{"id":"https://openalex.org/W1974567673","doi":"https://doi.org/10.3390/a2030953","title":"Improving the Competitive Ratio of the Online OVSF Code Assignment Problem","display_name":"Improving the Competitive Ratio of the Online OVSF Code Assignment Problem","publication_year":2009,"publication_date":"2009-07-17","ids":{"openalex":"https://openalex.org/W1974567673","doi":"https://doi.org/10.3390/a2030953","mag":"1974567673"},"language":"en","primary_location":{"id":"doi:10.3390/a2030953","is_oa":true,"landing_page_url":"https://doi.org/10.3390/a2030953","pdf_url":"https://www.mdpi.com/1999-4893/2/3/953/pdf?version=1247818865","source":{"id":"https://openalex.org/S190629608","display_name":"Algorithms","issn_l":"1999-4893","issn":["1999-4893"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Algorithms","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1999-4893/2/3/953/pdf?version=1247818865","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101641045","display_name":"Shuichi Miyazaki","orcid":"https://orcid.org/0000-0003-0369-1970"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shuichi Miyazaki","raw_affiliation_strings":["Academic Center for Computing and Media Studies, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan"],"affiliations":[{"raw_affiliation_string":"Academic Center for Computing and Media Studies, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan","institution_ids":["https://openalex.org/I22299242"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048046690","display_name":"Kazuya Okamoto","orcid":"https://orcid.org/0000-0002-9079-2253"},"institutions":[{"id":"https://openalex.org/I22299242","display_name":"Kyoto University","ror":"https://ror.org/02kpeqv85","country_code":"JP","type":"education","lineage":["https://openalex.org/I22299242"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Kazuya Okamoto","raw_affiliation_strings":["Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan"],"affiliations":[{"raw_affiliation_string":"Graduate School of Informatics, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan","institution_ids":["https://openalex.org/I22299242"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5048046690"],"corresponding_institution_ids":["https://openalex.org/I22299242"],"apc_list":{"value":1400,"currency":"CHF","value_usd":1515},"apc_paid":{"value":1400,"currency":"CHF","value_usd":1515},"fwci":0.6857,"has_fulltext":true,"cited_by_count":2,"citation_normalized_percentile":{"value":0.7055094,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"2","issue":"3","first_page":"953","last_page":"972"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12288","display_name":"Optimization and Search Problems","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12288","display_name":"Optimization and Search Problems","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":0.9854000210762024,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9851999878883362,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/competitive-analysis","display_name":"Competitive analysis","score":0.9206234216690063},{"id":"https://openalex.org/keywords/upper-and-lower-bounds","display_name":"Upper and lower bounds","score":0.7664176225662231},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6849753856658936},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.6793820858001709},{"id":"https://openalex.org/keywords/online-algorithm","display_name":"Online algorithm","score":0.618015706539154},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.5990651249885559},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5804003477096558},{"id":"https://openalex.org/keywords/sequence","display_name":"Sequence (biology)","score":0.4521508514881134},{"id":"https://openalex.org/keywords/competitive-advantage","display_name":"Competitive advantage","score":0.43394821882247925},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3615054190158844},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3259729743003845},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.26348593831062317},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.19119372963905334},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.05979204177856445}],"concepts":[{"id":"https://openalex.org/C102408133","wikidata":"https://www.wikidata.org/wiki/Q5156350","display_name":"Competitive analysis","level":3,"score":0.9206234216690063},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.7664176225662231},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6849753856658936},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.6793820858001709},{"id":"https://openalex.org/C196921405","wikidata":"https://www.wikidata.org/wiki/Q786431","display_name":"Online algorithm","level":2,"score":0.618015706539154},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.5990651249885559},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5804003477096558},{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.4521508514881134},{"id":"https://openalex.org/C58546491","wikidata":"https://www.wikidata.org/wiki/Q1150207","display_name":"Competitive advantage","level":2,"score":0.43394821882247925},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3615054190158844},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3259729743003845},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.26348593831062317},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.19119372963905334},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.05979204177856445},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C162853370","wikidata":"https://www.wikidata.org/wiki/Q39809","display_name":"Marketing","level":1,"score":0.0},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/a2030953","is_oa":true,"landing_page_url":"https://doi.org/10.3390/a2030953","pdf_url":"https://www.mdpi.com/1999-4893/2/3/953/pdf?version=1247818865","source":{"id":"https://openalex.org/S190629608","display_name":"Algorithms","issn_l":"1999-4893","issn":["1999-4893"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Algorithms","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:97a0554f51cc469287c92740c30ddaca","is_oa":true,"landing_page_url":"https://doaj.org/article/97a0554f51cc469287c92740c30ddaca","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Algorithms, Vol 2, Iss 3, Pp 953-972 (2009)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1999-4893/2/3/953/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/a2030953","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Algorithms","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/a2030953","is_oa":true,"landing_page_url":"https://doi.org/10.3390/a2030953","pdf_url":"https://www.mdpi.com/1999-4893/2/3/953/pdf?version=1247818865","source":{"id":"https://openalex.org/S190629608","display_name":"Algorithms","issn_l":"1999-4893","issn":["1999-4893"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Algorithms","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W1974567673.pdf","grobid_xml":"https://content.openalex.org/works/W1974567673.grobid-xml"},"referenced_works_count":13,"referenced_works":["https://openalex.org/W1518384680","https://openalex.org/W1594511431","https://openalex.org/W1604224724","https://openalex.org/W1803236231","https://openalex.org/W1967267438","https://openalex.org/W1980218473","https://openalex.org/W2140158451","https://openalex.org/W2161146565","https://openalex.org/W4235877784","https://openalex.org/W6635497032","https://openalex.org/W6636143427","https://openalex.org/W6645060935","https://openalex.org/W6679099085"],"related_works":["https://openalex.org/W4213299358","https://openalex.org/W2564742953","https://openalex.org/W2793095688","https://openalex.org/W1623410360","https://openalex.org/W3115340459","https://openalex.org/W2950803469","https://openalex.org/W2583614279","https://openalex.org/W2004975914","https://openalex.org/W2109659895","https://openalex.org/W4390751688"],"abstract_inverted_index":{"Online":[0],"OVSF":[1],"code":[2],"assignment":[3],"has":[4],"an":[5,18,74,90],"important":[6],"application":[7],"to":[8,55],"wireless":[9],"communications.":[10],"Recently,":[11],"this":[12,50],"problem":[13],"was":[14],"formally":[15],"modeled":[16],"as":[17],"online":[19,24],"problem,":[20],"and":[21,37,46,57],"performances":[22],"of":[23,82],"algorithms":[25],"have":[26],"been":[27],"analyzed":[28],"by":[29,72],"the":[30,41,67,79],"competitive":[31,42,80],"analysis.":[32],"The":[33],"previous":[34],"best":[35],"upper":[36,68],"lower":[38],"bounds":[39],"on":[40],"ratio":[43,81],"were":[44],"10":[45],"5/3,":[47],"respectively.":[48,59],"In":[49],"paper,":[51],"we":[52],"improve":[53],"them":[54],"7":[56,86],"2,":[58],"We":[60],"also":[61],"show":[62],"that":[63],"our":[64,83],"analysis":[65],"for":[66,77,89],"bound":[69],"is":[70,85],"tight":[71],"giving":[73],"input":[75],"sequence":[76],"which":[78],"algorithm":[84],"\u2015":[87],"\u03b5":[88,93],"arbitrary":[91],"constant":[92],"&gt;":[94],"0.":[95]},"counts_by_year":[{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
