arXiv Machine Learning

Context-Continuous Preference Learning for Exoskeleton Personalization

arXiv Machine Learning
Jun 5

OLIVE: Online Low-Rank Incremental Learning for Efficient Adaptive Exoskeletons

arXiv:2606. 05234v1 Announce Type: cross Abstract: Wearable exoskeleton systems hold promise for restoring mobility in individuals with physical impairments, yet most existing controllers rely on static gait policies that lack the ability to adapt to dynamic real-world environments or individual user characteristics.

By Dong Liu, Yanxuan Yu, Ben Lengerich, Tony Geng, Ying Nian Wu
arXiv Machine Learning
Aug 18

Learning Varying Physical Therapist-Patient Interactions for Robot-mediated Upper Limb Task-Specific Training

arXiv:2608. 15995v1 Announce Type: cross Abstract: Upper extremity motor function recovery is positively linked to Task-Specific Training (TST) and sufficient therapy dosage.

By Jia Quan Loh (Human Robotics Laboratory, Department of Mechanical Engineering, The University of Melbourne), Vincent Crocher (Human Robotics Laboratory, Department of Mechanical Engineering, The University of Melbourne), Marlena Klaic (Melbourne School of Health Sciences, The University of Melbourne), Denny Oetomo (Human Robotics Laboratory, Department of Mechanical Engineering, The University of Melbourne), Ying Tan (Human Robotics Laboratory, Department of Mechanical Engineering, The University of Melbourne)
arXiv Machine Learning
Sep 18

UniExo: Unified Multi-Skill Policies for Musculoskeletal Locomotion and Co-Adaptive Exoskeleton Control

UniExo is a framework that builds a single, multi-skill musculoskeletal human policy by distilling four imitation experts—walking, turning, running, and backward walking—into one network guided by a skill latent. The human policy is fine‑tuned with reinforcement learning on transition sequences, achieving a 94.7% tracking success rate on unseen clips and greater robustness to perturbations. A hip exoskeleton controller is then co‑adapted with this human policy via multi‑agent reinforcement learning, enabling it to assist across four treadmill speeds and a continuous route of all four skills without explicit mode switching.

By Yifei Yuan, Jakob Wolf, Ghaith Androwis, Xianlian Zhou
arXiv Machine Learning
Sep 10

HB-PVI: A Hierarchical Bayesian Personalization and Value-of-Information Framework for Complex Activity Recognition

HB‑PVI is a hierarchical Bayesian framework that jointly models participant heterogeneity, the benefits and harms of four personalization mechanisms, and the economic value of acquiring additional labels for complex activity recognition. In a 47‑participant MUSIC‑CAR cohort, the framework used a sequential‑Monte‑Carlo updater, a Student‑t hierarchical gain model, and a one‑step expected‑value‑of‑sample‑information stopping rule. The results showed that, under realistic cost and benefit thresholds, the policy avoided labeling entirely, matching an always‑stop strategy while maintaining near‑optimal predictive performance and reducing labeling effort by 100%.

By Hammed A. Olayinka
arXiv Machine Learning
Aug 4

Staged Multi-Agent Training (SMAT) for Hip Exoskeletons: Metabolic and Biomechanical Validation of a Simulation-Trained Co-Adaptive Controller

arXiv:2608. 00715v1 Announce Type: cross Abstract: Learning-based controllers can deliver exoskeleton assistance after training entirely in physics-based simulation, yet few controllers that address human-device co-adaptation have been validated on real users by whole-body metabolic measurement, the standard benchmark for assistive walking.

By Yifei Yuan, Jakob Wolf, Ghaith Androwis, Xianlian Zhou
Hugging Face Trending Papers
Jul 30

A Montage-Agnostic Encoder for Calibration-Light Cross-User Gesture Recognition from Surface Electromyography

Pattern-recognition control promises a myoelectric prosthesis that responds to many intended gestures rather than one or two, but the promise has stayed in the laboratory. A recogniser trained on one person rarely transfers to the next, and useful performance usually demands a fresh round of labelled calibration from the end user.