Sejoon Jun

I am a 4th-year undergraduate student at KAIST. My research interests lie in world models and robotics, and I am broadly excited about building intelligent systems that can perceive, predict, and interact with the physical world.

Currently, I am a Visiting Researcher at Northeastern University in Boston, working under the supervision of Prof. Lorenzo Torresani. At the same time, I am a research collaborator with Prof. Yilun Du at Harvard, actively working with Dr. Weirui Ye at MIT.

Sejoon Jun

Publications

TBS teaser

Temporal Backtracking Search for Test-time Generative Video Reasoning

Sejoon Jun, Zheng Ding, Chloe H. Su, Weirui Ye, Yilun Du

Preprint, 2026

Project Page PDF

TrajPilot teaser

How You Move Tells What You'll Do: Trajectory-Conditioned Egocentric Prediction

Sejoon Jun, Hai Nguyen-Truong, Luigi Seminara, Lorenzo Torresani

arXiv preprint, 2026

Project Page arXiv

STG overview

Training-Free Safe Text Embedding Guidance for Text-to-Image Diffusion Models

Byeonghu Na, Mina Kang, Jiseok Kwak, Minsang Park, Jiwoo Shin, Sejoon Jun, Gayoung Lee, Jin-Hwa Kim, Il-Chul Moon

NeurIPS 2025

arXiv OpenReview Code

News

2026
Started a research visit at Northeastern University under the supervision of Prof. Lorenzo Torresani.
2026
Began collaborating with Prof. Yilun Du at Harvard and Dr. Weirui Ye at MIT on research in world models.
Sep 2025
Our paper "Training-Free Safe Text Embedding Guidance for Text-to-Image Diffusion Models" was accepted at NeurIPS 2025.