Rachel Guo
Stanford University
Institute for Computational and Mathematical Engineering
Stanford University
Institute for Computational and Mathematical Engineering
I'm a PhD student at the Institute for Computational and Mathematical Engineering at Stanford, advised by Ramesh Johari. I work on glucose modeling for type 1 diabetes, collaborating with Ramesh Johari, Matthew Levine, Emily Fox, Dessi Zaharieva, Rayhan Lal, and Dana Lewis. Recently I've been thinking about causal inference, prediction, machine learning, sequence modeling, hybrid modeling, mechanistic modeling, optimization, uncertainty quantification, and evaluating models for time series data with applications in type 1 diabetes.
Before grad school, I was a Fellow in Computer Science at the Harvard Center for Research on Computation and Society where I worked on causal inference and AI for conservation with Lily Xu, Andrew Perrault, Luke Miratrix, and Milind Tambe. I leveraged quasi-experimental data with natural shocks for causal estimation, coupled with machine learning to infer outcomes and confounders when data is imperfect, noisy, or biased. I also empirically studied bandit algorithms for planning anti-poaching ranger patrols. I enjoy working with real-world data to develop causal inference and machine learning methods for socially impactful problems.
I graduated from Harvard College with a degree in Statistics and Computer Science. Previously, I interned at Meta AI.
Information Economics and LLMs Workshop at EC 2025
Lyle Goodyear, Rachel Guo, Ramesh Johari
Figure 2 from Roughgarden, Tim. Selfish routing and the price of anarchy. MIT press, 2005. [Link to image source]
We empirically study the effect of game state representation on the behavior of LLM agents in repeated, multi-agent selfish routing games, which have known theoretical equilibria.
ICME Research Symposium (2025)
Rachel Guo, Matthew Levine, Dana Lewis, Dessi Zaharieva, Rayhan Lal, Emily Fox, Ramesh Johari
[Poster]
International Conference on Advanced Technologies & Treatments for Diabetes (ATTD 2025)
Jamie Kurtzig, Anika Agrawal, Mehmet Tascioglu, Lyle Goodyear, Rachel Guo, Ramesh Johari, David Scheinker
[Abstract]
ACM Conference on Equity and Access in Algorithms, Mechanisms, and Optimization (2022)
IJCAI Workshop on Complex Data Challenges in Earth Observation (2022)
Rachel Guo, Lily Xu, Andrew Perrault
NeurIPS Workshop on Machine Learning for Development (2020)
Rachel Guo, Lily Xu, Andrew Plumptre, Drew Cronin, Francis Okeke, Milind Tambe
[Paper]
Best Lightning Paper
In submission
Rachel Guo*, Lily Xu*, Andrew Perrault, Luke W. Miratrix, Andrew J. Plumptre, Joshua Mabonga, Herbert Kitimbo, Fredrick Wanyama, Milind Tambe, Andrew B. Davies
"Snare Mountain" – Photo by Paul Hilton. [Link to image source]
This photo depicts over 12 tons of confiscated snares and traps found and removed by rangers at the Uganda Wildlife Authority. Our paper quantifies the causal impact of ranger patrols on deterring poaching activity to support policy recommendations.
We find that traditional time series models like ARIMA perform reasonably well for predicting glucose under exercise, beating hybrid models that harness neural networks to learn ordinary differential equations guiding mechanistic physiology.
NSF Graduate Research Fellowship (2023)
Stanford EDGE Fellowship (2023)
Thomas T. Hoopes Prize for Outstanding Senior Thesis (2022)
Highest Honors in Statistics and Computer Science at Harvard (2022)
CRA Outstanding Undergraduate Researcher Award Honorable Mention (2022)
NCWIT National Collegiate Award (2021)
Best Lightning Paper at NeurIPS Machine Learning for Development Workshop (2020)
AAAI Undergraduate Consortium Scholar (2020)
Harvard College Scholar (2019)