Jacob Steinhardt (jsteinhardt@cs) I am a sixth-year graduate student in artificial intelligence at Stanford University working with Percy Liang. My main research interest is in designing machine learning algorithms that are reliable and easy for humans to reason about. Thus far this has led to three major directions: Provably secure machine learning: How can we design machine learning systems that are not just empirically secure against known attacks, but provably secure against all attacks under a meaningful and well-defined threat model? Machine learning with contracts: How can we design formal contracts for machine learning models, which robustly hold across many possible input distributions, so that users can reason abstractly about the behavior of a model without worrying about low-level details such as what dataset it was trained on? Uncertainty-aware approximate inference: Given insufficient resources for exploration, many approximate inference algorithms fail by outputting high confidence in a local optimum that is likely to be wrong. Can we instead build algorithms that know when they have insufficient resources and output predictions with appropriately low confidence? I am also interested in the long-term impacts of AI; I have written some preliminary thoughts about this here. Outside of research, I am a coach for the USA Computing Olympiad and an instructor at the Summer Program in Applied Rationality and Cognition. I also consult part-time for the Open Philanthropy Project (formerly GiveWell Labs). I like indoor bouldering and ultimate frisbee.

Blogs

Essays

In Preparation

Pang Wei Koh, Jacob Steinhardt, and Percy Liang
Stronger Data Poisoning Attacks Bypass Data Sanitization Defenses

Publications

Zachary C. Lipton* and Jacob Steinhardt*
Troubling Trends in Machine Learning Scholarship
[Paper] [Blog post (for comments)]

Ilias Diakonikolas, Gautam Kamath, Daniel Kane, Jerry Li, Jacob Steinhardt*, and Alistair Stewart
Sever: A Robust Meta-Algorithm for Stochastic Optimization
[Paper]

Miles Brundage, Shahar Avin, Jack Clark, et al.
The Malicious Use of Artificial Intelligence: Forecasting, Prevention, and Mitigation
[Report]

Aditi Raghunathan, Jacob Steinhardt, and Percy Liang
Certified Defenses against Adversarial Examples
[Paper] [Open Reviews]
ICLR 2018

Pravesh Kothari* and Jacob Steinhardt*
Better Agnostic Clustering via Relaxed Tensor Norms
[Paper]
STOC 2018 (merged with Outlier-robust moment-estimation via sum-of-squares)

Jacob Steinhardt*, Pang Wei Koh*, and Percy Liang
Certified Defenses for Data Poisoning Attacks
NIPS 2017
[Paper] [Poster] [Code (git)] [Experiments (codalab)]

Jacob Steinhardt
Does Robustness Imply Tractability? A Lower Bound for Planted Clique in the Semi-Random Model
[Paper]

Jacob Steinhardt, Moses Charikar, and Gregory Valiant
Resilience: A Criterion for Learning in the Presence of Arbitrary Outliers
ITCS 2018
[Paper] [Slides]

Moses Charikar*, Jacob Steinhardt*, and Gregory Valiant*
Learning from Untrusted Data
STOC 2017
[Paper] [Slides] [Poster]

Dario Amodei, Chris Olah, Jacob Steinhardt, Paul Christiano, John Schulman, and Dan Mané
Concrete Problems in AI Safety
arXiv
[Paper]

Jacob Steinhardt, Gregory Valiant, and Moses Charikar
Avoiding Imposters and Delinquents: Adversarial Crowdsourcing and Peer Prediction
NIPS 2016
[Paper]

Jacob Steinhardt and Percy Liang
Unsupervised Risk Estimation Using Only Conditional Independence Structure
NIPS 2016
[Paper] [Older preprint]

Jacob Steinhardt*, Gregory Valiant*, and Stefan Wager*
Memory, Communication, and Statistical Queries
COLT 2016
[Paper] [ECCC preprint]

Jacob Steinhardt and Percy Liang
Learning with Relaxed Supervision
NIPS 2015
[Paper] [Code] [Poster]

Jacob Steinhardt and Percy Liang
Reified Context Models
ICML 2015
[Paper] [Code] [Slides] [Poster]

Jacob Steinhardt and Percy Liang
Learning Fast-Mixing Models for Structured Prediction
ICML 2015
[Paper] [Code] [Slides] [Talk] [Poster]

Jacob Steinhardt and John Duchi
Minimax Rates for Memory-Constrained Sparse Linear Regression
COLT 2015
[Paper] [Slides] [Talk] [Poster]

Tianlin Shi, Jacob Steinhardt, and Percy Liang
Learning Where to Sample in Structured Prediction
AISTATS 2015
[Paper] [Code: GitHub/CodaLab] [Slides]

Jacob Steinhardt*, Stefan Wager*, and Percy Liang
The Statistics of Streaming Sparse Regression
arXiv preprint
[Paper]

Jacob Steinhardt and Percy Liang
Adaptivity and Optimism: An Improved Exponentiated Gradient Algorithm
ICML 2014
[Paper] [Slides] [Poster]

Jacob Steinhardt and Percy Liang
Filtering with Abstract Particles
ICML 2014
[Paper] [Slides] [Poster]

Jacob Steinhardt and Zoubin Ghahramani
Flexible Martingale Priors for Deep Hierarchies
AISTATS 2012
[Paper] [Slides] [Poster]

Jacob Steinhardt and Zoubin Ghahramani
Pathological Properties of Deep Bayesian Hierarchies
2011 NIPS Workshop on Bayesian Nonparametrics
[Poster Abstract] [Poster]

Jacob Steinhardt and Russ Tedrake
Finite-Time Regional Verification of Stochastic Nonlinear Systems
Robotics: Science and Systems, 2011
Best Student Paper Finalist
[Conference Paper and Errata] [Journal Paper] [Slides] [Poster]

Jacob Steinhardt
Permutations with Ascending and Descending Blocks
Electronic Journal of Combinatorics, 17:R14
[Paper] [Slides]

Jacob Steinhardt
On Coloring the Odd-Distance Graph
Electronic Journal of Combinatorics, 16:N12
[Paper]

Jacob Steinhardt
Cayley Graphs Formed by Conjugate Generating Sets of S_n
3rd Place in 2007 Siemens Competition
[Paper]

Longer Talks

Past/Present Collaborators