About me

I’m Jiaxing Zhang, a Research Scientist at TikTok in Bellevue, WA.

I received my PhD in Informatics from New Jersey Institute of Technology in May 2025, where I was advised by Prof. Hua Wei and Prof. Michael Lee. I obtained my bachelor’s degree in Computer Science (Honored Science Program) from Xi’an Jiaotong University in 2020.

Research

My research goal is to build reliable and efficient foundation models that preserve and exploit decision-critical information across multimodal and structured data, from training and adaptation through deployment.

• Trustworthy AI for Graph Learning and Structured Reasoning: developing faithful and reliable explanations, diagnostics, and reasoning methods for graph and structured models, with an emphasis on explanation fidelity, confidence awareness, and robustness under distribution shift.
• Efficient Multimodal Training, Adaptation, and Deployment: building efficient multimodal foundation models for content understanding through representation learning, model and data optimization, task adaptation, and scalable deployment.

I actively welcome research collaborations in trustworthy graph learning, GNN/LLM/VLM explainability, multimodal and video understanding, model architecture and training optimization, and scalable ML systems. I’m also open to working with motivated, well-prepared interns.