{"created":"2023-05-15T12:36:02.595668+00:00","id":5207,"links":{},"metadata":{"_buckets":{"deposit":"dc5eefa3-3276-47dd-9270-9eadde48da89"},"_deposit":{"created_by":3,"id":"5207","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"5207"},"status":"published"},"_oai":{"id":"oai:nitech.repo.nii.ac.jp:00005207","sets":["31"]},"author_link":["3028","464","7517"],"item_10001_alternative_title_24":{"attribute_name":"その他（別言語等）のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"ケッテイギ　ニモトズク　オンソ　コンテクスト　ジゲン　ジョウタイ　イチ　ノ　ドウジ　クラスタリング　ニヨル　オンキョウ　モデリング"},{"subitem_alternative_title":"Decision Tree Based Simultaneous Clustering of Phonetic Contexts, Dimensions, and State Positions for Acoustic Modeling"}]},"item_10001_biblio_info_28":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-08-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"8","bibliographicPageEnd":"1602","bibliographicPageStart":"1593","bibliographicVolumeNumber":"J87-D2","bibliographic_titles":[{"bibliographic_title":"電子情報通信学会論文誌. D-2, 情報・システム. 2, パターン処理"}]}]},"item_10001_description_36":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"近年，連続音声認識システムにおける音響モデルとして，前後の音素環境を考慮した音素コンテクスト依存隠れマルコフモデルが広く利用されている．音素コンテクスト依存隠れマルコフモデルを利用する場合，総モデル数が増加し，システムが非常に多くの自由パラメータを含むことになるため，統計的に信頼できるパラメータを推定することが困難になる．このため，様々なパラメータ共有手法が提案されており，中でも音素決定木に基づく状態共有法は，優れた解決法の一つである．しかし，状態単位の共有構造では特徴ベクトルの全次元に同一の共有構造を構築するため，各特徴量に対し，異なる共有構造を構築できない，適切なパラメータ数を割り当てることができない，といった問題点がある．本論文では，記述長最小化基準に基づく次元分割法を導入することにより音素決定木を拡張した，音素・次元決定木を提案する．更に，状態位置に関する分割条件を加え，音素コンテクスト・次元・状態位置を決定木に基づき同時にクラスタリングする手法を提案する．不特定話者連続音声認識実験の結果，提案法は従来の音素決定木に基づく状態共有法と比較して13～15％誤り率を削減することが示された．","subitem_description_type":"Other"}]},"item_10001_description_38":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_10001_full_name_27":{"attribute_name":"著者別名","attribute_value_mlt":[{"affiliations":[{"affiliationNames":[{"affiliationName":"","lang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"","nameIdentifierScheme":"ISNI","nameIdentifierURI":"http://www.isni.org/isni/"}]}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{},{}],"names":[{"name":"Tokuda, Keiichi","nameLang":"en"},{"name":"徳田, 恵一","nameLang":"ja"},{"name":"トクダ, ケイイチ","nameLang":"ja-Kana"}]},{"nameIdentifiers":[{}],"names":[{"name":"Kitamura, Tadashi"}]}]},"item_10001_publisher_29":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Institute of Electronics, Information and Communication Engineers"}]},"item_10001_source_id_30":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"09151923","subitem_source_identifier_type":"ISSN"}]},"item_10001_source_id_32":{"attribute_name":"書誌レコードID（NCID）","attribute_value_mlt":[{"subitem_source_identifier":"AA11340957","subitem_source_identifier_type":"NCID"}]},"item_10001_version_type_33":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"全, 炳河"},{"creatorName":"&EMPTY&","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"http://www.isni.org/isni/"}],"affiliationNames":[{"affiliationName":"","affiliationNameLang":"ja"}]}],"creatorNames":[{"creatorName":"Tokuda, Keiichi","creatorNameLang":"en"},{"creatorName":"徳田, 恵一","creatorNameLang":"ja"},{"creatorName":"トクダ, ケイイチ","creatorNameLang":"ja-Kana"}],"familyNames":[{},{},{}],"givenNames":[{},{},{}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"北村, 正"},{"creatorName":"キタムラ, タダシ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-01-25"}],"displaytype":"detail","filename":"J87-D2_1593.pdf","filesize":[{"value":"873.8 kB"}],"format":"application/pdf","license_note":"Copyright (c) 2004 IEICE　http://search.ieice.org/index.html","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"本文_fulltext","url":"https://nitech.repo.nii.ac.jp/record/5207/files/J87-D2_1593.pdf"},"version_id":"ee0ec7b9-e225-4538-b87e-309d140cb71c"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"決定木に基づく音素コンテクスト・次元・状態位置の同時クラスタリングによる音響モデリング","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"決定木に基づく音素コンテクスト・次元・状態位置の同時クラスタリングによる音響モデリング"}]},"item_type_id":"10001","owner":"3","path":["31"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-11-07"},"publish_date":"2012-11-07","publish_status":"0","recid":"5207","relation_version_is_last":true,"title":["決定木に基づく音素コンテクスト・次元・状態位置の同時クラスタリングによる音響モデリング"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-10T03:01:16.238009+00:00"}