- Dongseok Lee. KSIAM(Korean Society for Industrial and Applied Mathematics) Poster session (2023).
- Dongseok Lee. Guil High School Invited speaker for AI and Machine learning.(2023).
- Dongseok Lee, Chanyoung Kim. KSIAM(Korean Society for Industrial and Applied Mathematics) Poster session (2024).
- Dongseok Lee. CNU(Chungnam National University) Invited speaker for Image and Text classification and regression model. (2024).
- Dongseok Lee. 현대차 정몽구 재단과 함께 하는 대한수학회 2025 Young Mathematician Camp. TA. (2025).