Sinjae Cason Kang

Hi 👋, I'm an undergrad @ KAIST EE, exploring Physical AI to develop self-improving robotic systems, advised by Prof. Kimin Lee. I also actively collaborate with Kaixin Wang and Li Zhao at Microsoft Research.

Email / Google Scholar / LinkedIn / X (Twitter) / Github

Education

Korea Advanced Institute of Science and Technology (KAIST) 2020 ~ Present
B.S. in Electrical Engineering (Major), Computer Science (Minor)

GPA: 4.06 / 4.3 (Major: 4.12 / 4.3)
Served as President of the KAIST EE Student Council (2022)
Including mandatory military service (2023 ~ 2025)

Publications

WarmPrior: Straightening Flow-Matching Policies with Temporal Priors
Sinjae Kang, Chanyoung Kim, Kaixin Wang, Li Zhao, Kimin Lee
Under review at CoRL 2026 / Accepted at SPIGM Workshop @ ICML 2026
project page / arXiv

Replacing the standard Gaussian source of flow-matching policies with a temporally grounded prior built from recent action history yields straighter probability paths, consistently improving manipulation success rates.

Quality over Quantity: Demonstration Curation via Influence Functions for Data-Centric Robot Learning
Haeone Lee, Taywon Min, Junsu Kim, Sinjae Kang, Fangchen Liu, Lerrel Pinto, Kimin Lee
ICRA (International Conference on Robotics and Automation), 2026
project page / arXiv

A systematic method for selecting high-quality robot demonstrations using influence functions, enhanced by trajectory-level aggregation and maximum validation influence to robustly identify informative state–action data.

Automated Skill Discovery for Language Agents through Exploration and Iterative Feedback
Yongjin Yang*, Sinjae Kang*, Juyong Lee, Dongjun Lee, Se-Young Yun^, Kimin Lee^
ArXiv Preprint, 2025
project page / arXiv

An automatic skill discovery framework for LLM-powered agents that generates feasible, environment-grounded training data via exploration-first, closed-loop interaction, enabling self-improving agent capabilities without human supervision.

Research Experiences

Research Intern 2025.03 ~ Present

KAIST AI · RISE Lab (Advisor: Kimin Lee)

Research Intern 2022.12 ~ 2023.03

KAIST AI · ALIN Lab (Advisor: Jinwoo Shin)

Honors & Awards

Presidential Science Scholarship (CS field) 2020 ~ Present

Korea's highest honor scholarship in the sciences, granted by the President

KFAS(Korea Foundation for Advanced Studies) Undergraduate Scholarship (人材林) 2023 ~ Present

KAIST Alumni Academic Scholarship 2022 ~ Present

Received from Hyunggyu Lim, former President of Samsung Electronics

KAIST Insung Award 2023

Recognized for excellence in academics and leadership

Miscellanea

Cute Nupzuki

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