College of Computing and Informatics - Department of Computer Science and Engineering

  • Assistant Professor Data Mining, Machine Learning, Natural Language Processing (NLP), Graph Neural Networks
  • PARK, HOGUN 홈페이지 바로가기
    Lab LearnData laboratory

Research Interest

Machine Learning, Explainable AI(XAI), Knowledge Discovery, Relational learning, Natural Language Processing(NLP), Graph Mining

Education

  • Ph.D. in Computer Science, Purdue University, USA

Experience

  • Research Scientist, Korea Institute of Science and Technology (KIST) , South Korea (2008-2013)
  • Technical Editor, United Nations Centre for Trade Facilitation and Electronic Business (UN/CEFACT) (2012-2013)
  • Research Intern, IBM Research, USA (2017, 2018)

Journal Articles

  • (2024)  Self-supervised Multimodal Graph Convolutional Network for collaborative filtering.  INFORMATION SCIENCES.  653,  1
  • (2023)  Generating post-hoc explanations for Skip-gram-based node embeddings by identifying important nodes with bridgeness.  NEURAL NETWORKS.  164,  1
  • (2023)  Incorporating experts' judgment into machine learning models.  EXPERT SYSTEMS WITH APPLICATIONS.  228,  120118
  • (2022)  Stretchable Array sEMG Sensor with Graph Neural Network for Static and Dynamic Gestures Recognition System.  NPJ FLEXIBLE ELECTRONICS.  1,  1
  • (2020)  A framework for understanding online group behaviors during a catastrophic event.  INTERNATIONAL JOURNAL OF INFORMATION MANAGEMENT.  51, 
  • (2014)  Real-time panoramic video streaming system with overlaid interface concept for social media.  MULTIMEDIA SYSTEMS.  20,  6
  • (2006)  A hybrid mood classification approach for blog text.  LECTURE NOTES IN COMPUTER SCIENCE.  4099, 

Patent/Intellectual Property

  • 컨텐츠 연관 정보 관리 장치 및 그 방법(Apparatus and Method for managing information related with content).  10-1427-7110000.  20140801.  KOREA, REPUBLIC OF
  • Highlight Providing System and Method based on Hot Topic Event Detection.  US20120079020A1.  20140527.  UNITED STATES
  • 제품 및 서비스 관련 리뷰에 대한 요약 정보 생성 시스템 및 방법.  10-2012-0003157.  20131011.  KOREA, REPUBLIC OF
  • SNS 정보를 이용한 파노라마 영상 인터페이스 제공 시스템 및 방법(Panoramic Video Interface Providing System and Method using SNS Information).  10-1295-0020000.  20130801.  KOREA, REPUBLIC OF
  • 실시간 고해상도 파노라마 영상 스트리밍 시스템 및 방법(Real-time Panorama Streaming System for High Resolution Panorama Videos and/or Images).  10-1282-9550000.  20130701.  KOREA, REPUBLIC OF
  • 멀티 앵글 기반의 미디어 자키를 이용한 실시간 개인 방송 시스템(Real Time Personal Broadcasting System using Media Jockey based on Multi-Angle).  10-1242-4780000.  20130306.  KOREA, REPUBLIC OF
  • 핫 토픽 이벤트 추출에 기반한 실시간 이벤트의 하이라이트 제공 시스템 및 이를 이용한 하이라이트 서비스 제공방법(HIGHLIGHT PROVIDING SYSTEM BASED ON HOT TOPIC EVENT EXTRACTION AND HIGHLIGHT SERVICE PROVIDING METHOD USING THE SAME).  10-1169-3770000.  20120723.  KOREA, REPUBLIC OF
  • 문맥 기반 광고 시스템 및 방법(System and method for advertising based on context).  10-1110-0220000.  20120119.  KOREA, REPUBLIC OF

Honors / Awards

  • Fulbright Fellowship, the U.S. Department of State (2013-2018)

Conference Paper

  • (2023)  Toward a Better Understanding of Loss Functions for Collaborative Filtering.  ACM Conference on Information and Knowledge Management.  UNITED KINGDOM
  • (2023)  Exploiting Relation-aware Attribute Representation Learning in Knowledge Graph Embedding for Numerical Reasoning.  ACM SIGKDD Conference on Knowledge Discovery and Data Mining.  UNITED STATES
  • (2023)  Dual Policy Learning for Aggregation Optimization in Graph Neural Network-based Recommender Systems.  International World Wide Web Conference.  UNITED STATES
  • (2020)  Role Equivalence Attention for Label Propagation in Graph Neural Networks.  Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD).  SINGAPORE
  • (2019)  Exploiting Interaction Links for Node Classification with Deep Graph Neural Networks.  International Joint Conference on Artificial Intelligence.  CHINA
  • (2018)  Learning Procedures from Text: Codifying How-to Procedures in Deep Neural Networks.  World-Wide Web Conference.  EU
  • (2010)  Sharing of Baseball Event through Social Media.  11th ACM SIGMM International Conference on Multimedia Information Retrieval (MIR 2010, now ACM ICMR).  UNITED STATES