Career Profile

My primary research area focuses on anomaly detection through transfer learning and knowledge distillation in situations where datasets are scarce in computer vision. I am researching methods to create uncertainty maps based on the inherent uncertainty in the network, derived from learned normal road situations, and optimize these to extract semantically useful pixel information for driver safety. I am interested in optimizing semantic segmentation networks that emerge from probabilistic models for abnormal situations captured by front-facing cameras in vehicles. Additionally, I have a significant interest in metaverse content creation based on various generative models. In particular, I have been highly interested in data-driven generative models that model the entire playable game framework, including user interactions, beyond asset creation.

Education

PhD in Computer Science

2019 -
Korea Advanced Institute of Science and Technology

During my doctoral research, I focused on the development and implementation of Explainable Artificial Intelligence (XAI) technologies across various sectors, including energy, education, and security. My projects ranged from integrating AI for anomaly detection and explanation in South Korea’s power systems, which facilitated the identification of abnormalities and enhanced system reliability, to leading the creation of a smart AI-based learning platform for English language acquisition, and developing virtual training environments for counter-terrorism with the Korean National Police Agency. These diverse applications not only highlighted the versatility of XAI in different operational contexts but also advanced the transparency and efficiency of AI systems in critical and everyday scenarios.

MEng in Computer Science

2016 - 2019
Korea Advanced Institute of Science and Technology

I conducted research to develop a deep learning-based language model for open-domain Korean natural language sentences. Utilizing this model, I was responsible for generating vectors for Korean sentences and calculating their similarities, thus providing an auxiliary decision-making tool for AI models. This effort was part of a larger project aimed at strengthening Korea’s AI ecosystem.

BE in Computer Science

2012 - 2016
Kyungpook National University

During my undergraduate studies, I demonstrated outstanding achievements across various major subjects, equipping myself with a comprehensive academic understanding and proficiency. Particularly, with a deep knowledge in computer science, I developed a strong interest and passion for graphics and computer game development. This interest led to the topic of my graduation thesis, where I presented an engaging game format by integrating cutting-edge graphic technology with original game design principles. Throughout this process, I extensively researched not only programming skills but also methods to optimize visual representation and user experience. The knowledge and experience gained during my undergraduate course provided me with the technical foundation and creative approach necessary to solve complex problems in software development.

Experiences

Participant

Mar 2016 - Aug 2019
Development of intelligent evolutionary WiseQA platform technology for human knowledge augmentation service, South Korea

I conducted research to develop a deep learning-based language model for open-domain Korean natural language sentences. Utilizing this model, I was responsible for generating vectors for Korean sentences and calculating their similarities, thus providing an auxiliary decision-making tool for AI models. This effort was part of a larger project aimed at strengthening Korea’s AI ecosystem.

Participant

Jan 2018 - Dec 2020
Development of XAI-based Technology for Smart Energy Platform, South Korea

The project was undertaken by the Korea Electric Power Corporation’s Power Research Institute, focusing on researching AI technologies related to energy. My role involved anomaly detection and explanation generation, proposing technology for identifying and generating explanations for abnormal situations in power system field situation images.

Project Lead Student

Jun 2021 - May 2022
Technology for Smart Home-Based AI Learning Assistant (AILA) Platform Based on Non-Contact English Learning Environment, South Korea

The project aims to develop the “AILA” platform for a non-contact English speaking learning environment. My role encompassed integrating and managing the Unity and chatbot development environments, along with providing a personalized experience through the fusion of 3D avatar chatbot technology.

Participant

Apr 2021 - Feb 2024
XR Counter-Terrorism Education and Training Test Bed Establishment, South Korea

In a research program supported by the Korean National Police Agency, I am involved in creating an application framework for generating virtual environments based on manuals and developing similarity-based manual analysis and simulation AI algorithms.

Visiting researcher

Mar 2020 - May 2020
KU-Center for Cyber-Physical Systems (C2PS), United Arab Emirates

The purpose of this project is to address the “black box” nature of deep learning methods in fields requiring reliability and transparency, such as the military, medical, and safety sectors. My work focused on image anomaly detection for industrial images based on generative models.

Career

Undergraduate research student of URP program - Participated in undergraduate research at Kyungpook National University, focusing on projects from Mar 2013 to Dec 2013.
Vise-chair of ACM-ICPC club - Led the ACM-ICPC club at Kyungpook National University as Vice-chair from Mar 2015 to Dec 2015.
Participant of ACM-ICPC 2013 Daejeon Regional - Competed in the ACM-ICPC 2013 Daejeon Regional event in September 2015.
Teaching Assistant at KAIST - Served as a Teaching Assistant for multiple courses at KAIST, including Artificial Intelligence and Machine Learning, Discrete Mathematics, and Special Topics in Computer Science from 2018 to 2021.
Visiting Researcher, KU-Center for Cyber-Physical System - Worked as a Visiting Researcher at the KU-Center for Cyber-Physical Systems from Feb 2020 to Mar 2020, focusing on advanced research in cyber-physical systems.

Publications

  • A Simple Debiasing Framework for Out-of-Distribution Detection in Human Action Recognition
  • Minho Sim, YoungJun Lee, Dongkun Lee, Ho-Jin Choi
    Proceedings of the 26th European Conference on Artificial Intelligence ECAI, 2023
  • Road anomaly segmentation based on pixel-wise logit variance with iterative background highlighting
  • Dongkun Lee, Han-Gyu Kim, Ho-Jin Choi
    2023 IEEE International Conference on Robotics and Automation (ICRA), pp. 9274–9280, IEEE, 2023
  • Multivariate time-series anomaly detection using seqvae-cnn hybrid model
  • Tae-Sung Choi, Dongkun Lee, Yuchae Jung, Ho-Jin Choi
    2022 International Conference on Information Networking (ICOIN), pp. 250–253, IEEE, 2022
  • 시나리오 기반 군사 모의 자동화를 위한 군사배치 생성기 및 시뮬레이션 기반 자동평가
  • 이동건, 최호진
    한국정보과학회 학술발표논문집, pp. 887–889, 2021
  • Novel eeg sensor-based risk framework for the detection of insider threats in safety critical industrial infrastructure
  • Ahmed Y. Al Hammadi, Dongkun Lee, Chan Yeob Yeun, Ernesto Damiani, Song-Kyoo Kim, Paul D. Yoo, Ho-Jin Choi
    IEEE Access, vol. 8, pp. 206222–206234, 2020
  • 대화 속 질문 유사성 분석을 위한 문장 임베딩 자질의 자동 추출방법
  • 오교중, 이동건, 임채균, 최호진
    정보과학회논문지, vol. 46, no. 9, pp. 909–918, 2019
  • Out-of-domain detection method based on sentence distance for dialogue systems
  • Kyo-Joong Oh, Dongkun Lee, Chanyong Park, Young-Seob Jeong, Sawook Hong, Sungtae Kwon, Ho-Jin Choi
    2018 IEEE International Conference on Big Data and Smart Computing (BigComp), pp. 673–676, IEEE, 2018
  • Text to game characterization: a starting point for generative adversarial video composition
  • Dongkun Lee, Ho-Jin Choi
    2018 IEEE International Conference on Big Data and Smart Computing (BigComp), pp. 717–720, IEEE, 2018
  • RNN 문장 임베딩과 ELM 알고리즘을 이용한 금융 도메인 고객상담 대화 도메인 및 화행분류 방법
  • 오교중, 박찬용, 이동건, 임채균, 최호진
    한국어정보학회 학술대회, pp. 220–224, 2017
  • A chatbot for psychiatric counseling in mental health-care service based on emotional dialogue analysis and sentence generation
  • Kyo-Joong Oh, Dongkun Lee, Byungsoo Ko, Ho-Jin Choi
    2017 18th IEEE International Conference on Mobile Data Management (MDM), pp. 371–375, IEEE, 2017
  • 설명가능한 인공지능을 이용한 2 차원 배관설비 환경에서의 고장 예측
  • 이동건, 최호진
    한국지능정보시스템학회 학술대회논문집, pp. 12–13, 2017
  • The chatbot feels you-a counseling service using emotional response generation
  • Dongkun Lee, Kyo-Joong Oh, Ho-Jin Choi
    2017 IEEE International Conference on Big Data and Smart Computing (BigComp), pp. 437–440, IEEE, 2017
  • 대화 문장의 기계학습 기반 개체명 경계 인식 및 미등록어 개체명 사전 확장에 관한 연구
  • 오교중, 이동건, 최호진, 권성태, 홍사욱
    한국정보과학회 학술발표논문집, pp. 657–659, 2017
  • RNN 을 이용한 한국어 문장 간 구문 유사도 측정
  • 오교중, 이동건, 최호진
    한국컴퓨터종합학술대회 2016, 한국정보과학회, 2016
  • 함의 자질 추출을 위한 형태소 임베딩
  • 오교중, 이동건, 임채균, 허정, 최호진
    한국컴퓨터종합학술대회 2016, 한국정보과학회, 2016
  • Measuring sentence similarity using morpheme embedding model and GRU encoder for question and answering system
  • Dongkun Lee, Kyo-Joong Oh, Ho-Jin Choi, Jung Heo
    Annual Conference on Human and Language Technology, pp. 128–133, Human and Language Technology, 2016
  • Wi-Fi Direct 망에서 다수의 단말에게 동영상 스트리밍을 위한 안드로이드 라이브러리 개발
  • 박찬제, 김동우, 김성욱, 이동건, 유홍석, Ankita Goyal, 김동균, 양은주
    한국정보처리학회 학술대회논문집, pp. 253–256, 한국정보처리학회, 2013

    Skills & Proficiency

    Python

    Unity

    C/C++

    C#

    JAVA

    Photoshop