Source
IEEE Transactions on Cognitive and Developmental Systems, (2021)ISSN
Annotation
08 januari 2021
Publication type
Article / Letter to editor

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Organization
SW OZ DCC AI
Journal title
IEEE Transactions on Cognitive and Developmental Systems
Languages used
English (eng)
Subject
Cognitive artificial intelligenceAbstract
One of the biggest challenges in robotics is interacting under uncertainty. Unlike robots, humans learn, adapt and perceive their body as a unity when interacting with the world. Here we investigate the suitability of Active inference, a computational model proposed for the brain and governed by the free-energy principle, for robotic body perception and action in a non-simulated environment. We designed and deployed the algorithm on the humanoid iCub showing how our proposed model enabled the robot to have adaptive body perception and to perform robust upper-body reaching and head object tracking behaviours even under high levels of sensor noise and discrepancies between the model and the real robot. Estimation and control are formalized as an inference problem where the body posterior state distribution is approximated by means of the variational free-energy bound, yielding to a minimization of the prediction error. Besides, our study forecasts reactive actions in the presence of sensorimotor conflicts, a mechanism that may be relevant in human body adaptation to uncertain situations.
This item appears in the following Collection(s)
- Academic publications [202802]
- Faculty of Social Sciences [27107]
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