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arXiv · 1907.10984

Enumerating Range Modes

Kentaro Sumigawa·Sankardeep Chakraborty·Kunihiko Sadakane·Srinivasa Rao Satti
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Abstract

We consider the range mode problem where given a sequence and a query range in it, we want to find items with maximum frequency in the range. We give time- and space- efficient algorithms for this problem. Our algorithms are efficient for small maximum frequency cases. We also consider a natural generalization of the problem: the range mode enumeration problem, for which there has been no known efficient algorithms. Our algorithms have query time complexities which is linear to the output size plus small terms.

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Kentaro Sumigawa, Sankardeep Chakraborty, Kunihiko Sadakane, Srinivasa Rao Satti. 2019-07-25. Enumerating Range Modes. https://arxiv.org/abs/1907.10984

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