NAKACHI Takayuki

写真a

Title

Professor

Researcher Number(JSPS Kakenhi)

00628472

Laboratory Address

1 Senbaru,Nishihara,Okinawa 903-0213

Mail Address

E-mail address

Laboratory Phone number

+81-98-895-8949

Homepage URL

https://researchmap.jp/takayuki-nakachi?lang=en

Profile

Dr. Takayuki Nakachi is a Professor of the Information Technology Center in University of the Ryukyus. He received the Ph.D. degree in electrical engineering from Keio University, Tokyo, Japan, in 1997. Since he joined Nippon Telegraph and Telephone Corporation (NTT) in 1997, he has been engaged in research on super-high-definition image/video coding, media transport technologies. From 2006 to 2007, he was a visiting scientist at Stanford University. He also actively participates in MPEG international standardization. His current research interests include secure and light-weight AI technologies based on sparse modeling, and communication science. He received the 26th TELECOM System Technology Award, the 6th Paper Award of Journal of Signal Processing, the Best Presentation Award of IEEE WSCE 2023, and the Best Paper Award of IEEE ISPACS2015. Dr. Nakachi is a member of the Institute of Electrical and Electronics Engineers the Institute of Electronics (IEEE) and the Information and Communication Engineers (IEICE) of Japan.
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Information Technology Center   Professor  

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Academic degree 【 display / non-display 】

  • Keio University -  Ph. D.

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External Career 【 display / non-display 】

  • 1997.04
    -
    2021.03

    NTT Network Innovation Laboratories, Nippon Telegraph and Telephone Corporation  

  • 2006.09
    -
    2007.08

    Visiting Scientist, Stanford University  

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Affiliated academic organizations 【 display / non-display 】

  • 　
    　
    　
     

    The Institute of Electronics, Information and Communication Engineers 

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    IEEE (Institute of Electrical and Electronics Engineers) 

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Research Interests 【 display / non-display 】

  • Edge AI Machine Learning

  • Secure Signal Processing

  • Super-high Definition Image/Video Coding

  • Channel Coding

  • Data Science

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Research Areas 【 display / non-display 】

  • Informatics / Information security

  • Informatics / Information network

  • Informatics / Intelligent informatics

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Published Papers 【 display / non-display 】

  • Stochastic Resource Allocation and Delay Analysis for Mobile Edge Computing Systems

    Yitu Wang, Wei Wang, Vincent K. N. Lau, Takayuki Nakachi, Zhaoyang Zhang

    IEEE Transactions on Communications   71 ( 7 ) 4018 - 4033   2023.07 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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      DOI

  • Pattern Discovery and Multi-slot-ahead Forecast of Network Traffic: A Revisiting to Gaussian Process

    Yitu Wang, Takayuki Nakachi, Wei Wang

    IEEE Transactions on Network and Service Management   20 ( 2 ) 1691 - 1706   2023.06 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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      DOI

  • Network Traffic Anomaly Detection: A Revisiting to Gaussian Process and Sparse Representation

    Yitu Wang, Takayuki Nakachi

    IEICE Trans. Fundamentals   E107-A ( 1 )   2024.01 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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      DOI

  • A Lightweight Spatio-Color Scrambled EtC System for JPEG XS Standard

    Takayuki Nakachi, Hiroyuki Kimiyama, Mitsuru Maruyama

    International Conference on Information and Computer Technologies (ICICT2024)     2024.03 [ Peer Review Accepted ]

    Type of publication: Research paper (international conference proceedings)

  • Uncompressed 8K video processing using SRv6-based service function chaining between Japan and the U.S

    Katsuhiro Sebayashi, Taisei Tanabe, Mitsuru Maruyama, Hajime Iwata, Hiroyuki Kimiyama, Takayuki Nakachi, Kouta Aoki, Yasuhisa Kato, Wataru Mishima, Yuta Fukagawa, Yasuhiro Ohara, Shigeo Urushidani, Takeshi Kurimoto, Eiji Kawai, Hideki Otsuki, Kazumasa Kobayashi

    The International Conference for High Performance Computing, Networking, Storage, and Analysis (SC23)     2023.11 [ Peer Review Accepted ]

    Type of publication: Research paper (international conference proceedings)

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Books 【 display / non-display 】

  • Anomaly Detection technology using Machine Learning and Deep Learning and Application Examples (in charge: Chap. 1 Sec. 7 Sparse modeling and its application to anomaly detection)

    Takayuki Nakachi, Others ( Part: Multiple Authorship )

    NTS Inc.  2022.12

  • Digital Signal Processing I/II

    John G, Proakis 他著, 浜田望, 田口亮, 近藤克哉, 仲地孝之 ( Part: Joint Translation )

    Kagaku Gijutsu Syuppan  2001

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Other Papers 【 display / non-display 】

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Presentations 【 display / non-display 】

  • [Invited Lecture] Small Data Driven Machine Learning and Secure Computation

    Takayuki Nakachi

    Visual Informatics Symposium at Institute of Informatics, Osaka Electro-Communication University)  2023.03  -  2023.03 

  • [Online Seminar] Small Data Machine Learning and Edge AI

    Takayuki Nakachi

    JOHOKIKO Seminar  2023.01  -  2023.01 

  • [Invited Talk] Application of Small Data-driven Machine Learning to State Estimation and Prediction of Nuclear Fusion Plasma

    Takayuki Nakachi

    3rd Plasma Informatics Workshop  2023.01  -  2023.01 

  • [Invited Talk] Ultra-high-definition Video Encoding and Transmission Technologies Using Edge Cloud for Beyond 5G Era

    Takayuki Nakachi

    Technology Research Group for Information Technology Centers  2022.09  -  2022.09 

  • [Invited Talk] Sparse Modeling in the AI Machine Learning Era

    Takayuki Nakachi

    The 35th Workshop on Circuits and Systems  2022.08  -  2022.08 

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Academic Awards 【 display / non-display 】

  • IEEE WSCE 2023 Best Presentation Award

    2023.09   IEEE   A Design Method for Golomb Coding in Layered Scrambled JPEG XS Scheme

    Winner: Takayuki Nakachi

  • 2022 IEICE EMM Study Group Excellence Research Award

    2023.03   IEICE EMM Study Group   RUT Computation of Gaussian Process Regression for Encrypting Input and Output Signals

    Winner: Takayuki Nakachi, Yitu Wang

  • IEEE ISPACS2015 Best Paper Award

    2015.11   IEEE   Layered Lossless Video Coding based on Slepian-Wolf Theorem

    Winner: Takayuki Nakachi

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Secure edge AI machine learning that works with small amounts of data

    Grant-in-Aid for Scientific Research(C)

    Project Year: 2022.04  -  2025.03 

    Total: 3,200,000 (YEN)

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Joint Research activities 【 display / non-display 】

  • Collaboration of Distributed Computing Resources within SINET6 Using SRv6 Service Function Chaining

    Project Year: 2024.04  -  2025.03 

    Direct: 1,500,000 (YEN)  Total: 1,500,000 (YEN)

  • Joint research on real space information understanding and wireless communication state estimation using small data-driven AI

    Project Year: 2023.09  -  2024.02 

    Investigator(s): Takayuki Nakachi  Member: Hiroyuki Ishihara (NTT Labs.) 

    Total: 1,700,000 (YEN)

  • Sparse Modeling/Gaussian Process for State Estimation and Prediction of Fusion Plasma

    Project Year: 2023.01  -  2024.02 

  • Media processing and transmission application technologies using small data driven AI

    Project Year: 2022.06  -  2023.02 

    Member: Hiroyuki Ishihara, et al. (NTT Labs.) 

    Total: 2,000,000 (YEN)

  • Machine learning works with small data and its applications to communications

    Project Year: 2021.12  -  2022.02 

    Investigator(s): Takayuki Nakachi  Member: Yitu Wang, et al. (NTT Labs.) 

    Total: 1,000,000 (YEN)

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SDGs 【 display / non-display 】

  • セキュアデータサイエンス

  • エッジAI機械学習

  • 超高精細映像符号化・伝送

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