no code implementations • 8 Nov 2024 • Sreyas Venkataraman, YuFei Wang, Ziyu Wang, Zackory Erickson, David Held
Our method then learns a policy using offline RL with the reward-labeled dataset.
1 code implementation • 31 Oct 2024 • Jehan Yang, Maxwell Soh, Vivianna Lieu, Douglas J Weber, Zackory Erickson
This paper introduces the first generalization and adaptation benchmark using machine learning for evaluating out-of-distribution performance of electromyography (EMG) classification algorithms.
no code implementations • 27 Oct 2024 • Jessie Yuan, Janavi Gupta, Akhil Padmanabha, Zulekha Karachiwalla, Carmel Majidi, Henny Admoni, Zackory Erickson
Speech interfaces, especially ones that utilize Large Language Models (LLMs), can enable individuals to effectively and naturally communicate high-level commands and nuanced preferences to robots.
no code implementations • 5 Apr 2024 • Akhil Padmanabha, Jessie Yuan, Janavi Gupta, Zulekha Karachiwalla, Carmel Majidi, Henny Admoni, Zackory Erickson
Physically assistive robots present an opportunity to significantly increase the well-being and independence of individuals with motor impairments or other forms of disability who are unable to complete activities of daily living.
1 code implementation • 4 Apr 2024 • Abhishek Tandon, Anujraaj Goyal, Henry M. Clever, Zackory Erickson
In contrast, we introduce BodyMAP, which jointly predicts the human body mesh and 3D applied pressure map across the entire human body.
no code implementations • 8 Feb 2024 • Weikang Wan, Ziyu Wang, YuFei Wang, Zackory Erickson, David Held
The key to our approach is to leverage the recent progress in differentiable trajectory optimization, which enables computing the gradients of the loss with respect to the parameters of trajectory optimization.
no code implementations • 6 Feb 2024 • YuFei Wang, Zhanyi Sun, Jesse Zhang, Zhou Xian, Erdem Biyik, David Held, Zackory Erickson
Reward engineering has long been a challenge in Reinforcement Learning (RL) research, as it often requires extensive human effort and iterative processes of trial-and-error to design effective reward functions.
no code implementations • CVPR 2024 • Abhishek Tandon, Anujraaj Goyal, Henry M. Clever, Zackory Erickson
In contrast we introduce BodyMAP which jointly predicts the human body mesh and 3D applied pressure map across the entire human body.
no code implementations • 2 Nov 2023 • YuFei Wang, Zhou Xian, Feng Chen, Tsun-Hsuan Wang, Yian Wang, Katerina Fragkiadaki, Zackory Erickson, David Held, Chuang Gan
We present RoboGen, a generative robotic agent that automatically learns diverse robotic skills at scale via generative simulation.
no code implementations • 16 Oct 2023 • Jerry Zhi-Yang He, Zackory Erickson, Daniel S. Brown, Anca D. Dragan
We propose that capturing robustness in these interactive settings requires constructing and analyzing the entire natural-adversarial frontier: the Pareto-frontier of human policies that are the best trade-offs between naturalness and low robot performance.
1 code implementation • 8 Feb 2023 • Akhil Padmanabha, Sonal Choudhary, Carmel Majidi, Zackory Erickson
In this work, we present a framework for the estimation of scratch intensity in addition to the detection of scratch.
no code implementations • 5 Dec 2022 • Jerry Zhi-Yang He, aditi raghunathan, Daniel S. Brown, Zackory Erickson, Anca D. Dragan
We advocate that generalization to such OOD policies benefits from (1) learning a good latent representation for human policies that test-time humans can accurately be mapped to, and (2) making that representation adaptable with test-time interaction data, instead of relying on it to perfectly capture the space of human policies based on the simulated population only.
no code implementations • 19 Sep 2022 • Alberta Longhini, Marco Moletta, Alfredo Reichlin, Michael C. Welle, David Held, Zackory Erickson, Danica Kragic
We study the problem of learning graph dynamics of deformable objects that generalizes to unknown physical properties.
no code implementations • 11 Aug 2022 • YuFei Wang, David Held, Zackory Erickson
Robotic manipulation of highly deformable cloth presents a promising opportunity to assist people with several daily tasks, such as washing dishes; folding laundry; or dressing, bathing, and hygiene assistance for individuals with severe motor impairments.
no code implementations • 13 Apr 2022 • Jeremy Tien, Jerry Zhi-Yang He, Zackory Erickson, Anca D. Dragan, Daniel S. Brown
While much prior work focuses on causal confusion in reinforcement learning and behavioral cloning, we focus on a systematic study of causal confusion and reward misidentification when learning from preferences.
1 code implementation • 9 Jul 2020 • Zackory Erickson, Yijun Gu, Charles C. Kemp
Through a formal study with eight participants in AVR Gym, we found that the Original policies performed poorly, the Revised policies performed significantly better, and that improvements to the biomechanical models used to train the Revised policies resulted in simulated people that better match real participants.
1 code implementation • 2 Apr 2020 • Zackory Erickson, Eliot Xing, Bharat Srirangam, Sonia Chernova, Charles C. Kemp
Finally, we present how a robot can combine this high resolution local sensing with images from the robot's head-mounted camera to achieve accurate material classification over a scene of objects on a table.
1 code implementation • CVPR 2020 • Henry M. Clever, Zackory Erickson, Ariel Kapusta, Greg Turk, C. Karen Liu, Charles C. Kemp
We describe a physics-based method that simulates human bodies at rest in a bed with a pressure sensing mat, and present PressurePose, a synthetic dataset with 206K pressure images with 3D human poses and shapes.
3D human pose and shape estimation 3D Human Shape Estimation +1
4 code implementations • 10 Oct 2019 • Zackory Erickson, Vamsee Gangaram, Ariel Kapusta, C. Karen Liu, Charles C. Kemp
Assistive Gym models a person's physical capabilities and preferences for assistance, which are used to provide a reward function.
no code implementations • 14 Sep 2019 • Alexander Clegg, Zackory Erickson, Patrick Grady, Greg Turk, Charles C. Kemp, C. Karen Liu
We investigated the application of haptic feedback control and deep reinforcement learning (DRL) to robot-assisted dressing.
2 code implementations • 10 May 2018 • Zackory Erickson, Nathan Luskey, Sonia Chernova, Charles C. Kemp
To explore this, we collected a dataset of spectral measurements from two commercially available spectrometers during which a robotic platform interacted with 50 flat material objects, and we show that a neural network model can accurately analyze these measurements.
no code implementations • 21 Apr 2018 • Henry M. Clever, Ariel Kapusta, Daehyung Park, Zackory Erickson, Yash Chitalia, Charles C. Kemp
In this work, we present two convolutional neural networks to estimate the 3D joint positions of a person in a configurable bed from a single pressure image.
no code implementations • 27 Sep 2017 • Zackory Erickson, Henry M. Clever, Greg Turk, C. Karen Liu, Charles C. Kemp
The physical implications of dressing are complicated by non-rigid garments, which can result in a robot indirectly applying high forces to a person's body.
1 code implementation • 10 Jul 2017 • Zackory Erickson, Sonia Chernova, Charles C. Kemp
Our approach achieves state-of-the-art results and enables a robot to estimate the material class of household objects with ~90% accuracy when 92% of the training data are unlabeled.