{"created":"2021-03-01T06:20:03.048600+00:00","id":3410,"links":{},"metadata":{"_buckets":{"deposit":"5296b465-46d4-4ea7-b789-414876216c53"},"_deposit":{"id":"3410","owners":[],"pid":{"revision_id":0,"type":"depid","value":"3410"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00003410","sets":["34:105:262","9:233:234"]},"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"A Study to Improve Top-k Combinatorial Search Using Clustering"}]},"item_7_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2012-03-22","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_7_date_granted_25":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2012-03-22"}]},"item_7_degree_name_20":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"修士(情報理工学)"}]},"item_7_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"これまでに, データベースに対する検索システムは, 精度, 再現度, 速度ともにめざましく進歩した. 検索は生活のあらゆるレベルに浸透し, コモディティ化したため, 検索に対する要求も性能面はもちろんのこと, 結果の質においても高い水準のものが求められている. 本論文では, 検索結果の質の高度化を行うべく, データの組み合わせを対象とした検索手法について検討する. この検索には, 組み合わせ爆発という言葉があるとおり, 検索対象が指数関数的に増えてしまう問題がある. そこで, 検索結果の上位だけを高速に求めるTop-k検索技術に注目し, 高速化を行う. 本論文では, 性質の異なる2種類のTop-k組み合わせ検索に対して, クラスタリングを利用した高速化手法を提案し, 有効性を示した.","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"8195","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Suzuki, Takanobu"}]}]},"item_7_select_21":{"attribute_name":"学位","attribute_value_mlt":[{"subitem_select_item":"master"}]},"item_7_subject_13":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"007","subitem_subject_scheme":"NDC"}]},"item_7_text_24":{"attribute_name":"研究科・専攻","attribute_value_mlt":[{"subitem_text_value":"情報理工学系研究科電子情報学専攻"}]},"item_7_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学大学院情報理工学系研究科電子情報学専攻"},{"subitem_text_value":"Department of Information and Communication Engineering, Graduate School of Information Science and Technology, The University of Tokyo"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"鈴木, 貴敦"}],"nameIdentifiers":[{"nameIdentifier":"8194","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-05-31"}],"displaytype":"detail","filename":"48106418.pdf","filesize":[{"value":"2.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"48106418.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/3410/files/48106418.pdf"},"version_id":"13d6d4be-c1f1-4578-9e9a-96c4008412f8"}]},"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":"thesis","resourceuri":"http://purl.org/coar/resource_type/c_46ec"}]},"item_title":"クラスタリングを利用したTop-k組み合わせ検索の効率化に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"クラスタリングを利用したTop-k組み合わせ検索の効率化に関する研究"}]},"item_type_id":"7","owner":"1","path":["234","262"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-05-29"},"publish_date":"2012-05-29","publish_status":"0","recid":"3410","relation_version_is_last":true,"title":["クラスタリングを利用したTop-k組み合わせ検索の効率化に関する研究"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:45:04.498043+00:00"}