Professor

About

  • I am an assistant professor in the Department of Industrial Engineering and Systems and also affiliated with the Graduate School of AI at KAIST.
  • Before joining KAIST, I was a postdoctoral research fellow in Computer Science at University of Illinois at Urbana-Champaign. I obtained my Ph.D degree in Computer Science and Engineering from Pohang University of Science and Technology (POSTECH), and B.S. in Computer Science from Sogang University.

Research Interest

(Click here for more detail)

  • Multimodal Data Mining, Applied Machine Learning, Deep Learning
    • Mining meaningful knowledge from multimodal data to develop artificial intelligence solutions for various real-world applications across different disciplines.
    • Keywords: Multimodal user behavior analysis, Machine learning for graphs, Graph neural network, Graph representation learning
    • Application domains: Recommendation system, Social network analysis, Fraud detection, Sentiment analysis, Purchase/Click prediction, Anomaly detection, Knowlede-graph construction, Time-series and spatio-temporal anlaysis, etc.

Announcements

  • I am actively seeking for passionate and self-motivated Ph.D. students, MS students, and postdocs. If you are interested, send me an email with your interests, CV, and transcript.
  • I am also looking for undergraduate students who are interested in doing internship in our lab. If you are interested, send me an email with your interests, CV, and transcript.

News

  • (2021.02) I gave a talk at 2021 한국인공지능학회 동계단기강좌 [Slide].
  • (2021.01) A paper got accepted at WWW 2021.
  • (2020.11) I gave a talk at Korea Military Academy.
  • (2020.11) I joined KAIST as an assistant professor.
  • (2020.09) A paper got accepted at ICDM 2020.
  • (2020.07) I was invited as a program commettee member of AAAI 2021.
  • (2020.06) I was invited as a program commettee member of WWW 2021.
  • (2020.02) A paper got accepted at KDD 2020 (research track).
  • (2019.11) A paper got accepted at AAAI 2020.
  • (2019.05) Two papers got accepted at CIKM 2019.
  • (2019.01) I joined University of Illinois at Urbana-Champaign as a postdoctoral research fellow.
  • (2018.10) I successfully defended Ph.D thesis.

Selected Presentation Slide

Work Experience

  • KAIST (Korea Advanced Institute of Science and Technology), Daejeon, South Korea
    • Assistant Professor (2020.11 - Present)
  • University of Illinois at Urbana-Champaign, IL, USA
    • Postdoctoral Research Fellow in Computer Science Department (2019.3 - 2020.10)
    • Host: Prof. Jiawei Han
  • Microsoft Research, Beijing, China
  • NAVER, Seongnam, South Korea

Education

  • POSTECH (Pohang University of Science and Technology)
    • Ph.D. in Computer Science and Engineering (2014.3 - 2019.2)
    • Dissertation: Recommendation Framework via Matrix Factorization and Translation
    • Advisor: Prof. Hwanjo Yu
  • Sogang University
    • B.S. in Computer Science and Engineering (2008.03 - 2014. 2)
    • Graduated with Honors (Magma Cum Laude)

Awards

  • ICDM 2018 Travel Award (2018)
  • Award of excellence, Microsoft Research Asia Internship Program, Beijing, China (2017)
  • Naver Ph.D Fellowship (2016)
  • Top 1.1% in RecSys Challenge (2015)

Academic Services

Program Commettee (Conference)

  • International Conference on Database Systems for Advanced Applications (DASFAA), 2021
  • AAAI Conference on Artificial Intelligence (AAAI), 2021
  • The Web Conference (WWW), 2020, 2021
  • The Web Conference (WWW) Poster Track, 2020
  • ACM International Conference on Information and Knowledge Management (CIKM) Short Paper Track, 2020
  • IEEE International Conference on Big Data (BigData) 2020, 2021
  • ECML-PKDD Applied Data Science Track, and Demo Track, 2020
  • International Conference on Internet and Web Applications and Services (ICIW), 2017, 2018

External Reviewer (Conference)

  • ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD) 2020
  • The Web Conference (WWW), 2017, 2018, 2019
  • IEEE International Conference on Big Data and Smart Computing (BigComp), 2017
  • AAAI Conference on Artificial Intelligence (AAAI), 2017
  • ACM International Conference on Information and Knowledge Management (CIKM), 2016, 2017, 2018

Journal Reviewer

  • Entropy, MDPI
  • Transactions on Asian and Low-Resource Language Information Processing, ACM
  • Journal of King Saud University, Elsevier
  • Reliability Engineering & System Safety, Elsevier
  • Applied Soft Computing, Elsevier
  • Data & Knowledge Engineering, Elsevier
  • Pattern Recognition, Elsevier
  • Information Sciences, Elsevier
  • Expert Systems with Applications, Elsevier
  • Computational and Structural Biotechnology Journal, Elsevier
  • Applied Intelligence (APIN), Springer
  • GeoInformatica, Springer
  • ACM Transactions on Knowledge and Data Engineering (TKDE)
  • ACM Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)
  • ACM Transactions on Intelligent Systems and Technology (TIST)
  • IEEE Access
  • PLOS ONE, Public Library of Science
  • Concurrency and Computation: Practice and Experience, John Wiley and Sons Ltd
  • Applied Computational Intelligence and Soft Computing, Hindawi
  • Mathematical Problems in Engineering, Hindawi