Jack Hessel

Joined

November 2017

Names

Jack Hessel

Emails

****@cs.cornell.edu (Confirmed)

****@gmail.com (Confirmed)

****@allenai.org (Confirmed)

****@samaya.ai

Personal Links

Career & Education History

Researcher

Samaya AI (samaya.ai)

2023 – 2025

Researcher

Allen Institute for Artificial Intelligence (allenai.org)

2021 – 2023

Postdoc

Allen Institute for Artificial Intelligence (allenai.org)

2020 – 2021

PhD student

Cornell University (cornell.edu)

2014 – 2020

Advisors, Relations & Conflicts

Postdoc Advisor

Yejin Choi

2020 – 2023

PhD Advisor

Lillian Lee

2015 – 2020

Expertise

Natural Language Processing

Present

Learning with Multimodal Datasets

Present

Machine Learning

Present

Publications

OpaqueToolsBench: Learning Nuances of Tool Behavior Through Interaction
Skyler Hallinan, Thejas Venkatesh, Xiang Ren, Sai Praneeth Karimireddy, Ashwin Paranjape, Yuhao Zhang, Jack Hessel
- Submitted to ICLR 2026
- Readers: Everyone
Lost in the Maze: Overcoming Context Limitations in Long-Horizon Information-Seeking
Howard Yen, Ashwin Paranjape, Mengzhou Xia, Thejas Venkatesh, Jack Hessel, Danqi Chen, Yuhao Zhang
- Submitted to ICLR 2026
- Readers: Everyone
Promptriever: Instruction-Trained Retrievers Can Be Prompted Like Language Models
Orion Weller, Benjamin Van Durme, Dawn Lawrie, Ashwin Paranjape, Yuhao Zhang, Jack Hessel
- ICLR 2025 Poster
- Readers: Everyone
CertainlyUncertain: A Benchmark and Metric for Multimodal Epistemic and Aleatoric Awareness
Khyathi Chandu, Linjie Li, Anas Awadalla, Ximing Lu, Jae Sung Park, Jack Hessel, Lijuan Wang, Yejin Choi
- ICLR 2025 Poster
- Readers: Everyone
Personalized Soups: Personalized Large Language Model Alignment via Post-hoc Parameter Merging
Joel Jang, Seungone Kim, Bill Yuchen Lin, Yizhong Wang, Jack Hessel, Luke Zettlemoyer, Hannaneh Hajishirzi, Yejin Choi, Prithviraj Ammanabrolu
- AFM 2024 Oral
- Readers: Everyone
The Art of Saying No: Contextual Noncompliance in Language Models
Faeze Brahman, Sachin Kumar, Vidhisha Balachandran, Pradeep Dasigi, Valentina Pyatkin, Abhilasha Ravichander, Sarah Wiegreffe, Nouha Dziri, Khyathi Chandu, Jack Hessel, Yulia Tsvetkov, Noah A. Smith, Yejin Choi, Hannaneh Hajishirzi
- NeurIPS 2024 Track Datasets and Benchmarks Poster
- Readers: Everyone
OLMo: Accelerating the Science of Language Models
Dirk Groeneveld, Iz Beltagy, Evan Pete Walsh, Akshita Bhagia, Rodney Kinney, Oyvind Tafjord, Ananya Harsh Jha, Hamish Ivison, Ian Magnusson, Yizhong Wang, Shane Arora, Russell Authur, Khyathi Chandu, Arman Cohan, Jennifer Dumas, Yanai Elazar, Yuling Gu, Jack Hessel, Tushar Khot, William Merrill et al. (22 additional authors not shown)
- 20 Feb 2024
- OpenReview Archive Direct Upload
- Readers: Everyone
Tailoring Self-Rationalizers with Multi-Reward Distillation
Sahana Ramnath, Brihi Joshi, Skyler Hallinan, Ximing Lu, Liunian Harold Li, Aaron Chan, Jack Hessel, Yejin Choi, Xiang Ren
- SeT LLM @ ICLR 2024
- Readers: Everyone
L3GO: Language Agents with Chain-of-3D-Thoughts for Generating Unconventional Objects
Yutaro Yamada, Khyathi Chandu, Bill Yuchen Lin, Jack Hessel, Ilker Yildirim, Yejin Choi
- LLMAgents @ ICLR 2024 Poster
- Readers: Everyone
WildChat: 1M ChatGPT Interaction Logs in the Wild
Wenting Zhao, Xiang Ren, Jack Hessel, Claire Cardie, Yejin Choi, Yuntian Deng
- ICLR 2024 spotlight
- Readers: Everyone

View all 39 publications

Co-Authors

View all 135 co-authors