PolyFit: Polynomial-based indexing approach for fast approximate range aggregate queries

Zhe Li, Tsz Nam Chan, Man Lung Yiu, Christian S. Jensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Range aggregate queries find frequent application in data analytics. In many use cases, approximate results are preferred over accurate results if they can be computed rapidly and satisfy approximation guarantees. Inspired by a recent indexing approach, we provide means of representing a discrete point dataset by continuous functions that can then serve as compact index structures. More specifically, we develop a polynomial-based indexing approach, called PolyFit, for processing approximate range aggregate queries. PolyFit is capable of supporting multiple types of range aggregate queries, including COUNT, SUM, MIN and MAX aggregates, with guaranteed absolute and relative error bounds. Experimental results show that PolyFit is faster and more accurate and compact than existing learned index structures.

Original languageEnglish
Title of host publicationAdvances in Database Technology - EDBT 2021 : 24th International Conference on Extending Database Technology, Proceedings
EditorsYannis Velegrakis, Yannis Velegrakis, Demetris Zeinalipour, Panos K. Chrysanthis, Panos K. Chrysanthis, Francesco Guerra
Number of pages12
PublisherOpenProceedings.org
Publication date2021
Pages241-252
ISBN (Electronic)978-3-89318-084-4
DOIs
Publication statusPublished - 2021
EventAdvances in Database Technology - 24th International Conference on Extending Database Technology, EDBT 2021 - Virtual, Nicosia, Cyprus
Duration: 23 Mar 202126 Mar 2021

Conference

ConferenceAdvances in Database Technology - 24th International Conference on Extending Database Technology, EDBT 2021
Country/TerritoryCyprus
CityVirtual, Nicosia
Period23/03/202126/03/2021
SponsorOracle, Snowflake, ZOOM, Zoom Video Communications, Inc.
SeriesAdvances in Database Technology
ISSN2367-2005

Bibliographical note

Publisher Copyright:
© 2021 Copyright held by the owner/author(s).

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