Koizumi Daiki

Faculty
Department of Information and Management Science
PositionAssociate ProfessorMail
BirthdayWebsite
TEL(代表)0134-27-5206
Message
Last Updated :2019/07/11

Researcher Profile and Settings

Profile & Settings

    ORCID ID:0000-0002-5302-5346

Degree

  • Doctor of Engineering

Association Memberships

  • International Society for Bayesian Analysis (ISBA)
  • The Institute of Electronics, Information and Communication Engineers (IEICE)

Committee Memberships

  •   2012 09  - 2013 04 , The 3rd International Conference on Computing and Artificial Intelligence (MIC-CAI2013), Technocal Program Comittee Member
  •   2012 09  - 2012 10 , The 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), Reviewer
  •   2009 01 , The Institute of Electronics, Information and Communication Engineers (IEICE), Referee, Communication Sciety

Academic & Professional Experience

  •   2015 04 ,  - 現在, Otaru University of Commerce, Faculty of Commerce, Department of Information and Management Science, Assosiate Professor
  •   2014 04 ,  - 2015 03 , Aoyama Gakuin University, College of Science and Engineering, Department of Electrical Engineering and Electronics, Research Associate
  •   2012 10 ,  - 現在, Waseda University, Research Insititute of Science and Engineering, Adjunct Researcher
  •   2003 04 ,  - 2007 03 , Graduate School of Science and Engineering, Waseda University, Department of Industrial and Management Systems Engineering, Doctor Program

Research Activities

Research Areas

  • Informatics, Statistical science, Bayesian Statistics, Statistical Decision Theory, Probabilistic Models
  • Informatics, Intelligent informatics, Machine Learning

Research Interests

    Bayesian Statistics, Bayes Decisoin Theory

Published Papers

  • Bayesian Estimation of Hard Disk Drives' Lifetime under Gamma Distribution
    Daiki Koizumi, International Society for Bayesian Analysis (ISBA) 2018 World Meeting, 06 , Refereed
  • On the Maximum Likelihood Estimation of Weibull Distribution with Lifetime Data of Hard Disk Drives
    Daiki Koizumi, Proceedings of the 2017 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'17), pp. 314 - 320, 07 , Refereed
  • On the Approximate Maximum Likelihood Estimation in Stochastic Model of SQL Injection Attacks
    Michio Sonoda, Takeshi Matsuda, and Daiki Koizumi, Proc. of 2016 IEEE International Conference on Systems, Man, and Cybanetics (SMC2016), pp. 802 - 807, 10 , Refereed, DOI
  • Method for Combining Paraconsistency and Probability in Temporal Reasoning
    Norihiro Kamide and Daiki Koizumi, Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol.20, (No.5) pp. 813 - 827, 09 , Refereed, DOI
  • On the Weibull Distribution with Nonstationary Scale Parameter
    Daiki Koizumi, Proc. of the International Society for Bayesian Analysis (ISBA) 2016 World Meeting, 06 , Refereed
  • Combining Paraconsistency and Probability in CTL
    Norihiro Kamide and Daiki Koizumi, Proc. of The 7th International Conference on Agents and Artificial Intelligence (ICAART) 2015, vol.2, pp.285 - 293, 01 , Refereed, DOI
  • SQL Injection Attack Detection with Contingency Table
    Daiki Koizumi, Takeshi Matsuda, and Hajime Jinushi, Proceeding of The International Symposium on Information Theory and Its Applications (ISITA2014), 10 , Refereed
  • Learning Styles for e-learning Systems over Virtual Desktop Infrastructure
    Shigeichi Hirasawa, Makoto Nakazawa, Daiki Koizumi, and Tomoko Kondo, Proceeding of 2014 IEEE International Conference on Systems, Man, and Cybernetics (SMC2014), pp.3248 - 3253, 10 , Refereed, DOI
  • Cross Site Scripting Attacks Detection Algorithm Based on the Appearance Position of Characters
    Takeshi Matsuda, Daiki Koizumi, and Michio Sonoda, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), pp.65 - 70, 10 , Refereed
  • On the Automatic Detection Algorithm of Cross Site Scripting (XSS) with the Non-Stationary Bernoulli Distribution
    Daiki Koizumi, Takeshi Matsuda, and Michio Sonoda, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), pp.131 - 135, 10 , Refereed
  • The Influence of QoS on e-Learning Environment under Virtual Desktop Infrastructure
    Makoto Nakazawa, Daiki Koizumi, and Shigeichi Hirasawa, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), pp.174 - 178, 10 , Refereed
  • A Learning Algorithm of Threshold Value on the Automatic Detection of SQL Injection Attack
    Daiki Koizumi, Takeshi Matsuda, Michio Sonoda, and Shigeichi Hirasawa, Proceeding of The 2012 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'12), Volume II, pp.933 - 937, 07 , Refereed
  • On the Loss Functions of Bayesian Forecasting for WWW Traffic based on Time Varying Poisson Distribution
    Daiki Koizumi, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, 06 , Refereed
  • Predictive Distribution of SQL Injection Attacks Detection Model
    Takeshi Matsuda, Michio Sonoda, Daiki Koizumi, and Shigeichi Hirasawa, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, 06 , Refereed
  • Markov Chain Monte Carlo Method Simulation of SQL Injection Attack Detection
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, and Shigeichi Hirasawa, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, 06 , Refereed
  • On Automatic Detection of SQL Injection Attacks by the Feature Extraction of the Single Character
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, and Shigeichi Hirasawa, Proceedings of the 4th international conference on Security of information and networks (SIN2011), pp. 81 - 86, 11 , Refereed, DOI
  • On Predictive Errors of SQL Injection Attack Detection by the Feature of the Single Character
    Takeshi Matsuda, Daiki Koizumi, Michio Sonoda, and Shigeichi Hirasawa, Proceeding of 2011 IEEE International Conference on Systems, Man, and Cybernetics (SMC2011), pp.1722 - 1727, 10 , Refereed, DOI
  • On the Bayesian Forecasting Algorithm under the Non-Stationary Binomial Distribution with the Hyper Parameter Estimation
    Daiki Koizumi, Tota Suko, and Toshiyasu Matsushima, Proceeding of Ninth Valencia International Meeting on Bayesian Statistics, p.167 - 168, 06 , Refereed
  • On the Hyperparameter Estimation of Time Varying Poisson Model for Bayesian WWW Traffic Forecasting
    Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Proceeding of 2nd International Workshop of the European Research Consortium on Infomatics and Mathematics (ERCIM) Working Group on Computing & Statistics, 10 , Refereed
  • Bayesian Forecasting of WWW Traffic on the Time Varying Poisson Model
    Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Proceeding of The 2009 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'09), Volume II, pp.683 - 689, 07 , Refereed
  • Reliability-Based Hybrid ARQ Scheme with Encoded Parity Bit Retransmissions and Message Passing Decoding
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, and Shigeichi Hirasawa, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E90-A, (9) 1736 - 1744, 09 , Refereed, DOI
  • A Note on Error Correction Schemes with a Feedback Channel
    Naoto Kobayashi, Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E89-A, (10) 2475 - 2480, 10 , Refereed, DOI

Misc

  • On the Applications of Weibull Distribution with Nonstationary Scale Parameter
    KOIZUMI, Daiki, Proceedings of the 2016 IEICE General Conference,   2016 03
  • On the Credible Interval Prediction of Web Traffic based on the Bayes Decision Theory
    Daiki Koizumi, and Toshiyasu Matsushima, Proceeding of the 38th Symposium on Information Theory and its Applications (SITA2015),   2015 11
  • On the Bayes Optimal Prediction of Time Series under a Nonstationary Weibull Distribution
    Daiki Koizumi and Toshiyasu Matsushima, IEICE Technical Report (IT2015-33), Vol.115, (No.137) pp.95 - 100,   2015 07
  • On the Blended Learning of Statistical Education with Digital Textbooks and Worksheets
    Daiki Koizumi, Tota Suko, and Shigeichi Hirasawa, Proceeding of the 77th National Convention of IPSJ,   2015 03
  • An Investigation into Reading Process in English by Making use of Detailed Learning Logs - (3) Learner Model in the Reading Process
    Makoto Nakazawa, Katsuyuki Umezawa, Manabu Kobayashi, Daiki Koizumi, Masayuki Goto, and Shigeichi Hirasawa, Proceeding of the 77th National Convention of IPSJ,   2015 03
  • On the Network Quality of Service and its Effect of Cyber Seminar English Courses based on the TV Conference System
    Makoto Nakazawa, Daiki Koizumi, Yusuke Kondo, and Michiko Nakano, Proceeding of the 76th National Convention of IPSJ,   2014 03
  • Muli-Point Distance Learning Interactive Seminars (World Englishes and Miscommunications) - A Practice of Flipped Classrooms using One-demand Lectures
    Michiko Nakano, Yusuke Kondo, Makoto Nakazawa, and Daiki Koizumi, Proceeding of the 76th National Convention of IPSJ,   2014 03
  • Experimental Development and Evaluation of Statistical Education Digital Textbook for Tablet Devices
    Daiki Koizumi, Tota Suko, and Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ,   2014 03
  • The e-learning materials production supporting system based on the existing PDF file
    Michitaka Aramoto, Daiki Koizumi, Tota Suko, and Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ,   2014 03
  • An Analysis of Learner Behavior Using Advanced Learning History
    Makoto Nakazawa, Daiki Koizumi, Masayuki Goto, and Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ,   2014 03
  • The Empirical Bayes Forecasting of Web Traffic on the Non-Stationary Poisson Distribution
    Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Proceeding of the 36th Symposium on Information Theory and its Applications (SITA2013),   2013 11
  • A Study on Learning Style in e-learning
    Shigeichi Hirasawa, Masayuki Goto, Makoto Nakazawa, Takashi Ishida, and Daiki Koizumi, National Conference of the Japan Society for Management Information (JASMIN) 2013 Autumn,   2013 10
  • Automatic Detection Method of SQL Injection Attack by a Classifier using Principal Component Analysis
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, and Jinhui Chao, Proceeding of Forum on Information Technology 2013, Vol. 4,   2013 08
  • Study on Appropriate Parameter Setting of Multimedia for e-Learning based on QoS
    Makoto Nakazawa, Daiki Koizumi, and Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ ,   2013 03
  • Experimental Development of Digital Textbook for University Education: Introduction to Statistics for Tablet Devices
    Daiki Koizumi, Tota Suko, and Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ,   2013 03
  • The Influence of Network QoS on Cross-Cultural Distance Learning (CCDL) of Waseda University
    Makoto Nakazawa, Daiki Koizumi, Yusuke Kondo, Michiko Nakano, and Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ ,   2013 03
  • On the Subjective Evaluation of Cross-Cultural Distance Learning (CCDL) in terms of Sound Quality, Latency, and Picture
    Daiki Koizumi, Makoto Nakazawa, Yusuke Kondo, Michiko Nakano, and Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ ,   2013 03
  • On the Learning Effect of Cross-Cultural Distance Learning (CCDL): Do the classes raise the students' social skills?
    Michiko Nakano, Daiki Koizumi, Shigeichi Hirasawa, and Yusuke Kondo, Proceeding of the 75th National Convention of IPSJ ,   2013 03
  • On the Learning Effect of Cross-Cultural Distance Learning (CCDL): Do the classes raise the students' motivation?
    Michiko Nakano, Daiki Koizumi, Shigeichi Hirasawa, and Yusuke Kondo, Proceeding of the 75th National Convention of IPSJ ,   2013 03
  • e-Learning using the virtual desktop - The Influence of QoS and Terminals
    Makoto Nakazawa, Daiki Koizumi, Katsuyuki Umezawa, and Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ,   2012 03
  • On e-Learning under the Virtual Desktop Infrastructure: long distance network access from abroad
    Daiki Koizumi, Takeshi Matsuda, Makoto Nakazawa, and Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ ,   2012 03
  • e-Learning on Virtual Desktop - A case study of English Language Learning
    Yusuke Kondo, Michiko Nakano, Shigeichi Hirasawa, Daiki Koizumi, and Tomohiko Saito, Proceeding of the 74th National Convention of IPSJ ,   2012 03
  • e-Learning using the virtual desktop - authentication method
    Katsuyuki Umezawa, Daiki Koizumi, Makoto Nakazawa, and Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ ,   2012 03
  • On the Threshold Learning Algorithm of SQL Injection Attack Detection by the Feature of Single Character
    Daiki Koizumi, Takeshi Matsuda, Michio Sonoda, and Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ ,   2012 03
  • Approach to the Feature Extraction of Attack Character String and the Automatic Detection of a Web Application Attack
    Mishio Sonoda, Takeshi Matsuda, Daiki Koizumi, Shigeichi Hirasawa, and Shigeo Tsujii, Proceeding of the 74th National Convention of IPSJ ,   2012 03
  • On the Automatic Detection of the SQL Injection Attacks by the Feature Extraction of the Single Character
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, Shigeichi Hirasawa, IPSJ SIG Technical Notes, vol. 49,   2011 03
  • On the Web Traffic Modeling under the Opening and Closing Services by the Non-Stationary Poisson Process
    Daiki Koizumi, Shunsuke Horii, and Toshiyasu Matsushima, IEICE Technical Report, vol.109, (no.449) pp. 343 - 347,   2010 03
  • A Numerical Evaluation Method of Eco-Drive: Standarlization of Automobiles by Virtual Vehicle Model
    Hitoshi Okamura, Daiki Koizumi, Shinji Koyano, and Hisashi Yokota, Annual Report of the Tokyo Metropolitan Research Institute for Environmental Protection,   2008 10
  • Text Data Compression by Bayes Coding Algorithm
    Akira Nakano, Daiki Koizumi, and Toshiyasu Matsushima, IPSJ SIG Notes, Vol.2007-AL-110, (No.5) pp.15 - 20,   2007 01
  • A Study of Bayes Coding for i.i.d. Sources with Consideration of the Generating Patterns of the Symbols in the Source Alphabet
    Ryunosuke Nanmo, Daiki Koizumi, and Toshiyasu Matsushima, IEICE Technical Report, vol. 106, (no. 184) pp. 25 - 30,   2006 07
  • The Reliability based Hybrid ARQ Scheme with both the Encoded Parity Bit Retransmissions and Message Passing Decoding
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Technical Report of IEICE (IT2006-17), vol. 106, (no. 60) pp. 23 - 28,   2006 05
  • A Note on HTTP Traffic Analysis of the Time Series Model with a Time Varying Density Parameter
    Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Proc. of the 28th Symposium on Information Theory and Its Applications (SITA2005), vol.2,   2005 12
  • A Study of Reliability Based Hybrid ARQ Schemes Using a Recursive Systematic Convolutional Code
    Naoto Kobayashi, Daiki Koizumi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Vol. 105, (No. 311) pp.7 - 11,   2005 09
  • A Study of Reliability Based Hybrid ARQ Scheme with Bitwise Posterior Probability Evaluation from Message Passing Algorithm
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, and Shigeichi Hirasawa, Technical Report of IEICE (IT2005-24), Vol. 105, (No. 85) pp.11 - 16,   2005 05
  • The Generalization of Bayesian Network's Deductive Method
    Daiki Koizumi, Yoshifumi Ukita, and Toshiyasu Matsushima, The 1999 Sigma Xi, The Scientific Research Society, Florida Tech Chapter,   1999 04
  • The Generalization of Bayesian Network's Deductive Method
    Daiki Koizumi, Yoshifumi Ukita, and Toshiyasu Matsushima, Technical Report of IEICE, vol. 98, (no. 211) pp.25 - 30,   1998 07

Awards & Honors

  •   2015 03 , Information Processing Society of Japan, Best Paper Award of the 77th National Convention of IPSJ
  •   2012 03 , Information Processing Society of Japan, Best Paper Award of the 74th National Convention of IPSJ
  •   2009 03 , Award for Lifelong Eduation of Mathematics, The Mathematics Certification Institute of Japan
  •   2008 03 , Award for Lifelong Eduation of Mathematics, The Mathematics Certification Institute of Japan
  •   2007 03 , Award for Lifelong Eduation of Mathematics, The Mathematics Certification Institute of Japan
  •   2006 03 , Award for Lifelong Eduation of Mathematics, The Mathematics Certification Institute of Japan


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