Javad Rajabi

I am a CS PhD Student at University of Toronto (UofT), and a Faculty Affiliate Researcher at Vector Institute, supervised by Babak Taati. Currently, I am a research intern at Samsung AI Center Toronto.

Currently, my research focuses on inference-time scaling–guided generation for diffusion and flow-matching models, using targeted search, sampling, and guidance signals to steer generations toward higher quality or specific attributes. I am exploring novel guidance and steering signals (e.g., intrinsic confidence, perturbation-based methods, reward models, textual feedback, etc.) that can be used to score partial states or full trajectories.

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Research Interest

My research interests lie in generative modeling (flows and diffusion) for image/video/3D/4D generation and their potential to understand and construct sophisticated environments. I also have a deep interest in mathematics, optimization, and dynamic systems, particularly in their applications to generative models and machine learning.

News
Selected Publications
Token Perturbation Guidance for Diffusion Models
Javad Rajabi, Soroush Mehraban, Seyedmorteza Sadat, Babak Taati
NeurIPS 2025
TCARE-PD: A Multi-Site Anonymized Clinical Dataset for Parkinson's Disease Gait Assessment
Vida Adeli, Ivan Klabucar, Javad Rajabi, Benjamin Filtjens et al.
NeurIPS 2025
STARS: Self-supervised Tuning for 3D Action Recognition in Skeleton Sequences
Soroush Mehraban, Javad Rajabi, Babak Taati

Teaching Assistant
  • CSC420: Introduction to Image Understanding - Fall 2025
  • CSC420: Introduction to Image Understanding - Winter 2025
  • CSC263: Data Structures and Analysis - Winter 2025

Template adapted from Jon Barron's website.