Hi, I'm Zhehao Zhang

I'm a PhD Student in Computer Science at The Ohio State University
I am a first year PhD student in Computer Science & Engineering at The Ohio State University and a member of the OSU NLP Lab, advised by Prof. Yu Su and closely collaborating with Prof. Huan Sun. Previously, I worked as a Research Intern at Stanford SALT Lab, Amazon, Adobe Research, and Microsoft Research Lab – Asia. I received my Master's degree from Dartmouth College and Bachelor's degree in Artificial Intelligence Honor Class at Shanghai Jiao Tong University.
My research interests lie in Language Agent Safety and Robustness of Large Language Models (LLMs), Alignment, and general human-centered Natural Language Processsing (NLP). I focus on developing methods to evaluate and improve the safety and reliability of LLMs in real-world applications.
Please feel free to contact me by email (zhang.16420@osu.edu) for collaboration opportunities!

Featured Research Publications

Latest research in natural language processing, large language models, and computational social science.

A resource for improving contextual safety and mitigating over-refusals in LLMs
COLM 2025
Dynamic evaluation of large language models via adaptive reasoning graph
NeurIPS 2024
Visual-perception enhancement via specialized VLM agent collaboration and tool-use
arXiv 2024
Exploring vision-language models' capability in reproducing academic charts
EMNLP 2024
A comprehensive survey of personalized large language models
TMLR 2025
E5
Zero-shot hierarchical table analysis using augmented LLMs
NAACL 2024
A dataset of complex reasoning question answering over tabular data
EMNLP 2023
Mitigating biases in hate speech detection from a causal perspective
EMNLP 2023
Can large language models transform computational social science?
CL 2023