Esmeralda S. Whitammer
Also known as Nikolay Malkin
Esmeralda Whitammer is a machine-learning researcher at the University of Edinburgh whose work on generative flow networks (GFlowNets) and amortized inference trains models to sample from unnormalized target distributions. A mathematician by training, she earned a Ph.D. in mathematics at Yale University in 2021 and then worked with Yoshua Bengio as a postdoctoral researcher at Mila in Montréal until 2024. Her papers include the trajectory balance objective for GFlowNets at NeurIPS 2022 and a theory of continuous GFlowNets at ICML 2023, and her ICLR 2024 paper on amortizing intractable inference in large language models earned an Honorable Mention. She became a Chancellor's Fellow in Edinburgh's School of Informatics in July 2024. Since April 2025, she is also a Programme Fellow at CIFAR in the Learning in Machines and Brains programme.
- Now at
- University of Edinburgh and CIFAR
Timeline
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2015–2021
Mathematics at Washington and Yale
Trained as a pure mathematician, she earns a B.S. at the University of Washington in 2015 and an M.S. and Ph.D. in mathematics at Yale University in 2021. Her Yale dissertation, advised by Alexander Goncharov in the Department of Mathematics, studies the Galois action on motivic fundamental groups of punctured elliptic and rational curves.
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2021–2024
Postdoc with Bengio at Mila
From 2021 to 2024, she is a postdoctoral researcher at Mila – Québec AI Institute in Montréal and at the Université de Montréal's Department of Informatics and Operations Research. She works with Yoshua Bengio and collaborates with Aaron Courville, Gauthier Gidel and Guillaume Lajoie.
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2022
Trajectory balance for GFlowNets
In 2022, she coauthors "Trajectory balance: Improved credit assignment in GFlowNets" with Moksh Jain, Emmanuel Bengio, Chen Sun and Yoshua Bengio, published at NeurIPS 2022. The paper proposes trajectory balance, a learning objective for generative flow networks that is more efficient than the earlier flow matching and detailed balance objectives.
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2023
A theory of continuous GFlowNets
In 2023, she coauthors "A theory of continuous generative flow networks" at the 40th International Conference on Machine Learning, with Salem Lahlou, Tristan Deleu, Yoshua Bengio and others. GFlowNets are amortized variational inference algorithms that sample from unnormalized target distributions, and the paper presents a theory that extends them to continuous or hybrid state spaces.
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2024
ICLR 2024 honorable mention
In 2024, the paper "Amortizing intractable inference in large language models", written with Edward J. Hu, Moksh Jain, Eric Elmoznino, Younesse Kaddar, Guillaume Lajoie and Yoshua Bengio, receives an Honorable Mention at ICLR 2024. It fine-tunes language models with GFlowNets so that they sample from intractable posterior distributions, and it treats chain-of-thought reasoning as a latent variable modeling problem.
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2024
Towards an AI mathematician
In 2024, she and Yoshua Bengio publish the essay "Machine learning and information theory concepts towards an AI Mathematician" in the Bulletin of the American Mathematical Society. It takes an information-theoretic view of what makes a mathematical statement interesting, as a guide for future work on an AI mathematician.
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July 2024
Chancellor's Fellow at Edinburgh
In July 2024, she joins the University of Edinburgh's School of Informatics as a Chancellor's Fellow in AI and Data Science. She is a member of the school's Institute for Machine Learning.
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Since April 2025
CIFAR Programme Fellow
Since April 2025, she is a Programme Fellow at CIFAR in the Learning in Machines and Brains programme, and she remains a Chancellor's Fellow at Edinburgh. In spring 2026, she teaches Advanced Topics in Machine Learning, a course designed with Slava Borovitskiy and Rik Sarkar.
Career
- Since 2025CIFARProgramme Fellow
- Since 2024University of EdinburghChancellor's Fellow in AI and Data Science
- 2021–2024MilaPostdoctoral Researcher
- 2021–2024Université de MontréalPostdoctoral Researcher
Education
- 2021Yale UniversityM.S. in mathematics
- 2015University of WashingtonB.S.
Sources and credits
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- Esmeralda S. Whitammer – personal website
- On the Galois Action on Motivic Fundamental Groups of Punctured Elliptic and Rational Curves – Yale Graduate School of Arts and Sciences Dissertations
- Esmeralda S. Whitammer – CIFAR
- Trajectory balance: Improved credit assignment in GFlowNets – arXiv
- A theory of continuous generative flow networks – Proceedings of Machine Learning Research
- ICLR 2024 Outstanding Paper Awards – ICLR Blog
- Amortizing intractable inference in large language models – arXiv
- Machine learning and information theory concepts towards an AI Mathematician – arXiv
- Esmeralda Whitammer – School of Informatics, University of Edinburgh
