{"created":"2021-03-01T06:44:07.467569+00:00","id":8673,"links":{},"metadata":{"_buckets":{"deposit":"638f2206-2f18-40de-bce9-a67e023f6aab"},"_deposit":{"created_by":221,"id":"8673","owners":[221],"pid":{"revision_id":0,"type":"depid","value":"8673"},"status":"published"},"_oai":{"id":"oai:tsukuba.repo.nii.ac.jp:00008673","sets":["3:233:244"]},"author_link":["35609"],"item_12_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1995","bibliographicIssueDateType":"Issued"}}]},"item_12_date_granted_46":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"1995-07-31"}]},"item_12_degree_grantor_44":{"attribute_name":"学位授与大学","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_language":"ja","subitem_degreegrantor_name":"筑波大学"},{"subitem_degreegrantor_language":"en","subitem_degreegrantor_name":"University of Tsukuba"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"12102","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_12_degree_name_43":{"attribute_name":"取得学位","attribute_value_mlt":[{"subitem_degreename":"博士（工学） "},{"subitem_degreename":"Doctor of Philosophy in Engineering"}]},"item_12_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Set is a fundametal data structure and plays important role in data modeling not only for traditional database aplications but for advanced ones. The main issue of this dissertation is indexing methods for set-valued objects. Set has several inherent comparison operators such as inclusion ([?]) and membership ([?]). Therefore, indexing methods for set-valued objects must support efficient retrieval of objects under such set retrieval conditions. In this dissertation, superimposed-coded signature files, popular methods in text retrieval area, are proposed as promising indexing methods for set-valued objects. Such signature files are called set-based signature files. In this dissertation, several issues of set-based signature foles, such as organization schemes, retrieval/update algorithms, and availability, are investigated.  ･･･","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_12_description_45":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_description":"1995","subitem_description_type":"Other"}]},"item_12_dissertation_number_47":{"attribute_name":"報告番号","attribute_value_mlt":[{"subitem_dissertationnumber":"乙第1115号"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Ishikawa, Yoshiharu","creatorNameLang":"en"},{"creatorName":"石川, 佳治","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"35609","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":"2013-12-18"}],"displaytype":"detail","filename":"B1115.pdf","filesize":[{"value":"114.2 kB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"abstract","url":"https://tsukuba.repo.nii.ac.jp/record/8673/files/B1115.pdf"},"version_id":"bf65f8f5-68c9-43d2-8bfe-386ed3e748eb"},{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2013-12-18"}],"displaytype":"detail","filename":"1.pdf","filesize":[{"value":"2.9 MB"}],"format":"application/pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://tsukuba.repo.nii.ac.jp/record/8673/files/1.pdf"},"version_id":"0a9de836-e2a9-4879-82f7-01f41da1e7dd"}]},"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":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Organization and analysis of access facilities for set-valued objects based on signature files","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Organization and analysis of access facilities for set-valued objects based on signature files","subitem_title_language":"en"}]},"item_type_id":"12","owner":"221","path":["244"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2007-07-25"},"publish_date":"2007-07-25","publish_status":"0","recid":"8673","relation_version_is_last":true,"title":["Organization and analysis of access facilities for set-valued objects based on signature files"],"weko_creator_id":"221","weko_shared_id":-1},"updated":"2024-01-24T03:49:43.119848+00:00"}