Automatic Evolution of Multimodal Behavior with Multi-Brain HyperNEAT
Research output: Conference Article in Proceeding or Book/Report chapter › Article in proceedings › Research › peer-review
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Automatic Evolution of Multimodal Behavior with Multi-Brain HyperNEAT. / Schrum, Jacob; Lehman, Joel; Risi, Sebastian.
Proceedings of the 2016 on Genetic and Evolutionary Computation Conference Companion. New York, NY, USA : Association for Computing Machinery, 2016. p. 21-22.Research output: Conference Article in Proceeding or Book/Report chapter › Article in proceedings › Research › peer-review
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TY - GEN
T1 - Automatic Evolution of Multimodal Behavior with Multi-Brain HyperNEAT
AU - Schrum, Jacob
AU - Lehman, Joel
AU - Risi, Sebastian
PY - 2016
Y1 - 2016
N2 - An important challenge in neuroevolution is to evolve multimodal behavior. Indirect network encodings can potentially answer this challenge. Yet in practice, indirect encodings do not yield effective multimodal controllers. This paper introduces novel multimodal extensions to HyperNEAT, a popular indirect encoding. A previous multimodal approach called situational policy geometry assumes that multiple brains benefit from being embedded within an explicit geometric space. However, this paper introduces HyperNEAT extensions for evolving many brains without assuming geometric relationships between them. The resulting Multi-Brain HyperNEAT can exploit human-specified task divisions, or can automatically discover when brains should be used, and how many to use. Experiments show that multi-brain approaches are more effective than HyperNEAT without multimodal extensions, and that brains without a geometric relation to each other are superior.
AB - An important challenge in neuroevolution is to evolve multimodal behavior. Indirect network encodings can potentially answer this challenge. Yet in practice, indirect encodings do not yield effective multimodal controllers. This paper introduces novel multimodal extensions to HyperNEAT, a popular indirect encoding. A previous multimodal approach called situational policy geometry assumes that multiple brains benefit from being embedded within an explicit geometric space. However, this paper introduces HyperNEAT extensions for evolving many brains without assuming geometric relationships between them. The resulting Multi-Brain HyperNEAT can exploit human-specified task divisions, or can automatically discover when brains should be used, and how many to use. Experiments show that multi-brain approaches are more effective than HyperNEAT without multimodal extensions, and that brains without a geometric relation to each other are superior.
KW - indirect encoding, modularity, multimodal behavior
U2 - 10.1145/2908961.2908965
DO - 10.1145/2908961.2908965
M3 - Konferencebidrag i proceedings
SN - 978-1-4503-4323-7
SP - 21
EP - 22
BT - Proceedings of the 2016 on Genetic and Evolutionary Computation Conference Companion
PB - Association for Computing Machinery
CY - New York, NY, USA
ER -
ID: 81555074