{"created":"2023-05-15T08:43:59.223486+00:00","id":9168,"links":{},"metadata":{"_buckets":{"deposit":"6f483615-c4af-445a-9aef-560a3c8e7b90"},"_deposit":{"created_by":13,"id":"9168","owners":[13],"pid":{"revision_id":0,"type":"depid","value":"9168"},"status":"published"},"_oai":{"id":"oai:uec.repo.nii.ac.jp:00009168","sets":["6"]},"author_link":["25083","24771","25084","25085"],"control_number":"9168","item_10001_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-03-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"３","bibliographicPageEnd":"542","bibliographicPageStart":"531","bibliographicVolumeNumber":"J96–D","bibliographic_titles":[{"bibliographic_title":"電子情報通信学会論文誌,D,情報・システム","bibliographic_titleLang":"ja"}]}]},"item_10001_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"近年推薦システムの研究において，その有用性は予測精度（適合率，再現率）の高さとされていたが，既存の推薦方法では，ユーザは予測精度の高さだけでは満足しないということが報告されている．したがって，今後の推薦システムの課題として，未知性や意外性といった予測精度以外の新たな観点が重要とされている．こうした課題を踏まえ，本論文では推薦リストの未知性という観点に着目し，ユーザの嗜好に合致するが，まだ知らないコンテンツの発見を促す推薦手法を提案する．多面的に付与されたタグの話題単位で推薦リストを多様化することにより，予測精度を維持しつつ，未知性を向上させる．評価実験の結果，推薦リストの約6割に嗜好に合致し，かつ知らないコンテンツが含まれ，未知性の高い推薦が実現できていることを確認した．","subitem_description_type":"Abstract"},{"subitem_description":"The traditional recommendation approaches are evaluated based on accuracy, i.e., precision and recall. However, by this approaches, it has been reported that a user is not satisfied only with the accuracy. Therefore, this paper focuses on novelty in order to recommend interesting and unknown items. By diversifying recommended list on topics of tag clusters, our approach improves not only accuracy but also novelty. According to our experimental results, there are about 60% interesting and unknown are recommended.","subitem_description_type":"Abstract"}]},"item_10001_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"電子情報通信学会"}]},"item_10001_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://search.ieice.org/index.html","subitem_relation_type_select":"URI"}}]},"item_10001_rights_15":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright © 2013 IEICE"}]},"item_10001_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1881-0225","subitem_source_identifier_type":"ISSN"}]},"item_10001_version_type_20":{"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":"藤原, 誠","creatorNameLang":"ja"},{"creatorName":"フジワラ, マコト","creatorNameLang":"ja-Kana"},{"creatorName":"FUJIWARA, Makoto","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"中川, 博之","creatorNameLang":"ja"},{"creatorName":"ナカガワ, ヒロユキ","creatorNameLang":"ja-Kana"},{"creatorName":"NAKAGAWA, Hiroyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田原, 康之","creatorNameLang":"ja"},{"creatorName":"タハラ, ヤスユキ","creatorNameLang":"ja-Kana"},{"creatorName":"TAHARA, Yasuyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"大須賀, 昭彦","creatorNameLang":"ja"},{"creatorName":"オオスガ, アキヒコ","creatorNameLang":"ja-Kana"},{"creatorName":"OHSUGA, Akihiko","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-05-08"}],"displaytype":"detail","filename":"j96-d_3_531.pdf","filesize":[{"value":"1.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"j96-d_3_531","url":"https://uec.repo.nii.ac.jp/record/9168/files/j96-d_3_531.pdf"},"version_id":"9a4e7853-32f6-4e24-ab32-350983a6121f"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"recommender systems","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"folksonomy","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"novelty","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"推薦システム","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"フォークソノミー","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"未知性","subitem_subject_language":"ja","subitem_subject_scheme":"Other"}]},"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":"タグクラスタ多様化による未知性を考慮した推薦手法の提案","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"タグクラスタ多様化による未知性を考慮した推薦手法の提案","subitem_title_language":"ja"},{"subitem_title":"Improving Recommendation Novelty Based on Tag Cluster Diversification","subitem_title_language":"en"}]},"item_type_id":"10001","owner":"13","path":["6"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2019-05-08"},"publish_date":"2019-05-08","publish_status":"0","recid":"9168","relation_version_is_last":true,"title":["タグクラスタ多様化による未知性を考慮した推薦手法の提案"],"weko_creator_id":"13","weko_shared_id":-1},"updated":"2024-03-04T02:31:54.137377+00:00"}