Dilip Arumugam

Welcome

I am a postdoctoral researcher in the Princeton University Computer Science Department, where I work with Tom Griffiths. My research is broadly focused on reinforcement learning and, in recent years, draws heavily upon tools from information theory.

I earned my Ph.D. from the Stanford University Computer Science Department, along with a M.S. from the Statistics Department, where I was advised by Benjamin Van Roy. I was affiliated with both the Stanford Artificial Intelligence Lab and the Stanford Computation & Cognition Lab. Prior to that, I completed B.S. and M.S. degrees in the Brown University Computer Science Department, advised by Michael Littman while also working closely with Stefanie Tellex. I have completed internships with Microsoft Research Cambridge, Microsoft Research Redmond, Mila, and Google DeepMind.

Research Interests

My research is primarily centered around understanding principled, practical approaches for achieving data efficiency in reinforcement learning. This often takes the form of research directed towards the specific generalization, exploration, and credit assignment challenges faced by reinforcement-learning agents. In recent years, I've grown fond of information theory as a suite of tools which facilitate rigorous analysis while also remaining amenable to the design of scalable agents. I’m also interested in how insights for engineering sample efficiency into computational decision-making agents fruitfully informs our understanding and reverse engineering of sample efficiency in biological decision-making agents.

Selected Papers & Publications

For my CV, please click here and, for a complete list of papers, please check Google Scholar, DBLP, or Semantic Scholar (depending on what you're after, one of these may be more reliable than the others).

On Temporal Credit Assignment and Data-Efficient Reinforcement Learning

Dilip Arumugam & Thomas L. Griffiths.
RLC Finding the Frame Workshop, 2025.

Toward Efficient Exploration by Large Language Model Agents

Dilip Arumugam & Thomas L. Griffiths.
ICML Exploration in AI Today Workshop, 2025.
Early version: Multi-disciplinary Conference on Reinforcement Learning & Decision Making (RLDM), 2025.

Trade-Offs Between Tasks Induced by Capacity Constraints Bound the Scope of Intelligence

Cameron Turner, Dilip Arumugam, Logan Nelson, Thomas L. Griffiths.
Proceedings of the 47th Annual Meeting of the Cognitive Science Society (CogSci), 2025.
Invited Oral Talk

Satisficing Exploration for Deep Reinforcement Learning

Dilip Arumugam, Saurabh Kumar, Ramki Gummadi, Benjamin Van Roy.
RLC Finding the Frame Workshop, 2024.
Invited Oral Talk

Bayesian Reinforcement Learning with Limited Cognitive Load

Dilip Arumugam*, Mark K. Ho*, Noah D. Goodman, Benjamin Van Roy.
Open Mind: Discoveries in Cognitive Science, 2024.

Cultural Reinforcement Learning: A Framework for Modeling Cumulative Culture on a Limited Channel

Ben Prystawski, Dilip Arumugam, Noah D. Goodman.
Proceedings of the 45th Annual Meeting of the Cognitive Science Society (CogSci), 2023.

Deciding What to Model: Value-Equivalent Sampling for Reinforcement Learning

Dilip Arumugam & Benjamin Van Roy.
Advances in Neural Information Processing Systems (NeurIPS), 2022.
ICML Workshop on Decision Awareness in Reinforcement Learning, 2022.
Early version: Multi-disciplinary Conference on Reinforcement Learning & Decision Making (RLDM), 2022.

Planning to the Information Horizon of Bayes-Adaptive Markov Decision Processes via Epistemic State Abstraction

Dilip Arumugam & Satinder Singh.
Advances in Neural Information Processing Systems (NeurIPS), 2022.
Early version: NeurIPS Workshop on Ecological Theory of Reinforcement Learning, 2021.

The Value of Information When Deciding What to Learn

Dilip Arumugam & Benjamin Van Roy.
Advances in Neural Information Processing Systems (NeurIPS), 2021.

Deciding What to Learn: A Rate-Distortion Approach

Dilip Arumugam & Benjamin Van Roy.
International Conference on Machine Learning (ICML), 2021.

An Information-Theoretic Perspective on Credit Assignment in Reinforcement Learning

Dilip Arumugam, Peter Henderson, Pierre-Luc Bacon.
NeurIPS Workshop on Biological and Artificial Reinforcement Learning, 2020.

Value Preserving State-Action Abstractions

David Abel, Nate Umbanhowar, Khimya Khetarpal, Dilip Arumugam, Doina Precup, Michael L. Littman.
International Conference on Artificial Intelligence and Statistics (AISTATS), 2020.
Multi-disciplinary Conference on Reinforcement Learning & Decision Making (RLDM), 2019.
Early version: ICLR Workshop on Structures and Priors in Reinforcement Learning, 2019.