{"created":"2025-01-19T01:37:30.214105+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00235808","sets":["6504:11678:11696"]},"path":["11696"],"owner":"44499","recid":"235808","title":["Geo-Indistinguishabilityを満たす位置匿名化におけるδ-spannerを使用した計算時間と有効性の評価"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-03-01"},"_buckets":{"deposit":"c5040119-362e-4fce-96eb-aba10f1add1b"},"_deposit":{"id":"235808","pid":{"type":"depid","value":"235808","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"Geo-Indistinguishabilityを満たす位置匿名化におけるδ-spannerを使用した計算時間と有効性の評価","author_link":["644398","644400","644399"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Geo-Indistinguishabilityを満たす位置匿名化におけるδ-spannerを使用した計算時間と有効性の評価"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"データとウェブ","subitem_subject_scheme":"Other"}]},"item_type_id":"22","publish_date":"2024-03-01","item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_22_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"お茶の水女子大"},{"subitem_text_value":"日本IBM"},{"subitem_text_value":"お茶の水女子大"}]},"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/235808/files/IPSJ-Z86-4M-07.pdf","label":"IPSJ-Z86-4M-07.pdf"},"date":[{"dateType":"Available","dateValue":"2024-07-03"}],"format":"application/pdf","filename":"IPSJ-Z86-4M-07.pdf","filesize":[{"value":"1.9 MB"}],"mimetype":"application/pdf","accessrole":"open_date","version_id":"3e10702f-aac9-41a4-beed-ce22543f57a2","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Information Processing Society of Japan"}]},"item_22_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石神, 京佳"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"榎, 美紀"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小口, 正人"}],"nameIdentifiers":[{}]}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_5794","resourcetype":"conference paper"}]},"item_22_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00349328","subitem_source_identifier_type":"NCID"}]},"item_22_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"ユーザがモバイル端末の位置情報を提供して、現在地付近の情報を得るようなサービスは近年多く存在するが、位置情報をそのままサーバに送信して情報分析に使用されることはプライバシ上の懸念がある。滞在人口数のリアルデータを利用し、差分プライバシを位置情報匿名化に拡張した技術であるGeo-Indistinguishabilityを満たすようなユーザ位置のダミー位置をサーバへの問い合わせに使用することで、ユーザの位置情報プライバシを考慮したイベント推薦システムを実装する。本稿では実装範囲の拡大のため、元の位置とノイズ付与後位置の距離の期待値が最小になるように最適化を行う匿名化メカニズムにおいて、δ-spannerを使用し、計算時間の短縮と有効性の評価を行う。","subitem_description_type":"Other"}]},"item_22_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"406","bibliographic_titles":[{"bibliographic_title":"第86回全国大会講演論文集"}],"bibliographicPageStart":"405","bibliographicIssueDates":{"bibliographicIssueDate":"2024-03-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1","bibliographicVolumeNumber":"2024"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":235808,"updated":"2025-01-19T09:30:39.115812+00:00","links":{}}