{"links":{},"id":191230,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00191230","sets":["1164:1165:9553:9554"]},"path":["9554"],"owner":"11","recid":"191230","title":["オートエンコーダを使用したサンプリング手法による不均衡データの再現度向上"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-09-05"},"_buckets":{"deposit":"d0f8ecb1-c2df-441b-b566-08d615680968"},"_deposit":{"id":"191230","pid":{"type":"depid","value":"191230","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"オートエンコーダを使用したサンプリング手法による不均衡データの再現度向上","author_link":["440201","440200","440199","440198"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"オートエンコーダを使用したサンプリング手法による不均衡データの再現度向上"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"データ分析・AI","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2018-09-05","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Future University Hakodate"},{"subitem_text_value":"Future University Hakodate"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Future University Hakodate","subitem_text_language":"en"},{"subitem_text_value":"Future University Hakodate","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/191230/files/IPSJ-DBS18167024.pdf","label":"IPSJ-DBS18167024.pdf"},"date":[{"dateType":"Available","dateValue":"2020-09-05"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-DBS18167024.pdf","filesize":[{"value":"996.4 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"13"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"e14ec588-dc54-4294-8382-ed60ecd054fe","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2018 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"阪本, 宏輔"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"新美, 礼彦"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Kosuke, Sakamoto","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ayahiko, Niimi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10112482","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":"2188-871X","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"近年，機械学習の精度が向上し，様々なデータに対して機械学習が使用されている．しかし，不均衡データに対して機械学習でクラス判別を行う場合，少数クラスの再現度が低くなるという問題がある．このことから，本稿では不均衡データに機械学習を行った際の再現度向上を目的としている．そこで，本稿ではオートエンコーダを使用し，オーバーサンプリングを行う手法の提案を行った．提案手法では，単に同じデータを複製するわけではなく，少数クラスのデータの特徴を学習することで，その特徴を持った新しいデータを作成することができる．これにより，少数クラスのデータが存在する領域を増やし，少数クラスの再現度向上が期待できる．提案手法の評価実験から，決定木，SVM，Deep Learning，それぞれの機械学習手法において，再現度の向上が確認できた．","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"5","bibliographic_titles":[{"bibliographic_title":"研究報告データベースシステム（DBS）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2018-09-05","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"24","bibliographicVolumeNumber":"2018-DBS-167"}]},"relation_version_is_last":true,"weko_creator_id":"11"},"created":"2025-01-19T00:57:08.206339+00:00","updated":"2025-01-20T00:49:57.462344+00:00"}