NetLfD: Network-Aware Learning From Demonstration for In-Contact Skills via Teleoperation
Research output: Contribution to journal › Research article › Contributed › peer-review
Abstract
When providing task demonstrations to a remote robot over the network via bilateral teleoperation, communication impairments are unavoidable, hindering the human operator from delivering high-quality demonstrations. Poor-quality demonstrations can negatively impact the robot's ability to learn and generalize. In this letter, we propose to enhance learning performance by introducing a network-aware confidence weighting strategy for remote learning from demonstration. Our approach extends the Hidden Semi-Markov Model (HSMM) and its task-parameterized version (TP-HSMM) to their confidence-weighted versions, WHSMM and WTP-HSMM. We evaluated various weight metrics that serve as teleoperation transparency measures and demonstration quality indicators under varying communication delays. We validated the proposed approach in two different in-contact tasks using data collected from 18 participants. The results show that weighting improves task performance in reproduction by up to 42% in the force precision and 63% in the success rate, demonstrating the potential of the proposed approach to enhance the effectiveness of robot learning from remote demonstrations.
Details
Original language | English |
---|---|
Pages (from-to) | 6995-7002 |
Number of pages | 8 |
Journal | IEEE Robotics and Automation Letters |
Volume | 8 |
Issue number | 11 |
Publication status | Published - 1 Nov 2023 |
Peer-reviewed | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- Learning from demonstration, telerobotics and teleoperation