{"id":"https://openalex.org/W1556245316","doi":"https://doi.org/10.1007/978-3-540-85097-7_27","title":"An Improved Approximation Algorithm for the Capacitated Multicast Tree Routing Problem","display_name":"An Improved Approximation Algorithm for the Capacitated Multicast Tree Routing Problem","publication_year":2008,"publication_date":"2008-08-19","ids":{"openalex":"https://openalex.org/W1556245316","doi":"https://doi.org/10.1007/978-3-540-85097-7_27","mag":"1556245316"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-540-85097-7_27","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-85097-7_27","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5072627238","display_name":"Zhipeng Cai","orcid":"https://orcid.org/0000-0001-6017-975X"},"institutions":[{"id":"https://openalex.org/I154425047","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27","country_code":"CA","type":"education","lineage":["https://openalex.org/I154425047"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Zhipeng Cai","raw_affiliation_strings":["Department of Computing Science, University of Alberta, Edmonton, Alberta, T6G 2E8, Canada","Department of Computing Science, University of Alberta, Edmonton, Canada","Department of Computing Science, University of Alberta, Edmonton, Canada T6G-2E8"],"affiliations":[{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Alberta, T6G 2E8, Canada","institution_ids":["https://openalex.org/I154425047"]},{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Canada","institution_ids":["https://openalex.org/I154425047"]},{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Canada T6G-2E8","institution_ids":["https://openalex.org/I154425047"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101483230","display_name":"Zhi\u2010Zhong Chen","orcid":"https://orcid.org/0000-0003-3061-1171"},"institutions":[{"id":"https://openalex.org/I165522056","display_name":"Tokyo Denki University","ror":"https://ror.org/01pa62v70","country_code":"JP","type":"education","lineage":["https://openalex.org/I165522056"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Zhi-Zhong Chen","raw_affiliation_strings":["Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Japan","Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan","Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Japan 350-0394#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Japan","institution_ids":["https://openalex.org/I165522056"]},{"raw_affiliation_string":"Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Saitama, 350-0394, Japan","institution_ids":["https://openalex.org/I165522056"]},{"raw_affiliation_string":"Department of Mathematical Sciences, Tokyo Denki University, Hatoyama, Japan 350-0394#TAB#","institution_ids":["https://openalex.org/I165522056"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089344475","display_name":"Guohui Lin","orcid":"https://orcid.org/0000-0003-4283-3396"},"institutions":[{"id":"https://openalex.org/I154425047","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27","country_code":"CA","type":"education","lineage":["https://openalex.org/I154425047"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Guohui Lin","raw_affiliation_strings":["Department of Computing Science, University of Alberta, Edmonton, Alberta, T6G 2E8, Canada","Department of Computing Science, University of Alberta, Edmonton, Canada","Department of Computing Science, University of Alberta, Edmonton, Canada T6G-2E8"],"affiliations":[{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Alberta, T6G 2E8, Canada","institution_ids":["https://openalex.org/I154425047"]},{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Canada","institution_ids":["https://openalex.org/I154425047"]},{"raw_affiliation_string":"Department of Computing Science, University of Alberta, Edmonton, Canada T6G-2E8","institution_ids":["https://openalex.org/I154425047"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065315257","display_name":"Lusheng Wang","orcid":"https://orcid.org/0000-0002-4344-8791"},"institutions":[{"id":"https://openalex.org/I168719708","display_name":"City University of Hong Kong","ror":"https://ror.org/03q8dnn23","country_code":"HK","type":"education","lineage":["https://openalex.org/I168719708"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Lusheng Wang","raw_affiliation_strings":["Department of Computer Science, City University of Hong Kong, Hong Kong","Department of Computer Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong","Department of Computer Science, City University of Hong Kong, Hong Kong,#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, City University of Hong Kong, Hong Kong","institution_ids":["https://openalex.org/I168719708"]},{"raw_affiliation_string":"Department of Computer Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong","institution_ids":["https://openalex.org/I168719708"]},{"raw_affiliation_string":"Department of Computer Science, City University of Hong Kong, Hong Kong,#TAB#","institution_ids":["https://openalex.org/I168719708"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5072627238"],"corresponding_institution_ids":["https://openalex.org/I154425047"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":7.3226,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.96822875,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"286","last_page":"295"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10847","display_name":"Advanced Optical Network Technologies","score":0.9995999932289124,"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"}},"topics":[{"id":"https://openalex.org/T10847","display_name":"Advanced Optical Network Technologies","score":0.9995999932289124,"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"}},{"id":"https://openalex.org/T10138","display_name":"Network Traffic and Congestion Control","score":0.9994999766349792,"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/T10374","display_name":"Advanced Graph Theory Research","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/steiner-tree-problem","display_name":"Steiner tree problem","score":0.8199223279953003},{"id":"https://openalex.org/keywords/multicast","display_name":"Multicast","score":0.8015930652618408},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7272744178771973},{"id":"https://openalex.org/keywords/routing","display_name":"Routing (electronic design automation)","score":0.7103884220123291},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.6693521738052368},{"id":"https://openalex.org/keywords/node","display_name":"Node (physics)","score":0.500112771987915},{"id":"https://openalex.org/keywords/routing-algorithm","display_name":"Routing algorithm","score":0.4288177490234375},{"id":"https://openalex.org/keywords/approximation-algorithm","display_name":"Approximation algorithm","score":0.42067956924438477},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3695068359375},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3069797158241272},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.27939915657043457},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.2577223777770996},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.23389601707458496},{"id":"https://openalex.org/keywords/routing-protocol","display_name":"Routing protocol","score":0.18604132533073425},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.049877047538757324}],"concepts":[{"id":"https://openalex.org/C76220878","wikidata":"https://www.wikidata.org/wiki/Q1764144","display_name":"Steiner tree problem","level":2,"score":0.8199223279953003},{"id":"https://openalex.org/C32295351","wikidata":"https://www.wikidata.org/wiki/Q899288","display_name":"Multicast","level":2,"score":0.8015930652618408},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7272744178771973},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.7103884220123291},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.6693521738052368},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.500112771987915},{"id":"https://openalex.org/C2984173633","wikidata":"https://www.wikidata.org/wiki/Q22725","display_name":"Routing algorithm","level":4,"score":0.4288177490234375},{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.42067956924438477},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3695068359375},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3069797158241272},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.27939915657043457},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2577223777770996},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.23389601707458496},{"id":"https://openalex.org/C104954878","wikidata":"https://www.wikidata.org/wiki/Q1648707","display_name":"Routing protocol","level":3,"score":0.18604132533073425},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.049877047538757324},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-540-85097-7_27","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-540-85097-7_27","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1481747612","https://openalex.org/W1506292197","https://openalex.org/W1519758470","https://openalex.org/W1551386151","https://openalex.org/W1588547096","https://openalex.org/W1975490853","https://openalex.org/W1990327548","https://openalex.org/W2004240896","https://openalex.org/W2045864518","https://openalex.org/W2081831441","https://openalex.org/W2092603347","https://openalex.org/W2096774592","https://openalex.org/W2101270523","https://openalex.org/W2109954492"],"related_works":["https://openalex.org/W2367195720","https://openalex.org/W1968497507","https://openalex.org/W1998126097","https://openalex.org/W2362006006","https://openalex.org/W1980288485","https://openalex.org/W2009976792","https://openalex.org/W2021808862","https://openalex.org/W3184075718","https://openalex.org/W2995411114","https://openalex.org/W2004321562"],"abstract_inverted_index":null,"counts_by_year":[{"year":2022,"cited_by_count":5},{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":2}],"updated_date":"2026-01-05T23:09:59.299951","created_date":"2025-10-10T00:00:00"}
