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  4. Learning Cost Function and Trajectory for Robotic Writing Motion
 
conference paper

Learning Cost Function and Trajectory for Robotic Writing Motion

Yin, Hang  
•
Paiva, Ana
•
Billard, Aude  
2014
Proceedings of the IEEE-RAS International Conference on Humanoid Robots (Humanoids)
IEEE-RAS International Conference on Humanoid Robots

We present algorithms for inferring the cost function and reference trajectory from human demonstrations of hand-writing tasks. These two key elements are then used, through optimal control, to generate an impedance-based controller for a robotic hand . The key novelty lies in the flexibility of the feature design in the composition of the cost function, in contrast to the traditional approaches that consider linearly combined features. Cross-entropy-based methods form the core of our learning technique, resulting in sample-based stochastic algorithms for task encoding and decoding. The algorithms are validated using an anthropomorphic robot hand. We assess that the correct compliance is well encapsulated by subjecting the robot to perturbations during task reproduction.

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Type
conference paper
DOI
10.1109/HUMANOIDS.2014.7041425
Author(s)
Yin, Hang  
Paiva, Ana
Billard, Aude  
Date Issued

2014

Published in
Proceedings of the IEEE-RAS International Conference on Humanoid Robots (Humanoids)
Start page

608

End page

615

Subjects

learning from demonstrations

•

stochastic optimization

•

impedance control

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LASA  
Event nameEvent placeEvent date
IEEE-RAS International Conference on Humanoid Robots

Madrid, Spain

November 18-20, 2014

Available on Infoscience
October 24, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/108021
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