Murakami Takao 村上隆夫

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 – 2025: 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

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

1. 松田隆宏 (60709492)

# of Collaborated Projects: 4 results

# of Collaborated Products: 1 results
2. Sakuma Jun (90376963)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
3. 日野英逸 (10580079)

# of Collaborated Projects: 3 results

# of Collaborated Products: 1 results
4. Attrapadung Nuttapong (40515300)

# of Collaborated Projects: 2 results

# of Collaborated Products: 1 results
5. 照屋唯紀 (20636972)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. 山田翔太 (70750834)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
7. SHIN SeongHan (20443195)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. Kikuchi Hiroaki (20266365)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 神嶌敏弘 (50356820)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. 兼村厚範 (50580297)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. 中川裕志 (20134893)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
12. 渡辺知恵美 (20362832)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
13. 木村映善 (20363244)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. 縫田光司 (20435762)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 花岡悟一郎 (30415731)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
16. 坂井祐介 (40750659)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. Schuldt Jacob (80750893)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
18. 清雄一 (20700157)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
19. 川本裕輔 (60760006)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
20. 南和宏 (10579410)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. 曹洋 (60836344)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
22. 大原一真 (80836479)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
23. 菊地浩明

# of Collaborated Projects: 0 results

# of Collaborated Products: 4 results

Murakami Takao 村上 隆夫

Research Projects

Research Products

Co-Researchers

Differential Privacy Technologies for Distributed Social GraphsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Agilecrypt Frameworks for Advanced Cryptographic Primitive Constructions, Compositions, and Conversions

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

A Study on Locally Private Algorithms for Large-Scale Personal DataPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study on anonymization algorithm and risk to be re-identified using open data competition

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Research on authentication and key management techniques based on weak secrets

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Statistical Security of Machine Learning

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Privacy Preserving Population Distribution Estimation without Trusted Third PartiesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

A Study on Anonymous Biometric Authentication for Privacy Protection in the Era of Big DataPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Designing a Location Trace Anonymization Contest2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Two-Dimensional Dynamic Fusion for Continuous Authentication2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Synthesizing differentially private location traces including co-locations2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Differentially Private Triangle and 4-Cycle Counting in the Shuffle Model2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Privacy-Preserving Multiple Tensor Factorization for Synthesizing Large-Scale Location Traces with Cluster-Specific Features2021

Author(s)

Journal Title

Data Source

[Journal Article] How to Handle Excessively Anonymized Datasets2018

Author(s)

Journal Title

DOI

Murakami Takao 村上隆夫