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Nature of collective decision-making by simple yes/no decision units Eisuke Hasegawa

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Title: Nature of collective decision-making by simple yes/no decision units Eisuke Hasegawa
Authors: Hasegawa, Eisuke Browse this author →KAKEN DB
Mizumoto, Nobuaki Browse this author
Kobayashi, Kazuya Browse this author
Dobata, Shigeto Browse this author
Yoshimura, Jin Browse this author
Watanabe, Saori Browse this author
Murakami, Yuuka Browse this author
Matsuura, Kenji Browse this author
Keywords: Cognitive neuroscience
Evolutionary theory
Issue Date: 31-Oct-2017
Publisher: Nature Publishing Group
Journal Title: Scientific reports
Volume: 7
Start Page: 14436
Publisher DOI: 10.1038/s41598-017-14626-z
Abstract: The study of collective decision-making spans various fields such as brain and behavioural sciences, economics, management sciences, and artificial intelligence. Despite these interdisciplinary applications, little is known regarding how a group of simple 'yes/no' units, such as neurons in the brain, can select the best option among multiple options. One prerequisite for achieving such correct choices by the brain is correct evaluation of relative option quality, which enables a collective decision maker to efficiently choose the best option. Here, we applied a sensory discrimination mechanism using yes/no units with differential thresholds to a model for making a collective choice among multiple options. The performance corresponding to the correct choice was shown to be affected by various parameters. High performance can be achieved by tuning the threshold distribution with the options' quality distribution. The number of yes/no units allocated to each option and its variability profoundly affects performance. When this variability is large, a quorum decision becomes superior to a majority decision under some conditions. The general features of this collective decision-making by a group of simple yes/no units revealed in this study suggest that this mechanism may be useful in applications across various fields.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 長谷川 英祐

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