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Joey Hejna
Joey Hejna
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Open x-embodiment: Robotic learning datasets and rt-x models
A O'Neill, A Rehman, A Gupta, A Maddukuri, A Gupta, A Padalkar, A Lee, ...
arXiv preprint arXiv:2310.08864, 2023
536*2023
Octo: An open-source generalist robot policy
OM Team, D Ghosh, H Walke, K Pertsch, K Black, O Mees, S Dasari, ...
arXiv preprint arXiv:2405.12213, 2024
310*2024
DROID: A Large-Scale In-The-Wild Robot Manipulation Dataset
A Khazatsky, K Pertsch, S Nair, A Balakrishna, S Dasari, S Karamcheti, ...
arXiv preprint arXiv:2403.12945, 2024
1462024
From to : Your Language Model is Secretly a Q-Function
R Rafailov, J Hejna, R Park, C Finn
arXiv preprint arXiv:2404.12358, 2024
108*2024
Few-Shot Preference Learning for Human-in-the-Loop RL
J Hejna, D Sadigh
6th Annual Conference on Robot Learning, 2022
1022022
Extreme Q-Learning: MaxEnt RL without Entropy
D Garg, J Hejna, M Geist, S Ermon
International Conference on Learning Representations, 2023
802023
Contrastive Preference Learning: Learning from Human Feedback without Reinforcement Learning
J Hejna, R Rafailov, H Sikchi, C Finn, S Niekum, WB Knox, D Sadigh
The Twelfth International Conference on Learning Representations, 2023
79*2023
Inverse preference learning: Preference-based rl without a reward function
J Hejna, D Sadigh
Advances in Neural Information Processing Systems 36, 18806-18827, 2023
512023
Hierarchically decoupled imitation for morphological transfer
D Hejna, L Pinto, P Abbeel
International Conference on Machine Learning, 4159-4171, 2020
482020
Scaling Laws for Reward Model Overoptimization in Direct Alignment Algorithms
R Rafailov, Y Chittepu, R Park, H Sikchi, J Hejna, B Knox, C Finn, ...
arXiv preprint arXiv:2406.02900, 2024
442024
Task-agnostic morphology evolution
DJ Hejna III, P Abbeel, L Pinto
International Conference on Learning Representations 2021, 2021
282021
Distance Weighted Supervised Learning for Offline Interaction Data
J Hejna, J Gao, D Sadigh
International Conference on Machine Learning, 2023
172023
Show, Don't Tell: Aligning Language Models with Demonstrated Feedback
O Shaikh, M Lam, J Hejna, Y Shao, M Bernstein, D Yang
arXiv preprint arXiv:2406.00888, 2024
142024
Re-mix: Optimizing data mixtures for large scale imitation learning
J Hejna, C Bhateja, Y Jiang, K Pertsch, D Sadigh
arXiv preprint arXiv:2408.14037, 2024
92024
Improving Long-Horizon Imitation through Instruction Prediction
J Hejna, P Abbeel, L Pinto
Proceedings of the AAAI Conference on Artificial Intelligence 37 (7), 7857-7865, 2023
72023
Vision Language Models are In-Context Value Learners
YJ Ma, J Hejna, C Fu, D Shah, J Liang, Z Xu, S Kirmani, P Xu, D Driess, ...
The Thirteenth International Conference on Learning Representations, 2024
32024
Improving Latent Representations via Explicit Disentanglement
J Hejna, A Vangipuram, K Liu
32020
Robot Data Curation with Mutual Information Estimators
J Hejna, S Mirchandani, A Balakrishna, A Xie, A Wahid, J Tompson, ...
arXiv preprint arXiv:2502.08623, 2025
12025
So You Think You Can Scale Up Autonomous Robot Data Collection?
S Mirchandani, S Belkhale, J Hejna, E Choi, MS Islam, D Sadigh
8th Annual Conference on Robot Learning, 0
1*
Efficiently Generating Expressive Quadruped Behaviors via Language-Guided Preference Learning
J Clark, J Hejna, D Sadigh
arXiv preprint arXiv:2502.03717, 2025
2025
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