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Dynamic Ray Stabbing

Published: 30 October 2014 Publication History
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  • Abstract

    We consider maintaining a dynamic set S of N horizontal segments in ℝ2 such that, given a vertical ray Q in ℝ2, the segments in S intersecting Q can be reported efficiently. In the external memory model, we give a structure that consumes O(N/B) space, answers a query in O(log BN + K/B) time (where K is the number of reported segments), and can be updated in O(log BN) amortized time per insertion and deletion. With B set to a constant, the structure also works in internal memory, consuming space O(N), answering a query in O(log N + K) time, and supporting an update in O(log N) amortized time.

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    Cited By

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    • (2017)Covering the Optimal Time Window Over Temporal DataProceedings of the 2017 ACM on Conference on Information and Knowledge Management10.1145/3132847.3132935(687-696)Online publication date: 6-Nov-2017
    • (2015)Reporting Consecutive Substring Occurrences Under Bounded Gap ConstraintsCombinatorial Pattern Matching10.1007/978-3-319-19929-0_31(367-373)Online publication date: 16-Jun-2015

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    Published In

    cover image ACM Transactions on Algorithms
    ACM Transactions on Algorithms  Volume 11, Issue 2
    November 2014
    215 pages
    ISSN:1549-6325
    EISSN:1549-6333
    DOI:10.1145/2685353
    Issue’s Table of Contents
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 30 October 2014
    Accepted: 01 November 2013
    Received: 01 August 2012
    Published in TALG Volume 11, Issue 2

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    Author Tags

    1. Ray stabbing
    2. computational geometry
    3. dynamic data structures
    4. pointer machines
    5. segment intersection

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    View all
    • (2017)Covering the Optimal Time Window Over Temporal DataProceedings of the 2017 ACM on Conference on Information and Knowledge Management10.1145/3132847.3132935(687-696)Online publication date: 6-Nov-2017
    • (2015)Reporting Consecutive Substring Occurrences Under Bounded Gap ConstraintsCombinatorial Pattern Matching10.1007/978-3-319-19929-0_31(367-373)Online publication date: 16-Jun-2015

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