。在这项工作中,我们设计了一个确定性数据结构,该结构在最差的案例中处理每个操作$ ilde {o}(n^{0.655994})$ time,从而破坏$ o(n^{2/3})$ per-此问题的操作时间障碍。通过将Williams和XU中的想法(SODA 2020)与最小产品的新型数据结构变体相结合,可以实现数据结构。
In the dynamic range mode problem, we are given a sequence $a$ of length bounded by $N$ and asked to support element insertion, deletion, and queries for the most frequent element of a contiguous subsequence of $a$. In this work, we devise a deterministic data structure that handles each operation in worst-case $ ilde{O}(N^{0.655994})$ time, thus breaking the $O(N^{2/3})$ per-operation time barrier for this problem. The data structure is achieved by combining the ideas in Williams and Xu (SODA 2020) for batch range mode with a novel data structure variant of the Min-Plus product.