Wilson Wu
Wilson Wu is an AI researcher whose work studies language-model planning, neural-network internals and data attribution. He studied future-token planning in 2024 and coauthored a compact-proof analysis of group-operation networks that appeared at ICLR 2025. In 2025, he coauthored a Bayesian influence method for data attribution and an ARC post about mechanistic estimation. His May 2026 work examined expected outputs of wide random MLPs and random-product expectations; he is a researcher at ARC as of October 2026.
Timeline
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2024
Myopic training and future tokens
In April 2024, he coauthors “Do language models plan ahead for future tokens?” with John X. Morris and Lionel Levine. His affiliation is the Department of Mathematics at the University of Colorado Boulder; Morris and Levine are affiliated with Cornell University's computer science and mathematics departments. The paper tests pre-caching and breadcrumbs by training language models with myopic gradients that stop propagation to past timesteps.
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2024–2025
Compact proofs for group networks
In October 2024, he coauthors “Towards a unified and verified understanding of group-operation networks” with Louis Jaburi, Jacob Drori and Jason Gross. The paper analyzes one-hidden-layer networks trained on finite group operations and turns its explanation into compact proofs of model performance; for the symmetric group S5, it gives an accuracy bound of at least 95% for 45% of the trained models. It appears at ICLR in 2025.
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September 2025
Bayesian influence functions
In September 2025, he coauthors the University of Colorado Boulder paper “Bayesian Influence Functions for Hessian-Free Data Attribution” with Philipp Alexander Kreer, Maxwell Adam, Zach Furman and Jesse Hoogland. It proposes the local Bayesian influence function, which replaces Hessian inversion with loss landscape statistics estimated by stochastic-gradient MCMC sampling.
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November 2025
Competing with sampling
In November 2025, he coauthors ARC's “Competing with sampling,” a post that introduces the matching sampling principle. The post reports progress on mechanistic estimates for random MLPs and trained two-layer MLPs.
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May 2026
Estimating outputs of wide MLPs
In May 2026, he coauthors ARC’s paper “Estimating the expected output of wide random MLPs more efficiently than sampling” with Victor Lecomte, Michael Winer, George Robinson, Jacob Hilton and Paul Christiano. It estimates randomly initialized MLP outputs over Gaussian inputs without running samples through the network. For sufficiently wide networks, the estimator reaches a target mean squared error with substantially fewer FLOPs than Monte Carlo sampling.
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May 2026
Mechanistic estimates for random products
In May 2026, he coauthors ARC's “Mechanistic estimation for expectations of random products” with Jacob Hilton, George Robinson, Eric Neyman, Paul Christiano, Michael Winer, Victor Lecomte and Gabriel Wu. The work covers random halfspace intersections, #3-SAT and random permanents; Wu writes up methods based on symmetric random functions and deduction–projection estimators for permanents.
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As of October 2026
Researcher at ARC
In April 2024, he is a full-time researcher at ARC. As of October 2026, he is a researcher at ARC, which works on a systematic and theoretically grounded approach to mechanistic interpretability.
Career
- Since 2024Alignment Research CenterResearcher
- 2024University of Colorado Boulder
Sources and credits
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- Do language models plan ahead for future tokens?
- Do Language Models Plan Ahead for Future Tokens?
- Towards a unified and verified understanding of group-operation networks
- Towards a Unified and Verified Understanding of Group-Operation Networks
- Bayesian Influence Functions for Hessian-Free Data Attribution
- Bayesian Influence Functions for Hessian-Free Data Attribution
- Competing with sampling
- Estimating the expected output of wide random MLPs more efficiently than sampling
- Mechanistic estimation for wide random MLPs
- Mechanistic estimation for expectations of random products
- Team — Alignment Research Center
- Wilson Wu - MATS Mentor Program


