The 16th Korea-Japan(Japan-Korea) Database Workshop (KJDB 2021) will be held from December 03 to 04, 2021 at Takamiya Hotel Lucent in Yamagata, Japan. This workshop is an annual joint workshop with honorable scholars in Korea and Japan (and possibly other countries) for sharing the scope and the latest activities in new areas of of database and database-related technologies. Participants will engage in interactive discussions of their activities and priorities for database technologies and database-related technologies. We hope that the output of this workshop will serve as a basis for a roadmap of opportunities and initiatives for the upcoming years.


Free of charge for all the participants.
Please contact us (kjdb2021 [at] if you are a KJDB member and would like to participate onsite.



The following schedule is shown in Japan Standard Time (JST).

  • Time (JST)
  • 09:00-13:15
    Local Group Meeting
  • 13:15-13:30
  • 13:30-15:00
    Session 1: Theoretical Data Analysis (Chair: Prof. Ha-Joo Song (Pukyong National University))
  • Prof. Yasuko Matsubara (Osaka University) - Real-time Modeling and Forecasting for Big Time-series Data: Theory and Industrial Challenges
  • Prof. Sael Lee (Ajou University) - Deep Tree Models
  • Dr. Koji Zettsu (NICT) - Federated Cross-Data Analysis for Smart Data
  • 15:00-15:15
    Coffee Break
  • 15:15-16:45
    Session 2: Applied Data Analysis (Chair: Prof. Miyuki Nakano (TSUDA University))
  • Prof. Noseong Park (Yonsei University) - Diffusion Equation-based Collaborative Filtering in Recommender Systems
  • Prof. Shinsuke Nakajima (Kyoto Sangyo University) - Development of Location Based Applications to Support Physical and Mental Healthcare
  • Prof. Jinkyu Kim (Korea University) - Machine Learning for Self-driving Cars at Scale and Current Challenges
  • 16:45-17:00
    Coffee Break
  • 17:00-17:45
    Keynote Speech 1 (Chair: Prof. Yoshiharu Ishikawa (Nagoya University))
  • Prof. Hwanjo Yu (POSTECH) - When Deep Learning meets Big Data: Applications to Manufacturing and Recommender Systems
  • 17:45-18:45
    Session 3: Social Data (Chair: Prof. Young-Koo Lee (Kyung Hee University))
  • Prof. Masashi Toyoda (The University of Tokyo) - Expanding perspective with big data analysis for better societal behaviors
  • Prof. Kyungsik Han (Hanyang University) - Leveraging Stakeholders' Insights for the Development and Application of Computational Models: A Case Study in Fashion
  • 18:45-21:00
    Banquet & Virtual Tour
  • Time (JST)
  • 09:00-10:00
    Local Group Meeting
  • 10:00-10:45
    Keynote Speech 2 (Chair: Prof. Jae-Gil Lee (KAIST))
  • Prof. Hayato Yamana (Waseda University) - Toward Practical Use of Homomorphic Encryption
  • 10:45-11:45
    Session 4: Natural Language Processing (Chair: Prof. Toshiyuki Amagasa (University of Tsukuba))
  • Prof. Jinyoung Yeo (Yonsei University) - From Model-centric to Data-centric NLP
  • Prof. Takako Hashimoto (Chiba University of Commerce) - Structuring Topics on Large-Scale Twitter for Discovering People's Perceptions
  • 11:45-13:00
  • 13:00-15:00
    Session 5: Human Behavior (Chair: Prof. Steven Whang (KAIST))
  • Prof. Chanyoung Park (KAIST) - Graph-based Multi-aspect User Behavior Analysis
  • Dr. Yu Hirate (Rakuten Institute of Technology Worldwide) - Understanding customers with customer behavior data
  • Prof. Woohwan Jung (Hanyang University) - Dual Supervision: Relation Extraction with Distant Supervision and Human Annotation
  • Prof. Atsuyuki Morishima (University of Tsukuba) - Towards Earth-Scale Data Processing with Humans+AI Crowd
  • 15:00-16:30
    Panel Discussion - Next generation data science research after COVID &AI
  • Panelists:
    Prof. Masaru Kitsuregawa (The University of Tokyo)
    Prof. Katsumi Tanaka (The University of Fukuchiyama)
    Prof. Sang Kyun Cha (Seoul National University)
    Prof. Kyuseok Shim (Seoul National University)
  • 16:30-17:30
    Business Meeting

Organizing Committee

Honorary Co-Chairs

Kyu-Young Whang


Sang Kyun Cha

Seoul National University, Korea

Katsumi Tanaka

The University of Fukuchiyama, Japan

Masaru Kitsuregawa

The University of Tokyo, Japan

Hiroyuki Kitagawa

University of Tsukuba, Japan

General Co-Chairs

Jun-Ki Min

Korea Univ. of Technology & Education, Korea

Akiyo Nadamoto

Konan University, Japan

Organization Co-Chairs

Jongwuk Lee

Sungkyunkwan University, Korea

Kyoungsook Kim

National Institute of Advanced Industrial Science and Technology, Japan

Kazutoshi Sumiya

Kwansei Gakuin University, Japan

Program Co-Chairs

Ki Yong Lee

Sookmyung Women's University, Korea

Masato Oguchi

Ochanomizu University, Japan

Finance Chair

Kazutoshi Umemoto

The University of Tokyo, Japan

Local Chair

Shoko Wakamiya

Nara Institute of Science and Technology, Japan