{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00220000","sets":["1164:3500:10803:10983"]},"path":["10983"],"owner":"44499","recid":"220000","title":["情報推薦における好みが類似するユーザーの多い群に対するバイアスの存在と公平性への影響分析"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-09-02"},"_buckets":{"deposit":"3455b672-0723-4d64-a47b-b1b8a5cb5c86"},"_deposit":{"id":"220000","pid":{"type":"depid","value":"220000","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"情報推薦における好みが類似するユーザーの多い群に対するバイアスの存在と公平性への影響分析","author_link":["574670","574668","574671","574669"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"情報推薦における好みが類似するユーザーの多い群に対するバイアスの存在と公平性への影響分析"},{"subitem_title":"The Existence of Mainstream Bias and Analysis of Its Impact on Fairness","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2022-09-02","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"筑波大学"},{"subitem_text_value":"筑波大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"University of Tsukuba","subitem_text_language":"en"},{"subitem_text_value":"University of Tsukuba","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/220000/files/IPSJ-IFAT22148002.pdf","label":"IPSJ-IFAT22148002.pdf"},"date":[{"dateType":"Available","dateValue":"2024-09-02"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-IFAT22148002.pdf","filesize":[{"value":"2.0 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"39"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"bb275b85-c651-4ba0-870e-0a74659b53fd","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2022 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"原, 弥麻人"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"延原, 肇"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yamato, Hara","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hajime, Nobuhara","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10114171","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8884","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"推薦システムにおいて,メインストリームバイアスという,嗜好が多くの人と類似するユーザー(主流派)への推薦の質が高く,一般的でないものを好むユーザー(非主流派)への推薦の質が低くなる現象に関する研究がされている.しかし,従来のメインストリームバイアスの評価には 2 つの課題点がある.1 つ目は,主流派と非主流派をインタラクション (視聴履歴や購入履歴) の類似度で識別し,その精度からメインストリームバイアスを評価していたが,インタラクションの数の影響については考慮していない点である.2 つ目は,協調フィルタリングについての検討のみであり,シーケンシャルレコメンドでは議論がなされていない点である.そこで本研究では,インタラクションの数の影響を考慮するとともに,協調フィルタリングとシーケンシャルの両方のモデルを用いてメインストリームバイアスに対する分析を行う.この分析を通して,従来の評価方法ではメインストリームバイアスを過大に捉えており,また,シーケンシャルレコメンドにおいてもメインストリームバイアスが協調フィルタリングと同様に発生することを示す.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告情報基礎とアクセス技術(IFAT)"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2022-09-02","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicVolumeNumber":"2022-IFAT-148"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":220000,"updated":"2025-01-19T14:42:12.925467+00:00","links":{},"created":"2025-01-19T01:20:03.159681+00:00"}