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Murakami Takao  村上 隆夫

ORCIDConnect your ORCID iD *help
Researcher Number 80587981
Other IDs
Affiliation (Current) 2025: 統計数理研究所, 学際統計数理研究系, 准教授
Affiliation (based on the past Project Information) *help 2024: 統計数理研究所, 学際統計数理研究系, 准教授
2023: 統計数理研究所, データ科学研究系, 准教授
2018 – 2022: 国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 主任研究員
2017: 国立研究開発法人産業技術総合研究所, 情報・人間工学領域, 研究員
2015 – 2016: 国立研究開発法人産業技術総合研究所, 情報技術研究部門, 研究員
2014: 独立行政法人産業技術総合研究所, 情報技術研究部門, 研究員
Review Section/Research Field
Principal Investigator
Information security / Medium-sized Section 60:Information science, computer engineering, and related fields / Basic Section 60070:Information security-related
Except Principal Investigator
Medium-sized Section 60:Information science, computer engineering, and related fields / Intelligent informatics / Information security
Keywords
Principal Investigator
差分プライバシー / 位置情報プライバシー / グラフ / 位置情報 / プライバシー / 分散型SNS / 人工データ生成法 / トレース / メンバーシップ推定 / 局所型差分プライバシー … More / パーソナルデータ / 安全性指標 / グラフデータ / 時系列データ / 局所型プライバシー / 空間統計 / バイアス補正 / 再識別攻撃 / 匿名性 / 分布推定誤差 / 反復ベイズ法 / データプライバシー / 分布推定 / 加工メカニズム / TTP / 空間統計データ / Viterbiアルゴリズム / 欠損位置情報 / 曖昧化 / 匿名化 / グループスパース正則化 / テンソル分解 / マルコフモデル / 個人識別攻撃 … More
Except Principal Investigator
プライバシー / 暗号 / プライバシ保護技術 / 高機能暗号 / 情報セキュリティ / 暗号理論 / コンテスト / リスク / 匿名加工 / 購買履歴 / 再識別 / k-匿名 / ビッグデータ / 匿名化 / 個人情報 / 予測 / 安全性 / プライバシ / 公正性配慮型データマイニング / 統計的推定 / プライバシーポリシー / 局所差分プライバシー / 差分プライバシー / 公平性 / セキュリティ / 人工知能 / 機械学習 Less
  • Research Projects

    (8 results)
  • Research Products

    (27 results)
  • Co-Researchers

    (23 People)
  •  Differential Privacy Technologies for Distributed Social GraphsPrincipal Investigator

    • Principal Investigator
      村上 隆夫
    • Project Period (FY)
      2022 – 2026
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 60:Information science, computer engineering, and related fields
    • Research Institution
      The Institute of Statistical Mathematics
      National Institute of Advanced Industrial Science and Technology
  •  Agilecrypt Frameworks for Advanced Cryptographic Primitive Constructions, Compositions, and Conversions

    • Principal Investigator
      Attrapadung Nuttapong
    • Project Period (FY)
      2019 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 60:Information science, computer engineering, and related fields
    • Research Institution
      National Institute of Advanced Industrial Science and Technology
  •  A Study on Locally Private Algorithms for Large-Scale Personal DataPrincipal Investigator

    • Principal Investigator
      Murakami Takao
    • Project Period (FY)
      2019 – 2021
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 60070:Information security-related
    • Research Institution
      National Institute of Advanced Industrial Science and Technology
  •  Study on anonymization algorithm and risk to be re-identified using open data competition

    • Principal Investigator
      Kikuchi Hiroaki
    • Project Period (FY)
      2018 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (A)
    • Review Section
      Medium-sized Section 60:Information science, computer engineering, and related fields
    • Research Institution
      Meiji University
  •  Research on authentication and key management techniques based on weak secrets

    • Principal Investigator
      SHIN SeongHan
    • Project Period (FY)
      2016 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Information security
    • Research Institution
      National Institute of Advanced Industrial Science and Technology
  •  Statistical Security of Machine Learning

    • Principal Investigator
      Sakuma Jun
    • Project Period (FY)
      2016 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Intelligent informatics
    • Research Institution
      University of Tsukuba
  •  Privacy Preserving Population Distribution Estimation without Trusted Third PartiesPrincipal Investigator

    • Principal Investigator
      Murakami Takao
    • Project Period (FY)
      2016 – 2018
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Information security
    • Research Institution
      National Institute of Advanced Industrial Science and Technology
  •  A Study on Anonymous Biometric Authentication for Privacy Protection in the Era of Big DataPrincipal Investigator

    • Principal Investigator
      Murakami Takao
    • Project Period (FY)
      2014 – 2015
    • Research Category
      Grant-in-Aid for Research Activity Start-up
    • Research Field
      Information security
    • Research Institution
      National Institute of Advanced Industrial Science and Technology

All 2023 2022 2021 2019 2018 2015 2014 Other

All Journal Article Presentation

  • [Journal Article] Designing a Location Trace Anonymization Contest2023

    • Author(s)
      Takao Murakami, Hiromi Arai, Koki Hamada, Takuma Hatano, Makoto Iguchi, Hiroaki Kikuchi, Atsushi Kuromasa, Hiroshi Nakagawa, Yuichi Nakamura, Kenshiro Nishiyama, Ryo Nojima Hidenobu Oguri, Chiemi Watanabe, Akira Yamada, Takayasu Yamaguchi, and Yuji Yamaoka
    • Journal Title

      Proceedings on Privacy Enhancing Technologies (PoPETs)

      Volume: 2023 Issue: 1 Pages: 225-243

    • DOI

      10.56553/popets-2023-0014

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18H04099
  • [Journal Article] Two-Dimensional Dynamic Fusion for Continuous Authentication2023

    • Author(s)
      Attrapadung Nuttapong、Hanaoka Goichiro、Kotoi-Xie Haochen M.、Matsuda Takahiro、Moriyama Takumi、Murakami Takao、Nakamura Hidenori、Jacob Schuldt C. N.、Tokuyama Masaaki、Zhang Jing
    • Journal Title

      Proceedings of the 2023 IEEE International Joint Conference on Biometrics (IJCB 2023)

      Volume: - Pages: 1-9

    • DOI

      10.1109/ijcb57857.2023.10448866

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-19H01109
  • [Journal Article] Synthesizing differentially private location traces including co-locations2023

    • Author(s)
      Narita Jun、Murakami Takao、Hino Hideitsu、Nishigaki Masakatsu、Ohki Tetsushi
    • Journal Title

      International Journal of Information Security

      Volume: 23 Issue: 1 Pages: 389-410

    • DOI

      10.1007/s10207-023-00740-9

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-22H00521
  • [Journal Article] Differentially Private Triangle and 4-Cycle Counting in the Shuffle Model2022

    • Author(s)
      Jacob Imola, Takao Murakami, Kamalika Chaudhuri
    • Journal Title

      ACM SIGSAC Conference on Computer and Communications Security CCS 2022

      Volume: - Pages: 1505-1519

    • DOI

      10.1145/3548606.3560659

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H01109
  • [Journal Article] Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces with Cluster-Specific Features2021

    • Author(s)
      Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
    • Journal Title

      Proceedings on Privacy Enhancing Technologies (PoPETs)

      Volume: 2 Pages: 5-26

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Journal Article] How to Handle Excessively Anonymized Datasets2018

    • Author(s)
      Ryo Nojima, Hidenobu Oguri, Hiroaki Kikuchi, Hiroshi Nakagawa, Koki Hamada, Takao Murakami, Yuji Yamaoka, Chiemi Watanabe
    • Journal Title

      Journal of Information Processing

      Volume: 26 Issue: 0 Pages: 477-485

    • DOI

      10.2197/ipsjjip.26.477

    • NAID

      130007397267

    • ISSN
      1882-6652
    • Language
      English
    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18H04099
  • [Journal Article] Toward Distribution Estimation under Local Differential Privacy with Small Samples2018

    • Author(s)
      Murakami Takao、Hino Hideitsu、Sakuma Jun
    • Journal Title

      Proceedings on Privacy Enhancing Technologies

      Volume: 2018 Issue: 3 Pages: 84-104

    • DOI

      10.1515/popets-2018-0022

    • Peer Reviewed / Open Access / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K16069, KAKENHI-PROJECT-16H02864
  • [Presentation] A Crypto-Assisted Approach for Publishing Graph Statistics with Node Local Differential Privacy2022

    • Author(s)
      Shang Liu, Yang Cao, Takao Murakami, Masatoshi Yoshikawa
    • Organizer
      Proceedings of the 2022 IEEE International Conference on Big Data (IEEE BigData 2022)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22H00521
  • [Presentation] Differentially Private Triangle and 4-Cycle Counting in the Shuffle Model2022

    • Author(s)
      Jacob Imola*, Takao Murakami*, Kamalika Chaudhuri (*: equal contribution)
    • Organizer
      Proceedings of the 29th ACM Conference on Computer and Communications Security (CCS 2022)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-22H00521
  • [Presentation] Communication-Efficient Triangle Counting under Local Differential Privacy2021

    • Author(s)
      Jacob Imola*, Takao Murakami*, Kamalika Chaudhuri (*: equal contributions)
    • Organizer
      Proceedings of the 31th USENIX Security Symposium (USENIX Security 2022)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] TransMIA: Membership Inference Attacks Using Transfer Shadow Training2021

    • Author(s)
      Seira Hidano, Takao Murakami, Yusuke Kawamoto
    • Organizer
      Proceedings of the 2021 International Joint Conference on Neural Networks (IJCNN 2021)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] Locality Sensitive Hashing with Extended Differential Privacy2021

    • Author(s)
      Natasha Fernandes*, Yusuke Kawamoto*, Takao Murakami* (*: equal contribution)
    • Organizer
      Proceedings of the 26th European Symposium on Research in Computer Security (ESORICS 2021)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] Toward Accurate Data Analysis under Local Privacy2021

    • Author(s)
      Takao Murakami
    • Organizer
      The 16th International Workshop on Security (IWSEC 2021), Keynote Talk, 2021.
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] PWS Cup 2021 - 糖尿病罹患リスクを予測するヘルスケアデータの匿名化コンテスト2021

    • Author(s)
      菊池浩明, 荒井ひろみ, 井口誠, 小栗秀暢, 黒政敦史, 千田浩司, 中川裕志, 中村優一, 西山賢志郎, 野島良, 波多野卓磨, 濱田浩気, 古川諒, 馬瑞強, 前田若菜, 村上隆夫, 山岡裕司, 山田明, 渡辺知恵美
    • Organizer
      コンピュータセキュリティシンポジウム2021論文集
    • Data Source
      KAKENHI-PROJECT-18H04099
  • [Presentation] Locally Differentially Private Analysis of Graph Statistics2021

    • Author(s)
      Takao Murakami
    • Organizer
      IT-Security & Privacy Colloquium, the University of Luebeck
    • Invited
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] Locally Differentially Private Analysis of Graph Statistics2021

    • Author(s)
      Jacob Imola*, Takao Murakami*, Kamalika Chaudhuri (*: equal contributions)
    • Organizer
      Proceedings of the 30th USENIX Security Symposium (USENIX Security 2021)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] PWS Cup 2019: ID識別・トレース推定に強い位置情報の匿名加工技術を競う2019

    • Author(s)
      村上隆夫,荒井ひろみ, 井口誠 , 小栗秀暢, 菊池浩明, 黒政敦史, 中川裕志, 中村優一, 西山賢志郎, 野島良, 波多野卓磨, 濱田浩気, 山岡裕司, 山口高康, 山田明, 渡辺知恵美
    • Organizer
      コンピュータセキュリティシンポジウム2019
    • Data Source
      KAKENHI-PROJECT-18H04099
  • [Presentation] Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces2019

    • Author(s)
      Takao Murakami, Koki Hamada, Yusuke Kawamoto, Takuma Hatano
    • Organizer
      arXiv:1911.04226
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] PWS Cup 2019: ID識別・トレース推定に強い位置情報の匿名加工技術を競う2019

    • Author(s)
      村上隆夫,荒井ひろみ,井口誠 ,小栗秀暢,菊池浩明,黒政敦史,中川裕志,中村優一,西山賢志郎,野島良,波多野卓磨,濱田浩気,山岡裕司,山口高康,山田明,渡辺知恵美
    • Organizer
      コンピュータセキュリティシンポジウム2019(CSS 2019)
    • Data Source
      KAKENHI-PROJECT-19H04113
  • [Presentation] A Succinct Model for Re-identification of Mobility Traces Based on Small Training Data2018

    • Author(s)
      Takao Murakami
    • Organizer
      Proceedings of the 2018 International Symposium on Information Theory and Its Applications (ISITA 2018)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K16069
  • [Presentation] PWS Cup 2018: 匿名加工再識別コンテストの設計~履歴データの一般化・再識別~2018

    • Author(s)
      濱田 浩気 ,荒井 ひろみ ,小栗 秀暢 ,菊池 浩明,黒政 敦史,中川 裕志,西山 賢志郎 ,波多野 卓磨,村上 隆夫,山岡 裕司,山田 明,渡辺 知恵美
    • Organizer
      コンピュータセキュリティシンポジウム2018論文集
    • Data Source
      KAKENHI-PROJECT-18H04099
  • [Presentation] On the Anonymization of Differentially Private Location Obfuscation2018

    • Author(s)
      Yusuke Kawamoto, Takao Murakami
    • Organizer
      Proceedings of the 2018 International Symposium on Information Theory and Its Applications (ISITA 2018)
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-16K16069
  • [Presentation] 局所型差分プライバシーと分布推定への応用2018

    • Author(s)
      村上隆夫
    • Organizer
      PWS勉強会(PWS Seminar 2018)
    • Invited
    • Data Source
      KAKENHI-PROJECT-16K16069
  • [Presentation] Group Sparsity Tensor Factorization for De-anonymization of Mobility Traces2015

    • Author(s)
      Takao Murakami, Atsunori Kanemura, Hideitsu Hino
    • Organizer
      Proceedings of the 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom 2015) [Best Paper Award]
    • Place of Presentation
      Crowne Plaza hotel (Helsinki, Finland)
    • Year and Date
      2015-08-20
    • Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-26880030
  • [Presentation] 欠損位置情報の推定を伴うテンソル分解と個人識別攻撃への応用2015

    • Author(s)
      村上隆夫
    • Organizer
      コンピュータセキュリティシンポジウム2015(CSS 2015)
    • Place of Presentation
      長崎ブリックホール(長崎)
    • Year and Date
      2015-10-21
    • Data Source
      KAKENHI-PROJECT-26880030
  • [Presentation] Location Prediction Attacks Using Tensor Factorization and Optimal Defenses2014

    • Author(s)
      Takao Murakami, Hajime Watanabe
    • Organizer
      1st IEEE International Workshop on Big Data Security and Privacy (BDSP 2014)
    • Place of Presentation
      Hyatt Regency Bethesda (Washington DC, USA)
    • Year and Date
      2014-10-30
    • Data Source
      KAKENHI-PROJECT-26880030
  • [Presentation] テンソル分解を用いた位置情報プライバシーへの攻撃と対策

    • Author(s)
      村上隆夫,渡辺創
    • Organizer
      コンピュータセキュリティシンポジウム2014(CSS 2014)
    • Place of Presentation
      札幌コンベンションセンター (北海道)
    • Year and Date
      2014-10-22 – 2014-10-24
    • Data Source
      KAKENHI-PROJECT-26880030
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    # of Collaborated Products: 4 results
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    # of Collaborated Projects: 1 results
    # of Collaborated Products: 4 results
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    # of Collaborated Products: 1 results
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    # of Collaborated Products: 4 results

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