César Guerra-Solano
guerrasolano[at]wisc[dot]edu | github | google scholar | bluesky | twitter
My name is César Guerra-Solano – I am a first-year PhD student in Computer Sciences at the University of Wisconsin-Madison
, supported by the NSF Graduate Research Fellowship. My research centers on natural language processing, computational social science, and computational sociolinguistics. I’m interested in understanding and improving user interaction & personalization, both for and using language technologies, with a focus on user diversity, safety, and augmentation.
In the past, I was an undergraduate at the University of Pittsburgh
. I graduated with a Bachelor of Philosophy (BPhil) in Computer Science & Computational Biology with a minor in Linguistics and was a Stamps Scholar. I defended a thesis, Understanding LLM Adaptation to Diverse User Contexts, advised by Dr. Xiang Lorraine Li. I was also a Chancellor’s Undergraduate Teaching Fellow, which supported my work in making computational biology at Pitt more accessible. Throughout my time at Pitt, I was blessed to have incredible research and teaching mentors who motivated my interests in socially responsible language technologies and education – Dr. Xiang Lorraine Li, Dr. Michael Miller Yoder, and Dr. Alex Maldonado.
I’m always happy to chat – feel free to send me an email!
Publications
Think Globally, Group Locally: Evaluating LLMs Using Multi-Lingual Word Grouping Games
César Guerra-Solano, Zhuochun Li, Xiang Lorraine Li
EMNLP Main 2025 | link
Persona Non Grata: LLM Persona-Driven Generations in MCQA are Unstable in Distinct Dimensions
César Guerra-Solano, Xiang Lorraine Li
Preprint. Under review. | link