Human-AI Interaction and Visualization


2022.11) We are recruiting UNIST/U-WURF interns for the winter break

(겨울방학 인턴 모집합니다. 상세 모집 분야:

2022.11) I serve as a member of Ulsan City Advisory Council

2022.9) Congratulations! Hyeshin Chu is awarded the travel grant for her presentation at CIKM, Atlanta, GA, USA

2022.9) I am visiting the Georgia Tech Visualization Lab (9/15) for a talk and research collaboration hosted by Prof. John Stasko.

2022.8) Congratulations! Our paper on AI-generated music is accepted for publication in ACM CIKM (top-tier, first author: Hyeshin Chu [MS student]). She will present the work at CIKM 22 (Atlanta, GA, USA).

2022.7) Congratulations! Our paper on exploring how an attention model predicts traffic speeds using visualization is accepted for publication in IEEE VIS 22 (top-tier, first author: Seungmin Jin, Hyunwook Lee[MS-PhD student]). They will present the work at VIS 22 (Oklahoma City, OK, USA).

2022.7) I serve as Paper co-chair of Visualization Notes at IEEE PacificVis 23.

2022.6) I am visiting the Data Institute for Societal Challenges at the University of Oklahoma for a talk and research collaboration (7/26~/7/29) hosted by Prof. David Ebert.

2022.5) I am visiting the Center for Accelerating Operational Efficiency at Arizona State University (ASU) for a talk and research collaboration (5/31-6/1), hosted by Prof. Ross Maciejewski.

2022.5) Congratulations! Our contributed talk proposal on face-embedded data visualization thumbnails of news articles is accepted by Computation+Journalism Conference (C+J). Joohee Kim (1st author, MS-Ph.D) will give a presentation at the conference.

2022.4) Congratulations! Hyunwook Lee (MS-Ph.D) and Joohee Kim (MS-Ph.D) have been awarded scholarship for research internship from Graduate School of AI, UNIST. They will do research internship in California, USA during 2022 Summer.

2022.3) Congratulations! Our paper on Modeling Video Browsing Behaviors and Video Exploration Interface Design is accepted for publication in CHI 22 Workshop--"Computational Approaches for Understanding, Generating, and Adapting User Interfaces" (First author: Joohee Kim, MS-Phd Student). She will present her work at CHI 22 (New Orleans, LA, USA).

2022.2) I serve on Technical Program Committees of IEEE VIS 22 and VIS 22 Short.

2022.1) Congratulations! Our paper on Data-driven Storytelling with AI is accepted for publication in IEEE TVCG (top-tier, first author: Minjeong Shin, Visiting Scholar). She will present her work at VIS 22 (Oklahoma City, OK, USA).

2022.1) Congratulations! Our paper on neural memory networks for traffic forecasting is accepted for publication in ICLR 22 (top-tier, first author: Hyunwook Lee [MS-Phd student]). He will present his work at the conference (virtual) in April.

2022.1) I am visiting UC Davis, CA, USA (2022/2~2023/2) for research collaboration with Dr. Kwan-Liu Ma (host).

2022.1) I serve on Technical Program Committee of a CHI'22 workshop--"Computational Approaches for Understanding, Generating, and Adapting User Interfaces" (workshop web page:

Sungahn Ko (고성안)

Associate Professor

Graduate School of Artificial Intelligence (AI)

School of Computer Science and Engineering

UNIST (Ulsan National Institute of Science & Technology), Korea

Office: Bldg. 106 401-10, Fax: 052-217-2128


  • Visiting Professor, UC Davis, CA, USA (2022.3~2023.2), hosted by Prof. Kwan-Liu Ma

  • Associate Professor, UNIST, Computer Science and Engineering, 2020~

  • Assistant Professor, UNIST, Electrical & Computer Engineering, 2016~2020

  • Software Engineer, VinSense (, 2015

  • Post-doc researcher, Purdue VACCINE (, 2015


  • Ph.D., Purdue Univ., 2014 (Advisor: Dr. David Ebert)

  • M.S., KAIST, 2008 (Advisor: Dr. Kyu Ho Park)

  • B.E., Korea Univ., 2006

Current Research Interests:

  • Deep Learning Model Research

    • Spatial-temporal Data Learning

      • Traffic AI & Mobility AI

        • Traffic Speed Prediction Model (ACM CIKM 20 [PDF], IEEE ICDE 21 [PDF])

          • Prediction with Neural Memory Networks (ICLR 22 [PDF] )

        • (Personalized) Travel Time Estimation

        • Passenger Demand Prediction

        • Demand Responsive Transport Route and Profit Estimation

    • Time-series Data Learning

      • Loss function design for time-series forecasting

    • Deep Learning for Recommender Systems

    • Natural Language Processing

    • Multi-Modal Data Learning

    • Data Mining

  • AI+Visual Analytics/Visualization

    • AI+Visualization System Design

      • Visual Traffic Analysis and Prediction (IEEE TVCG 20 [PDF] [Video] [Talk])

      • Visual Analysis of Attention Models (IEEE VIS 22 [PDF])

      • Visualization System for Learning History (IEEE TVCG 21 [PDF])

    • Visualization for Data-driven Journalism

    • Visualization for Storytelling

      • AI-driven Storytelling Visualization (IEEE TVCG 22 [PDF])

  • AI+HCI (Computational UI/UX/Design, Social/Mobile Computing, Computational Social Science)

    • Human-AI Interaction

      • Mobile GUI Design: ACM CHI 20 [PDF] [Preview] [Talk]

      • AI Music Generation: ACM CIKM 22 [PDF] [Talk]

      • Visual Computational Notebook Interface Design

      • Virtual Reality (VR) + NLP + Interaction

    • Human Behavior Analysis, Change, and Modeling

      • Impulse Purchase Prevention UI Design: WWW 21[PDF] [Slides]

      • Video Browsing Behavior Analysis and Prediction



MS-Phd: Hyunwook Lee, Joohee Kim

MS: Hongkyu Lim

Intern: Sungwook Kim, Duc Minh Nguyen, Jungwoo Moon

Research Programmer:

Seungmin Jin


Engineering Programming (2017 Spr)

Object-oriented programming (2016 Spr, 2017 Fall, 2018 Fall, 2019 Spr)

Information Visualization (2016 Fall, 2019 Fall, 2020 Spr, 2021 Spr), Human-Computer Interaction (2018 Spr, 2021 Spr)

Mobile Computing (2020 Fall)

Visual Analytics (2016 Fall, 2017 Fall), Advanced Human-Computer Interaction (2018 Spr, 2020 Spr), Advanced Information Visualization (2019 Spr, 2021 Fall)

*Technical Program Committee:

IEEE VIS (2022), VIS Short (2022)

IEEE Pacific Visualization (2020-2023), Visualization Notes Notes Co-Chair (2023), Visualization Notes Committee (2018-2022), Sponsorship chair (2017)

CHI Workshop on Computational UI Designs (2022)

Korea Computer Graphics Society, Executive Director (2021), Program Committee (2016--Present)

*Paper Reviewer:

IEEE VIS 2016-2022

ACM CHI Conference on Human Factors in Computing Systems (CHI), 2019, 2021-2023

IEEE VIS Short, 2020-2022

EG/VGTC Conference on Visualization (EuroVis), 2017, 2020-2022

IEEE Pacific Visualization 2017-2022

Computer Graphics Forum (CGF), 2021, 2022

Journal of Information Visualization (JVIS), 2022

ACM Symposium on User Interface Software and Technology (UIST), 2021

IEEE Transactions on Visualization and Computer Graphics (TVCG), 2021

ACM Conference on Computer-Supported Cooperative Work and Social Computing (CSCW), 2020, 2021

ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp/IWMUT), 2020, 2021

IEEE Transactions on Intelligent Transportation Systems (ITS), 2016, 2019, 2020

International AAAI Conference on Web and Social Media (ICWSM), 2021, 2023

IEEE Pervasive Computing, 2021

Hawaii International Conference on System Sciences (HICSS), 2020---2023

ACM Conference on Tangible, Embedded and Embodied Interaction (TEI), 2021

ACM Designing Interactive Systems (DIS), 2018

IEEE Computer Graphics and Applications (CG&A), 2017

Korean Institute of Information Scientists and Engineers (KIISE), 2021-2022

*Community Service

Ulsan City Advisory Council Member 울산광역시 정책 자문 위원회 자문 위원 (2023~)

Ulsan Smart City Project Committee Member 울산시 스마트도시사업협의회 자문 위원 (2021~)



UNIST Address: 401-10, Bldg. 106, UNIST-gil 50, Ulsan 44919, Republic of Korea.

우편번호 44919, 울산광역시 울주군 언양읍 유니스트길 50, 울산과학기술원, 106동 401-10호

Lab.: 106동 404호