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Errata for "SpaceSaving±: An Optimal Algorithm for Frequency Estimation and Frequent Items in the Bounded-Deletion Model"

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Michel de RougemontAuthors Info & Claims

Proceedings of the VLDB Endowment, Volume 17, Issue 4

Page 643

https://doi.org/10.14778/3636218.3636221

Published: 05 March 2024 Publication History

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Abstract

This errata article points out an implicit assumption in the work of four of us published in VLDB 2022. The SpaceSaving± algorithm in bounded deletion data stream presented in the paper implicitly assumed deletions happen after all insertions. When insertions and deletions are interleaved, that algorithm may severely underestimate item's frequency. We first illustrate this phenomenon by an example and then present a modified algorithm with minor changes to allow interleaving between insertions and deletions. We also include a pointer to a full analysis of the new algorithms.

References

[1]

Ahmed Metwally, Divyakant Agrawal, and Amr El Abbadi. 2005. Efficient computation of frequent and top-k elements in data streams. In International conference on database theory. Springer, 398--412.

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[2]

Fuheng Zhao, Divyakant Agrawal, Amr El Abbadi, Claire Mathieu, Ahmed Metwally, and Michel de Rougemont. 2023. A Detailed Analysis of the SpaceSaving± Family of Algorithms with Bounded Deletions. arXiv:2309.12623 [cs.DB]

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[3]

Fuheng Zhao, Divyakant Agrawal, Amr El Abbadi, and Ahmed Metwally. 2021. SpaceSaving±: An Optimal Algorithm for Frequency Estimation and Frequent items in the Bounded Deletion Model. arXiv preprint arXiv:2112.03462 (2021).

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Index Terms

Errata for "SpaceSaving±: An Optimal Algorithm for Frequency Estimation and Frequent Items in the Bounded-Deletion Model"
1. Information systems
  1. Data management systems
    1. Database management system engines
  2. Information systems applications
    1. Data mining
2. Theory of computation
  1. Design and analysis of algorithms
  2. Theory and algorithms for application domains

Index terms have been assigned to the content through auto-classification.

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cover image Proceedings of the VLDB Endowment

Proceedings of the VLDB Endowment Volume 17, Issue 4

December 2023

309 pages

ISSN:2150-8097

Editors:
Meihui Zhang
Beijing Institute of Technology
,
Cyrus Shahabi
University of Southern California

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VLDB Endowment

Publication History

Published: 05 March 2024

Published in PVLDB Volume 17, Issue 4

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