Full-text not available in DiVA
Author:
Elfwing, Stefan (KTH, School of Computer Science and Communication (CSC), Computer Vision and Active Perception, CVAP)
Uchibe, Eiji (KTH, School of Computer Science and Communication (CSC), Centres, Centre for Autonomous Systems, CAS)
Doya, Kenji (KTH, School of Computer Science and Communication (CSC), Centres, Centre for Autonomous Systems, CAS)
Christensen, Henrik (KTH, School of Computer Science and Communication (CSC), Centres, Centre for Autonomous Systems, CAS)
Title:
Darwinian Embodied Evolution of the Learning Ability for Survival
Department:
KTH, School of Computer Science and Communication (CSC), Centres, Centre for Autonomous Systems, CAS
KTH, School of Computer Science and Communication (CSC), Computer Vision and Active Perception, CVAP
Publication type:
Article in journal (Refereed)
Language:
English
Status:
Published
In:
Adaptive Behavior(ISSN 1059-7123)(EISSN 1741-2633)
Volume:
19
Issue:
2
Pages:
101-102
Year of publ.:
2011
URI:
urn:nbn:se:kth:diva-7567
Permanent link:
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-7567
ISI:
000289714900002
Subject category:
Computer Science
SVEP category:
Computer science
Keywords(en) :
Embodied evolution; evolutionary robotics; reinforcement learning; meta-learning; shaping rewards; metaparameters
Abstract(en) :

In this article we propose a framework for performing embodied evolution with a limited number of robots, by utilizing time-sharing in subpopulations of virtual agents hosted in each robot. Within this framework, we explore the combination of within-generation learning of basic survival behaviors by reinforcement learning, and evolutionary adaptations over the generations of the basic behavior selection policy, the reward functions, and metaparameters for reinforcement learning. We apply a biologically inspired selection scheme, in which there is no explicit communication of the individuals' fitness information. The individuals can only reproduce offspring by mating-a pair-wise exchange of genotypes-and the probability that an individual reproduces offspring in its own subpopulation is dependent on the individual's "health," that is, energy level, at the mating occasion. We validate the proposed method by comparing it with evolution using standard centralized selection, in simulation, and by transferring the obtained solutions to hardware using two real robots.

Note:
QC 20110509 ändrad från submitted till pulished 20110509
Available from:
2007-10-23
Created:
2007-10-23
Last updated:
2011-05-09
Statistics:
40 hits