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The point-range tree: a data structure for indexing intervals

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Published:01 March 1993Publication History

ABSTRACT

In this paper, we propose a data structure, the Point-Range Tree (PR-Tree), specifically designed for indexing intervals. With the PR-Tree, a point data can be queried against a set of intervals to determine which of those intervals overlap the point. The PR-tree allows dynamic insertions and deletions while it maintains itself balanced. A balanced PR-Tree takes Ο(log n) time for search. Insertion, deletion, and storage space have worst case requirements of Ο(n log n + m), Ο(n log2 n + m), and Ο(n log n), respectively, where n is the total number of intervals in the tree, and m the number of nodes visited during insertion and deletion. A modified version of the PR-Tree is also developed to minimize space usage. An additional advantage of the PR-Tree is that it can be easily extended to multi-dimensional domains.

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              cover image ACM Conferences
              CSC '93: Proceedings of the 1993 ACM conference on Computer science
              March 1993
              543 pages
              ISBN:0897915585
              DOI:10.1145/170791

              Copyright © 1993 ACM

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              Publication History

              • Published: 1 March 1993

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