{"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00238537","sets":["1164:3616:11475:11763"]},"path":["11763"],"owner":"44499","recid":"238537","title":["シリーズ映像の順次視聴におけるキャッシュ映像配信システムのキャッシュ効率低下に関する一考察"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-08-28"},"_buckets":{"deposit":"8cca203a-f3a8-4b8d-8c28-b782a3d6e133"},"_deposit":{"id":"238537","pid":{"type":"depid","value":"238537","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"シリーズ映像の順次視聴におけるキャッシュ映像配信システムのキャッシュ効率低下に関する一考察","author_link":["653220","653219"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"シリーズ映像の順次視聴におけるキャッシュ映像配信システムのキャッシュ効率低下に関する一考察"},{"subitem_title":"A Study on the Cache Efficiency Degradation in a Cache Video Distribution System for the Condition of Sequential Viewing of Video Series","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"2024-08-28","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"広島大学"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Hiroshima University","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/238537/files/IPSJ-AVM24125002.pdf","label":"IPSJ-AVM24125002.pdf"},"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-AVM24125002.pdf","filesize":[{"value":"1.1 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"27"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_login","version_id":"3c4218de-b53a-4e26-882e-7461e1162ecd","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Institute of Electronics, Information and Communication Engineers This SIG report is only available to those in membership of the SIG."}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"児玉, 明"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Mei, Kodama","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10438399","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":"2188-8582","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"キャッシュ映像配信システムにおいて，視聴サービスの安定性，及び映像データ伝送の効率化を鑑みると，キャッシュヒット率向上が鍵となる．定額制 VoD 型視聴サービスにおいて，新しい映像登録がない状況下では，利用者の視聴開始時から徐々に映像の視聴分散が進みキャッシュヒット率低下の問題を有する．そこで，まずはじめにキャッシュ映像配信システムを設計し，利用者の嗜好カテゴリを定義し，視聴偏りを有するカテゴリ内のシリーズ映像を順次視聴する視聴サービスモデルを設計する．本研究では，本モデルにおけるキャッシュヒット率限界に基づいたキャッシュヒット率向上を目的とし，シミュレーション実験により当該ヒット率を評価する．更に，視聴確率の観点からヒット率低下状況を明らかにし，その対処方法について考察する．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"In cache video distribution systems, improving the cache hit ratio is critical to stabilizing the viewing service and increasing the efficiency of video data transmission. In a subscription-based VoD-type viewing service, under conditions where there are no new video registrations, there is a problem of a decrease in cache ratio due to the gradual dispersion of video viewing from the time users start viewing. This paper first designs a cache video distribution system and defines user preference categories. It then designs a viewing service model in which a series of videos in a category with a viewing bias are viewed sequentially. This study aims to improve the hit ratio based on the cache hit ratio limit in this model and evaluates the ratio through simulation experiments. Furthermore, conditions that reduce the hit ratio are clarified from the viewing probability perspective, and countermeasures against such conditions are discussed.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告オーディオビジュアル複合情報処理（AVM）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2024-08-28","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicVolumeNumber":"2024-AVM-125"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"id":238537,"updated":"2025-01-19T08:32:09.676221+00:00","links":{},"created":"2025-01-19T01:41:49.641054+00:00"}