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arXiv · 1204.4835

Succinct Indices for Range Queries with applications to Orthogonal Range Maxima

Arash Farzan·J. Ian Munro·Rajeev Raman
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Abstract

We consider the problem of preprocessing $N$ points in 2D, each endowed with a priority, to answer the following queries: given a axis-parallel rectangle, determine the point with the largest priority in the rectangle. Using the ideas of the \emph{effective entropy} of range maxima queries and \emph{succinct indices} for range maxima queries, we obtain a structure that uses O(N) words and answers the above query in $O(\log N \log \log N)$ time. This is a direct improvement of Chazelle's result from FOCS 1985 for this problem -- Chazelle required $O(N/\epsilon)$ words to answer queries in $O((\log N)^{1+\epsilon})$ time for any constant $\epsilon > 0$.

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Arash Farzan, J. Ian Munro, Rajeev Raman. 2012-04-21. Succinct Indices for Range Queries with applications to Orthogonal Range Maxima. https://arxiv.org/abs/1204.4835

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