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Complexity of bird song caused by adversarial imitation learning

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Title: Complexity of bird song caused by adversarial imitation learning
Authors: Yamazaki, Seiya Browse this author
Iizuka, Hiroyuki Browse this author →KAKEN DB
Yamamoto, Masahito Browse this author →KAKEN DB
Keywords: Adversarial imitation learning
Issue Date: Feb-2020
Publisher: Springer
Journal Title: Artificial life and robotics
Volume: 25
Issue: 1
Start Page: 124
End Page: 132
Publisher DOI: 10.1007/s10015-019-00559-5
Abstract: Biological evolution produces complexity through genetic variations based on randomness. In conventional communication or language simulation models, genetic variations based on randomness and fitness function rewarding task achievements play an important role in evolving communication signals to complex ones. However, it is known that not only genetic variations evolve communication but also imitative learning during developmental processes contributes to the evolution of communication. What we investigated here was to find a different principle of generating complexity which does not rely on the randomness or external environmental complexity but only on the learning processes in communication. Our hypothesis is that the contradictory learning mechanism we call the adversarial imitation learning can work to increase the complexity without relying on the random processes. To investigate our hypothesis, we implemented the adversarial imitation learning on a simulation where two agents interact with and imitate each other. Our results showed that the adversarial imitation learning causes chaotic dynamics and investigating the learning results in different types of interaction between the two; it was clarified that the adversarial imitation learning is necessary for the emergence of the chaotic time series.
Rights: This is a post-peer-review, pre-copyedit version of an article published in Artificial Life and Robotics. The final authenticated version is available online at:
Type: article (author version)
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山本 雅人

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