Koizumi Daiki

Faculty
Department of Information and Management Science
PositionAssociate ProfessorMail
BirthdayWebsite
TEL(代表)0134-27-5206
Message
Last Updated :2020/02/15

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)

Academic & Professional Experience

  •   2015 04 ,  - 現在, Otaru University of Commerce, Faculty of Commerce, Department of Information and Management Science, Assosiate Professor
  •   2012 10 ,  - 現在, Waseda University, Research Insititute of Science and Engineering, Adjunct Researcher
  •   2014 04 ,  - 2015 03 , Aoyama Gakuin University, College of Science and Engineering, Department of Electrical Engineering and Electronics, Research Associate
  •   2005 04 ,  - 2014 03 , Tamagawa University, College of Education, Part-time Lecturer
  •   2007 04 ,  - 2010 03 , Tokyo Metropolitan Research Institute for Environmental Protection, Assistant Researcher
  •   2004 04 ,  - 2007 03 , Waseda University, Media Network Center, Research Associate
  •   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, Intelligent informatics, Machine Learning
  • Informatics, Statistical science, Bayesian Statistics, Statistical Decision Theory, Probabilistic Models

Research Interests

    Bayes Decisoin Theory, Bayesian Statistics

Published Papers

  • Bayesian Estimation of Hard Disk Drives' Lifetime under Gamma Distribution
    Daiki Koizumi, International Society for Bayesian Analysis (ISBA) 2018 World Meeting, 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), 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, Daiki Koizumi, Proc. of 2016 IEEE International Conference on Systems, Man, and Cybanetics (SMC2016), 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, Daiki Koizumi, Journal of Advanced Computational Intelligence and Intelligent Informatics, 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, Proc. of the International Society for Bayesian Analysis (ISBA) 2016 World Meeting, 06 , Refereed
  • On the Applications of Weibull Distribution with Nonstationary Scale Parameter
    KOIZUMI, Daiki, Proceedings of the 2016 IEICE General Conference, Proceedings of the 2016 IEICE General Conference, 03
  • On the Credible Interval Prediction of Web Traffic based on the Bayes Decision Theory
    Daiki Koizumi, Toshiyasu Matsushima, Proceeding of the 38th Symposium on Information Theory and its Applications (SITA2015), Proceeding of the 38th Symposium on Information Theory and its Applications (SITA2015), pp.235 - 240, 11
  • On the Bayes Optimal Prediction of Time Series under a Nonstationary Weibull Distribution
    Daiki Koizumi, Toshiyasu Matsushima, IEICE Technical Report (IT2015-33), IEICE Technical Report (IT2015-33), Vol.115, (No.137) pp.95 - 100, 07
  • 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, Shigeichi Hirasawa, Proceeding of the 77th National Convention of IPSJ, Proceeding of the 77th National Convention of IPSJ, pp.4-505 - 4-506, 03
  • On the Blended Learning of Statistical Education with Digital Textbooks and Worksheets
    Daiki Koizumi, Tota Suko, Shigeichi Hirasawa, Proceeding of the 77th National Convention of IPSJ, Proceeding of the 77th National Convention of IPSJ, pp.4-605 - 4-606, 03
  • Combining Paraconsistency and Probability in CTL
    Norihiro Kamide, Daiki Koizumi, Proc. of The 7th International Conference on Agents and Artificial Intelligence (ICAART) 2015, 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, Hajime Jinushi, Proceeding of The International Symposium on Information Theory and Its Applications (ISITA2014), 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, Tomoko Kondo, Proceeding of 2014 IEEE International Conference on Systems, Man, and Cybernetics (SMC2014), Proceeding of 2014 IEEE International Conference on Systems, Man, and Cybernetics (SMC2014), pp.3248 - 3253, 10 , Refereed, DOI
  • An Analysis of Learner Behavior Using Advanced Learning History
    Makoto Nakazawa, Daiki Koizumi, Masayuki Goto, Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ, Proceeding of the 76th National Convention of IPSJ, pp.4-357 - 4-358, 03
  • The e-learning materials production supporting system based on the existing PDF file
    Michitaka Aramoto, Daiki Koizumi, Tota Suko, Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ, Proceeding of the 76th National Convention of IPSJ, pp.4-359 - 4-360, 03
  • Experimental Development and Evaluation of Statistical Education Digital Textbook for Tablet Devices
    Daiki Koizumi, Tota Suko, Shigeichi Hirasawa, Proceeding of the 76th National Convention of IPSJ, Proceeding of the 76th National Convention of IPSJ, pp.4-361 - 4-362, 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, Daiki Koizumi, Proceeding of the 76th National Convention of IPSJ, Proceeding of the 76th National Convention of IPSJ, pp.4-481 - 4-482, 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, Michiko Nakano, Proceeding of the 76th National Convention of IPSJ, Proceeding of the 76th National Convention of IPSJ, pp.4-483 - 4-484, 03
  • The Empirical Bayes Forecasting of Web Traffic on the Non-Stationary Poisson Distribution
    Daiki Koizumi, Toshiyasu Matsushima, Shigeichi Hirasawa, Proceeding of the 36th Symposium on Information Theory and its Applications (SITA2013), Proceeding of the 36th Symposium on Information Theory and its Applications (SITA2013), pp.432 - 436, 11
  • A Study on Learning Style in e-learning
    Shigeichi Hirasawa, Masayuki Goto, Makoto Nakazawa, Takashi Ishida, Daiki Koizumi, National Conference of the Japan Society for Management Information (JASMIN) 2013 Autumn, National Conference of the Japan Society for Management Information (JASMIN) 2013 Autumn, pp.41 - 44, 10 , DOI
  • Automatic Detection Method of SQL Injection Attack by a Classifier using Principal Component Analysis
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, Jinhui Chao, Proceeding of Forum on Information Technology 2013, Proceeding of Forum on Information Technology 2013, Vol. 4, pp.187 - 192, 08
  • On the Learning Effect of Cross-Cultural Distance Learning (CCDL): Do the classes raise the students' motivation?
    Michiko Nakano, Daiki Koizumi, Shigeichi Hirasawa, Yusuke Kondo, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-395 - 4-396, 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, Yusuke Kondo, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-397 - 4-398, 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, Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-399 - 4-400, 03
  • The Influence of Network QoS on Cross-Cultural Distance Learning (CCDL) of Waseda University
    Makoto Nakazawa, Daiki Koizumi, Yusuke Kondo, Michiko Nakano, Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-401 - 4-402, 03
  • Experimental Development of Digital Textbook for University Education: Introduction to Statistics for Tablet Devices
    Daiki Koizumi, Tota Suko, Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-467 - 4-468, 03
  • Study on Appropriate Parameter Setting of Multimedia for e-Learning based on QoS
    Makoto Nakazawa, Daiki Koizumi, Shigeichi Hirasawa, Proceeding of the 75th National Convention of IPSJ, Proceeding of the 75th National Convention of IPSJ, pp.4-477 - 4-478, 03
  • The Influence of QoS on e-Learning Environment under Virtual Desktop Infrastructure
    Makoto Nakazawa, Daiki Koizumi, Shigeichi Hirasawa, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), pp.174 - 178, 10 , Refereed
  • Cross Site Scripting Attacks Detection Algorithm Based on the Appearance Position of Characters
    Takeshi Matsuda, Daiki Koizumi, Michio Sonoda, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), 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, Michio Sonoda, Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), Proc. in the 5th International Conference on Communications, Computers and Applications (MIC-CCA2012), pp.131 - 135, 10 , Refereed
  • A Learning Algorithm of Threshold Value on the Automatic Detection of SQL Injection Attack
    Daiki Koizumi, Takeshi Matsuda, Michio Sonoda, Shigeichi Hirasawa, Proceeding of The 2012 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'12), 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, 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, Shigeichi Hirasawa, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, 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, Shigeichi Hirasawa, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, Proceeding of the 11th World Meeting for the International Society for Bayesian Analysis (ISBA) 2012, 06 , Refereed
  • 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, Shigeo Tsujii, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 3-557 - 3-558, 03
  • On the Threshold Learning Algorithm of SQL Injection Attack Detection by the Feature of Single Character
    Daiki Koizumi, Takeshi Matsuda, Michio Sonoda, Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 3-559 - 3-560, 03
  • e-Learning using the virtual desktop - authentication method
    Katsuyuki Umezawa, Daiki Koizumi, Makoto Nakazawa, Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 4-451 - 4-452, 03
  • e-Learning on Virtual Desktop - A case study of English Language Learning
    Yusuke Kondo, Michiko Nakano, Shigeichi Hirasawa, Daiki Koizumi, Tomohiko Saito, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 4-475 - 4-476, 03
  • On e-Learning under the Virtual Desktop Infrastructure: long distance network access from abroad
    Daiki Koizumi, Takeshi Matsuda, Makoto Nakazawa, Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 4-479 - 4-480, 03
  • e-Learning using the virtual desktop - The Influence of QoS and Terminals
    Makoto Nakazawa, Daiki Koizumi, Katsuyuki Umezawa, Shigeichi Hirasawa, Proceeding of the 74th National Convention of IPSJ, Proceeding of the 74th National Convention of IPSJ, pp. 4-481 - 4-482, 03
  • On Automatic Detection of SQL Injection Attacks by the Feature Extraction of the Single Character
    Michio Sonoda, Takeshi Matsuda, Daiki Koizumi, Shigeichi Hirasawa, Proceedings of the 4th international conference on Security of information and networks (SIN2011), 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, Shigeichi Hirasawa, Proceeding of 2011 IEEE International Conference on Systems, Man, and Cybernetics (SMC2011), Proceeding of 2011 IEEE International Conference on Systems, Man, and Cybernetics (SMC2011), pp.1722 - 1727, 10 , Refereed, DOI
  • 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, IPSJ SIG Technical Notes, vol. 49, pp. 1 - 7, 03
  • On the Bayesian Forecasting Algorithm under the Non-Stationary Binomial Distribution with the Hyper Parameter Estimation
    Daiki Koizumi, Tota Suko, Toshiyasu Matsushima, Proceeding of Ninth Valencia International Meeting on Bayesian Statistics, Proceeding of Ninth Valencia International Meeting on Bayesian Statistics, p.167 - 168, 06 , Refereed
  • On the Web Traffic Modeling under the Opening and Closing Services by the Non-Stationary Poisson Process
    Daiki Koizumi, Shunsuke Horii, Toshiyasu Matsushima, IEICE Technical Report, IEICE Technical Report, vol.109, (no.449) pp. 343 - 347, 03
  • On the Hyperparameter Estimation of Time Varying Poisson Model for Bayesian WWW Traffic Forecasting
    Daiki Koizumi, Toshiyasu Matsushima, Shigeichi Hirasawa, Proceeding of 2nd International Workshop of the European Research Consortium on Infomatics and Mathematics (ERCIM) Working Group on Computing & Statistics, 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, Shigeichi Hirasawa, Proceeding of The 2009 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'09), Volume II, Proceeding of The 2009 International Conference on Parallel and Distributed Processing Techniques and Applications (PDPTA'09), Volume II, pp.683 - 689, 07 , Refereed
  • A Numerical Evaluation Method of Eco-Drive: Standarlization of Automobiles by Virtual Vehicle Model
    Hitoshi Okamura, Daiki Koizumi, Shinji Koyano, Hisashi Yokota, Annual Report of the Tokyo Metropolitan Research Institute for Environmental Protection, Annual Report of the Tokyo Metropolitan Research Institute for Environmental Protection, pp.3 - 9, 10
  • Reliability-Based Hybrid ARQ Scheme with Encoded Parity Bit Retransmissions and Message Passing Decoding
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, Shigeichi Hirasawa, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E90-A, (9) 1736 - 1744, 09 , Refereed, DOI
  • Text Data Compression by Bayes Coding Algorithm
    Akira Nakano, Daiki Koizumi, Toshiyasu Matsushima, IPSJ SIG Notes, IPSJ SIG Notes, Vol.2007-AL-110, (No.5) pp.15 - 20, 01
  • A Note on Error Correction Schemes with a Feedback Channel
    Naoto Kobayashi, Daiki Koizumi, Toshiyasu Matsushima, Shigeichi Hirasawa, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, E89-A, (10) 2475 - 2480, 10 , Refereed, DOI
  • 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, Toshiyasu Matsushima, IEICE Technical Report, IEICE Technical Report, vol. 106, (no. 184) pp. 25 - 30, 07
  • The Reliability based Hybrid ARQ Scheme with both the Encoded Parity Bit Retransmissions and Message Passing Decoding
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, Shigeichi Hirasawa, Technical Report of IEICE (IT2006-17), Technical Report of IEICE (IT2006-17), vol. 106, (no. 60) pp. 23 - 28, 05
  • A Note on HTTP Traffic Analysis of the Time Series Model with a Time Varying Density Parameter
    Daiki Koizumi, Toshiyasu Matsushima, Shigeichi Hirasawa, Proc. of the 28th Symposium on Information Theory and Its Applications (SITA2005), Proc. of the 28th Symposium on Information Theory and Its Applications (SITA2005), vol.2, pp.729 - 732, 12
  • A Study of Reliability Based Hybrid ARQ Schemes Using a Recursive Systematic Convolutional Code
    Naoto Kobayashi, Daiki Koizumi, Toshiyasu Matsushima, Shigeichi Hirasawa, Vol. 105, (No. 311) pp.7 - 11, 09
  • A Study of Reliability Based Hybrid ARQ Scheme with Bitwise Posterior Probability Evaluation from Message Passing Algorithm
    Daiki Koizumi, Naoto Kobayashi, Toshiyasu Matsushima, Shigeichi Hirasawa, Technical Report of IEICE (IT2005-24), Technical Report of IEICE (IT2005-24), Vol. 105, (No. 85) pp.11 - 16, 05
  • The Generalization of Bayesian Network's Deductive Method
    Daiki Koizumi, Yoshifumi Ukita, Toshiyasu Matsushima, The 1999 Sigma Xi, The Scientific Research Society, Florida Tech Chapter, The 1999 Sigma Xi, The Scientific Research Society, Florida Tech Chapter, 04
  • The Generalization of Bayesian Network's Deductive Method
    Daiki Koizumi, Yoshifumi Ukita, Toshiyasu Matsushima, Technical Report of IEICE, Technical Report of IEICE, vol. 98, (no. 211) pp.25 - 30, 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


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