ダウンロード数: 97

このアイテムのファイル:
ファイル 記述 サイズフォーマット 
journal.pcbi.1009707.pdf3.85 MBAdobe PDF見る/開く
タイトル: Measuring context dependency in birdsong using artificial neural networks
著者: Morita, Takashi
Koda, Hiroki
Okanoya, Kazuo
Tachibana, Ryosuke O.
著者名の別形: 森田, 尭
香田, 啓貴
岡ノ谷, 一夫
橘, 亮輔
キーワード: Syllables
Finches
Birds
Language
Zebra finch
Acoustics
Bird song
Syntax
発行日: Dec-2021
出版者: Public Library of Science (PLoS)
誌名: PLOS Computational Biology
巻: 17
号: 12
論文番号: e1009707
抄録: Context dependency is a key feature in sequential structures of human language, which requires reference between words far apart in the produced sequence. Assessing how long the past context has an effect on the current status provides crucial information to understand the mechanism for complex sequential behaviors. Birdsongs serve as a representative model for studying the context dependency in sequential signals produced by non-human animals, while previous reports were upper-bounded by methodological limitations. Here, we newly estimated the context dependency in birdsongs in a more scalable way using a modern neural-network-based language model whose accessible context length is sufficiently long. The detected context dependency was beyond the order of traditional Markovian models of birdsong, but was consistent with previous experimental investigations. We also studied the relation between the assumed/auto-detected vocabulary size of birdsong (i.e., fine- vs. coarse-grained syllable classifications) and the context dependency. It turned out that the larger vocabulary (or the more fine-grained classification) is assumed, the shorter context dependency is detected.
著作権等: © 2021 Morita et al.
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
URI: http://hdl.handle.net/2433/276543
DOI(出版社版): 10.1371/journal.pcbi.1009707
PubMed ID: 34962915
出現コレクション:学術雑誌掲載論文等

アイテムの詳細レコードを表示する

Export to RefWorks


出力フォーマット 


このアイテムは次のライセンスが設定されています: クリエイティブ・コモンズ・ライセンス Creative Commons