We develop methods, benchmarks, and training systems that turn expert data into frontier AI

building benchmarks and collaborating with

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key research areas

Vision and impact

We help labs advance frontier models by working with domain experts to design and build complex, realistic datasets that drive model performance.

initiatives

Community and open science

Open benchmarks, conversations, and research for real-world AI performance.

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Open Benchmarks Grants

Backed by a $3M commitment, the program funds
open-source datasets, benchmarks, and evaluation artifacts that shape how frontier AI systems are built
and evaluated.

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Benchtalks

Our podcast series at the intersection of AI evaluation, data quality, and real-world impact.
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Reading Group

A recurring forum for researchers and practitioners to explore the latest frontier developments in AI while building meaningful connections within the community.

DEEP RESEARCH Expertise

Technical advisors and distinguished affiliates

Stephen Bach headshot

Stephen Bach

Brown University
Eliot Horowitz Assistant Professor, Computer Science Department
Jason Fries headshot

Jason Fries

Stanford University
Assistant Professor of Biomedical Data Science and of Medicine
Jared Dunnmon headshot

Jared Dunnmon

Co-Founder & Chief Scientist, Stealth Startup
Prev. Dir. of AI at DIU
Fred Sala headshot

Fred Sala

Chief Scientist
,
Snorkel AI
Assistant Professor @ University of Wisconsin-Madison
Chris Ré headshot

Chris Ré

Co-Founder
,
Snorkel AI
Professor @ Stanford University
Ludwig Schmidt headshot

Ludwig Schmidt

Stanford University · LAION
Stanford researcher and LAION collaborator
Karthik Narasimhan headshot

Karthik Narasimhan

Princeton University
Professor of Computer Science
Yu Su headshot

Yu Su

Ohio State University
Associate Professor of Computer Science and Engineering
Lewis Tunstall headshot

Lewis Tunstall

Hugging Face
Machine Learning Engineer
PUBLICATIONS

Browse research blogs
and academic papers

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Blog
3 Impractical Assumptions About AI to Avoid

Impractical ML assumptions are made every day in research, which limit its adoption. In the real world, these assumptions do not hold up. Learn more about how to avoid making these assumptions about AI application development.

May 04, 2021
Learn more about 3 Impractical Assumptions About AI to Avoid
Reference-based Weak Supervision for Answer Sentence Selection using Web Data
This work showcases the Reference-based Weak Supervision (RWS), a fully automatic large-scale data pipeline that harvests high-quality weakly- supervised answer sentences from Web data, only requiring a question-reference pair as input.
Research Paper
Reference-based Weak Supervision for Answer Sentence Selection using Web Data

This work showcases the Reference-based Weak Supervision (RWS), a fully automatic large-scale data pipeline that harvests high-quality weakly- supervised answer sentences from Web data, only requiring a question-reference pair as input.

Apr 28, 2021

V. Krishnamurthy, et al

Learn more about Reference-based Weak Supervision for Answer Sentence Selection using Web Data
WRENCH: A Comprehensive Benchmark for Weak Supervision
This paper introduces a benchmark platform, WRENCH, for thorough and standardized evaluation of WS approaches.
Research Paper
WRENCH: A Comprehensive Benchmark for Weak Supervision

This paper introduces a benchmark platform, WRENCH, for thorough and standardized evaluation of WS approaches.

Apr 26, 2021

J. Zhang, et al

Learn more about WRENCH: A Comprehensive Benchmark for Weak Supervision
Comparing the Value of Labeled and Unlabeled Data in Method-of-Moments Latent Variable Estimation
Labeling data for modern machine learning is expensive and time-consuming. Latent variable models can be used to infer labels from weaker, easier-to-acquire sources operating on unlabeled data. Such models can also be trained using labeled data, presenting a key question: should a user invest in few labeled or many unlabeled points? We answer this via a framework centered on model misspecification in method-of-moments latent variable estimation. Our core result is a bias-variance decomposition of the generalization error, which shows that the unlabeled-only approach incurs additional bias under misspecification. We then introduce a correction that provably removes this bias in certain...
Research Paper
Comparing the Value of Labeled and Unlabeled Data in Method-of-Moments Latent Variable Estimation

Labeling data for modern machine learning is expensive and time-consuming. Latent variable models can be used to infer labels from weaker, easier-to-acquire sources operating on unlabeled data. Such models can also be trained using labeled data, presenting a key question: should a user invest in few labeled or many unlabeled points? We answer this via a framework centered on model…

Mar 18, 2021

M. Chen, et al.

Learn more about Comparing the Value of Labeled and Unlabeled Data in Method-of-Moments Latent Variable Estimation
Assessment of Extractability and Accuracy of Electronic Health Record Data for Joint Implant Registries
Are the data in a large US electronic health record (EHR) complete and accurate enough to track trends in implant use and to assess the durability of implants (hereafter referred to as implant survivorship)? In this cohort study, EHR records of patients who had total hip arthroplasty in all Veterans Health Administration hospitals since 2000 were automatically reviewed using novel software; 80% to 95% of hip replacement components used since 2014 were accurately identified, trends in implant use matched known national trends, and known poor implants were found to be negative outliers. This suggests that automated analysis of the EHR...
Research Paper
Assessment of Extractability and Accuracy of Electronic Health Record Data for Joint Implant Registries

Are the data in a large US electronic health record (EHR) complete and accurate enough to track trends in implant use and to assess the durability of implants (hereafter referred to as implant survivorship)? In this cohort study, EHR records of patients who had total hip arthroplasty in all Veterans Health Administration hospitals since 2000 were automatically reviewed using novel…

Mar 15, 2021

NJ. Giori, et al.

Learn more about Assessment of Extractability and Accuracy of Electronic Health Record Data for Joint Implant Registries
Blog
Measuring NLP Progress With Sebastian Ruder

In this episode of Science Talks, Sebastian Ruder, Research Scientist at DeepMind, shares his thoughts on making AI practical with Snorkel AI’s Braden Hancock. This conversation covers progress made in the NLP domain with emerging research, new benchmarks like SuperGLUE, rich repositories and news sources that keep you in the loop and on top of what’s new in NLP, and more.

Mar 10, 2021
Learn more about Measuring NLP Progress With Sebastian Ruder
Blog
Productionizing ML Research With Thomas Wolf

In this episode of ScienceTalks, Snorkel AI’s Braden Hancock Hugging Face’s Chief Science Officer, Thomas Wolf. Thomas shares his story about how he got into machine learning and discusses important design decisions behind the widely adopted Transformers library, as well as the challenges of bringing research projects into production. ScienceTalks is an interview series from Snorkel AI, highlighting some of the best work and ideas to make AI practical.

Feb 05, 2021
Learn more about Productionizing ML Research With Thomas Wolf
Cut out the annotator, keep the cutout: better segmentation with weak supervision
Constructing large, labeled training datasets for segmentation models is an expensive and labor-intensive process. This is a common challenge in machine learning, addressed by methods that require few or no labeled data points such as few-shot learning (FSL) and weakly-supervised learning (WS). Such techniques, however, have limitations when applied to image segmentation—FSL methods often produce noisy results and are strongly dependent on which few datapoints are labeled, while WS models struggle to fully exploit rich image information. We propose a framework that fuses FSL and WS for segmentation tasks, enabling users to train high-performing segmentation networks with very few hand-labeled...
Research Paper
Cut out the annotator, keep the cutout: better segmentation with weak supervision

Constructing large, labeled training datasets for segmentation models is an expensive and labor-intensive process. This is a common challenge in machine learning, addressed by methods that require few or no labeled data points such as few-shot learning (FSL) and weakly-supervised learning (WS). Such techniques, however, have limitations when applied to image segmentation—FSL methods often produce noisy results and are strongly…

Jan 12, 2021

S. Hooper, et al.

Learn more about Cut out the annotator, keep the cutout: better segmentation with weak supervision
Background Splitting: Finding Rare Classes in a Sea of Background
We focus on the problem of training deep image classification models for a small number of extremely rare categories. In this common, real-world scenario, almost all images belong to the background category in the dataset. We find that state-of-the-art approaches for training on imbalanced datasets do not produce accurate deep models in this regime. Our solution is to split the large, visually diverse background into many smaller, visually similar categories during training. We implement this idea by extending an image classification model with an additional auxiliary loss that learns to mimic the predictions of a pre-existing classification model on the...
Research Paper
Background Splitting: Finding Rare Classes in a Sea of Background

We focus on the problem of training deep image classification models for a small number of extremely rare categories. In this common, real-world scenario, almost all images belong to the background category in the dataset. We find that state-of-the-art approaches for training on imbalanced datasets do not produce accurate deep models in this regime. Our solution is to split the…

Jan 01, 2021

RT. Mullapudi, et al.

Learn more about Background Splitting: Finding Rare Classes in a Sea of Background
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