TAKUMI Ichi

写真a

Affiliation Department etc.

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Title

Vice President

Mail Address

E-mail address

Graduating School

  •  
    -
    1982.03

    Nagoya Institute of Technology   Faculty of Engineering   Department of Electronics   Graduated

Graduate School

  •  
    -
    1984.03

    Nagoya Institute of Technology  Graduate School, Division of Engineering  Department of ElectronicsMaster's Course  Completed

Degree

  • Nagoya Institute of Technology -  Master of Engineering

  • Nagoya Institute of Technology -  Doctor (Engineering)

Field of expertise (Grants-in-aid for Scientific Research classification)

  • Natural disaster / Disaster prevention science

  • Communication/Network engineering

  • Measurement engineering

  • Intelligent informatics

  • Theory of informatics

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Research Career

  • Studies on digital signal prosessing

    Collaboration in Japan   (not selected)  

    Project Year:   - 

  • Studies on information security

    Individual   (not selected)  

    Project Year:   - 

  • Studies on coding theory

    Individual   (not selected)  

    Project Year:   - 

  • Studies on quantum information

    Collaboration in Japan   (not selected)  

    Project Year:   - 

  • Studies on the relationship between crustal activity and electric-magnetic radiation

    Collaboration in Japan   (not selected)  

    Project Year:   - 

Papers

  • Usefulness of Quasi-L1 Norm-Based Nonnegative Matrix Factorization Algorithm to Estimate Background Signal using Environmental Electromagnetic Field Measurements at ELF Band

    Mouri, Motoaki; Takumi, Ichi; Yasukawa, Hiroshi; Cichocki, Andrzej

    IEEJ Transactions on Fundamentals and Materials ( The Institute of Electrical Engineers of Japan )  136 ( 5 ) 241 - 251   2016.05  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

    Our research group has been measuring Extremely Low Frequency (ELF) magnetic fields across Japan. The ELF measurements are mixtures of signals associated with various natural or artificial phenomena. When focus on specific factor, the signals related to other factors distort analysis result. In order to get specific information accurately, we should estimate desired signals or eliminate undesired signals. We found that Image Space Reconstruction Algorithm (ISRA), one of the Nonnegative Matrix Factorization (NMF) algorithm, works better than independent component analysis to estimate the ELF background signal. However, ISRA sometimes failed to estimate the weight vector for the background signal. We considered that ISRA has weakness for outliers and sparse signals because ISRA is based on minimizing L2 (Frobenius) norm between input matrix and projected matrix from estimated matrices. In order to improve robustness, we developed new methods based on minimizing quasi-L1 norm (QL1-NMF). In the experiment using generated signals and ELF observed signals which had outliers, the proposed method estimate background signal more accurately than ISRA and other L1 norm based algorithms.


  • Design and Implementation of Open-Campus Event System with Voice Interaction Agent

    Takahiro Uchiya, Masaki Yoshida, Daisuke Yamamoto, Ryota Nishimura, Ichi Takumi

    Journal of Mobile Multimedia   11 ( 3&4 ) 237 - 250   2015.11  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Multiagent-based distributed backup system for individuals

    T. Uchiya, M. Shibakawa, I. Takumi , T. Kinoshita

    Proc. IEEE/ACIS 14th International Conference on Computer and Information Science (ICIS), 2015 ( IEEE )    361 - 366   2015.06  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • The Background Noise Estimation in the ELF Electromagnetic Wave Data Using Outer Product Expansion with Non-linear Filter

    Akitoshi ITAI, Hiroshi YASUKAWA, Ichi TAKUMI, Masayasu HATA

    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E97-A ( 11 ) 2114 - 2120   2014.11  [Refereed]

    Research paper (scientific journal)   Multiple Authorship

  • Voice Interaction System with 3D-CG Virtual Agent for Stand-alone Smartphones

    Daisuke Yamamoto, Keiichiro Oura, Ryota Nishimura, Takahiro Uchiya, Akinobu Lee, Ichi Takumi,Keiichi Tokuda

    Proc. of the 2nd International Conference on Human Agent Interaction, ACM digital library     323 - 330   2014.10  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • A VoIP-based Voice Interaction System for a Virtual Telephone Operator Using Video Calls

    Ryota Nishimura, Koji Sugioka, Daisuke Yamamoto, Takahiro Uchiya, Ichi Takumi

    Proc. of the IEEE 3rd Global Conference on Consumer Electronics (GCCE 2014)     529 - 532   2014.10  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • A study of using nonnegative matrix factorization to detect solder-voids from radiographic images of solder

    M.Mouri, Y.Kato, H.Yasukawa, I.Takumi

    Proc. IEEE 23rd International Symposium on Industrial Electronics (ISIE)     1074 - 1079   2014.06  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • Use of nonnegative matrix factorization and radiographic imaging to detect solder-voids

    Motoaki Mouri, Yoichi Kato, Hiroshi Yasukawa, Ichi Takumi

    2013 International Workshop on Smart Info-Media System in Asia     280 - 285   2013.09  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • IDEAL: Interactive Design Environment for Agent System with Learning Mechanism

    Takahiro Uchiya, Syo Itazuro, Ichi Takumi, Tetsuo Kinoshita

    Proc. of the 12th IEEE International Conference on Cognitive Informatics and Cognitive     153 - 160   2013.07  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

  • Design and Implementation of Multiagent-based Distributed Backup System

    Motohiro Shibakawa, Takahiro Uchiya, Ichi Takumi, Tetsuo Kinoshita

    Proc. of the 12th IEEE/ACIS International Conference on Computer and Information     241 - 246   2013.06  [Refereed]

    Research paper (international conference proceedings)   Multiple Authorship

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Books

  • Information Theory

    I.Takumi,H.Kamabe,T.Wadayama,T.Usuda,K.Mouri,H.Matsui,E.Okamoto,Y.Iwanami (Part: Joint Editing and Writing )

    Ohmsha  2011.09 ISBN: 978-4-274-20926-0

Presentations

  • Development of Open-Campus Event System Using Voice Interaction Agent

    T. Uchiya, M. Yoshida, D. Yamamoto, I. Takumi

    18th International Conference on Network-Based Information Systems (NBiS), 2015  (Taipei)  2015.09  -  2015.09 

  • Development Tool of Q-Nash Learning Agent for Intelligent System

    M. Hibino, T. Uchiya, I. Takumi, T. Kinoshita

    18th International Conference on Network-Based Information Systems (NBiS), 2015  (Taipei )  2015.09  -  2015.09 

  • Crowdsourcing Environment to Create Voice Interaction Scenario of Spoken Dialogue System

    Y. Matsushita, T. Uchiya, R. Nishimuray, D. Yamamoto, I. Takumi  [Invited]

    18th International Conference on Network-Based Information Systems (NBiS), 2015  (Taipei )  2015.09  -  2015.09 

  • Revising algorithm for nonnegative matrix factorization based on minimizing quasi-L1 norm

    Motoaki Mouri, Ichi Takumi, Hiroshi Yasukawa and Andrzej Cichocki

    2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)  (Ishigaki, Japan)  2014.11  -  2014.11  IEEE

  • Development of a Dialogue Scenario Editor on a Web Browser for a Spoken Dialogue System

    Ryota Nishimura, Daisuke Yamamoto, Takahiro Uchiya, Ichi Takumi

    2nd International Conference on Human Agent Interaction  (Tsukuba, Japan)  2014.10  -  2014.10  ACM

  • SSVEPのターゲット周波数とその周辺周波数の関連性について

    船瀬 新王,板井 陽俊,内匠 逸

    日本生体医工学会東海支部大会  (名古屋市)  2014.10  -  2014.10  日本生体医工学会

  • Construction of Crowdsourcing Environment for Creation of Voice Interaction Scenario

    Yuichi Matsushita,Takahiro Uchiya,Ryota Nishimura,Daisuke Yamamoto,Takumi Ichi

    IEEE 3rd Global Conference on Consumer Electronics (GCCE 2014)  (Makuhari, Japan)  2014.10  -  2014.10  IEEE

  • Experiment of Indoor Position Presumption Based on RSSI of Bluetooth LE Beacon

    Shinsuke Kajioka, Tomoya Mori, Takahiro Uchiya, Ichi Takumi, Hiroshi Matsuo

    IEEE 3rd Global Conference on Consumer Electronics (GCCE)  (Makuhari, Japan)  2014.10  -  2014.10  IEEE

  • Changing power spectrum of SSVEP in blinking

    Arao Funase, Ichi Takumi

    Neuroscience 2014  (PACIFICO YOKOHAMA, Yokahama, Japan)  2014.09  -  2014.09  Japan Neuroscience Society

  • Proposal of voice control-based interactive design method of agent system

    Takahiro Uchiya, Daisuke Yamamoto, Ryota Nishimura, Ichi Takumi, Tetsuo Kinoshita

    2014 IEEE 13th International Conference on Cognitive Informatics & Cognitive Computing (ICCI*CC)  (London, U.K.)  2014.08  -  2014.08  IEEE

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