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New Trends in Transform-based Lossless Compression Algorithms

Research Project

Project/Area Number 17K00004
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Theory of informatics
Research InstitutionGunma University

Principal Investigator

Yokoo Hidetoshi  群馬大学, 大学院理工学府, 教授 (70134153)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords情報基礎 / 情報理論 / データ圧縮 / ユニバーサル符号 / エントロピー符号 / エントロピー符号化
Outline of Final Research Achievements

This study aims at the research and development of novel lossless compression algorithms, which can be classified into entropy codes and universal codes. We focus on asymmetric numeral systems (ANS) and compression by substring enumeration (CSE) out of both classes. We give a sufficient condition for ANS to be asymptotically optimal in compression performance. We establish the relation between CSE and the BW-transform, and derive a new CSE implementation from their improved variations.

Academic Significance and Societal Importance of the Research Achievements

高度情報社会にあって,データ通信の重要性は言を俟たない。データ通信の効率化と高信頼性化のための様々な技術の基盤をなすエントロピー符号化とユニバーサル符号化とを理論的に研究したものである。特に,Apple等のIT大企業が製品に組み込んでいるとされながら,その性能の理論的根拠に乏しかったエントロピー符号の例について,種々の性質を世界に先駆けて明らかにした。その結果,データの蓄積や通信のためのこれからのシステムにとって有用な知見を得た。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (13 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Open Access: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Int'l Joint Research] Universite Laval(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universite Laval(カナダ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Compression by Substring Enumeration and Its Related Topics: As a Bridge Between Offline Universal Codes2018

    • Author(s)
      横尾英俊
    • Journal Title

      IEICE ESS Fundamentals Review

      Volume: 12 Issue: 1 Pages: 21-29

    • DOI

      10.1587/essfr.12.1_21

    • NAID

      130007387297

    • ISSN
      1882-0875
    • Year and Date
      2018-07-01
    • Related Report
      2018 Research-status Report
    • Open Access
  • [Presentation] 部分列数え上げデータ圧縮法拡張のための実装法2020

    • Author(s)
      入江明宏,横尾英俊
    • Organizer
      電子情報通信学会情報理論研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Fast construction of almost optimal symbol distributions for asymmetric numeral systems2019

    • Author(s)
      Danny Dube and Hidetoshi Yokoo
    • Organizer
      2019 IEEE International Symposium on Information Theory, ISIT 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Asymptotic optimality of asymmetric numeral systems2019

    • Author(s)
      Hidetoshi Yokoo and Danny Dube
    • Organizer
      42nd Symposium on Information Theory and its Applications, SITA2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] エントロピー符号化法ANSのための確率近似法の多元情報源での評価2019

    • Author(s)
      井上レオナルド,横尾英俊
    • Organizer
      電子情報通信学会技術研究報告, vol. 118, no. 477, IT2018-93
    • Related Report
      2018 Research-status Report
  • [Presentation] A new variation of asymmetric numeral systems2019

    • Author(s)
      Xin Qi and Hidetoshi Yokoo
    • Organizer
      電子情報通信学会技術研究報告, vol. 118, no. 477, IT2018-94
    • Related Report
      2018 Research-status Report
  • [Presentation] Probability approximation in asymmetric numeral systems2018

    • Author(s)
      Hidetoshi Yokoo and Toshiki Shimizu
    • Organizer
      International Symposium on Information Theory and Its Applications (ISITA2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 部分列数え上げデータ圧縮法のある拡張について2018

    • Author(s)
      横尾英俊
    • Organizer
      第41回情報理論とその応用シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] Empirical evaluation of the effect of the symbol distribution on the performance of ANS2018

    • Author(s)
      Danny Dube and Hidetoshi Yokoo
    • Organizer
      第41回情報理論とその応用シンポジウム}
    • Related Report
      2018 Research-status Report
  • [Presentation] 部分列数え上げデータ圧縮法とその関連法について2017

    • Author(s)
      横尾英俊
    • Organizer
      電子情報通信学会 情報理論研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] エントロピー符号化法ABS/ANSの冗長度評価2017

    • Author(s)
      清水寿樹,横尾英俊
    • Organizer
      第40回情報理論とその応用シンポジウム
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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