Title
Task-Adaptive Robot Learning From Demonstration With Gaussian Process Models Under Replication
Abstract
Learning from Demonstration (LfD) is a paradigm that allows robots to learn complex manipulation tasks that can not be easily scripted, but can be demonstrated by a human teacher. One of the challenges of LfD is to enable robots to acquire skills that can be adapted to different scenarios. In this letter, we propose to achieve this by exploiting the variations in the demonstrations to retrieve an adaptive and robust policy, using Gaussian Process (GP) models. Adaptability is enhanced by incorporating task parameters into the model, which encode different specifications within the same task. With our formulation, these parameters can be either real, integer, or categorical. Furthermore, we propose a GP design that exploits the structure of replications, i.e., repeated demonstrations with identical conditions within data. Our method significantly reduces the computational cost of model fitting in complex tasks, where replications are essential to obtain a robust model. We illustrate our approach through several experiments on a handwritten letter demonstration dataset.
Year
DOI
Venue
2021
10.1109/LRA.2021.3056367
IEEE Robotics and Automation Letters
Keywords
DocType
Volume
Learning from demonstration,probability and statistical methods,Human-Centered robotics
Journal
6
Issue
ISSN
Citations 
2
2377-3766
1
PageRank 
References 
Authors
0.35
0
5
Name
Order
Citations
PageRank
Miguel Arduengo110.35
Adria Colome2305.89
Júlia Borràs3111.37
Luis Sentis457459.74
Carme Torras51155115.66