乐胖代购免代理版

{"id":"https://openalex.org/W2079936083","doi":"https://doi.org/10.1145/780542.780597","title":"Simpler and better approximation algorithms for network design","display_name":"Simpler and better approximation algorithms for network design","publication_year":2003,"publication_date":"2003-06-09","ids":{"openalex":"https://openalex.org/W2079936083","doi":"https://doi.org/10.1145/780542.780597","mag":"2079936083"},"language":"en","primary_location":{"is_oa":false,"landing_page_url":"https://doi.org/10.1145/780542.780597","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},"type":"article","type_crossref":"proceedings-article","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/A5078381067","display_name":"Anupam Gupta","orcid":"https://orcid.org/0000-0001-5579-3405"},"institutions":[{"id":"https://openalex.org/I74973139","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33","country_code":"US","type":"education","lineage":["https://openalex.org/I74973139"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Anupam Gupta","raw_affiliation_strings":["Carnegie-Mellon University, Pittsburgh, PA."],"affiliations":[{"raw_affiliation_string":"Carnegie-Mellon University, Pittsburgh, PA.","institution_ids":["https://openalex.org/I74973139"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029407896","display_name":"Amit Kumar","orcid":"https://orcid.org/0000-0002-3965-6627"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Amit Kumar","raw_affiliation_strings":["Lucent Bell Labs, Murray Hill, NJ"],"affiliations":[{"raw_affiliation_string":"Lucent Bell Labs, Murray Hill, NJ","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5022886322","display_name":"Tim Roughgarden","orcid":"https://orcid.org/0000-0002-7163-8306"},"institutions":[{"id":"https://openalex.org/I205783295","display_name":"Cornell University","ror":"https://ror.org/05bnh6r87","country_code":"US","type":"education","lineage":["https://openalex.org/I205783295"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Tim Roughgarden","raw_affiliation_strings":["Cornell University (Ithaca, NY);"],"affiliations":[{"raw_affiliation_string":"Cornell University (Ithaca, NY);","institution_ids":["https://openalex.org/I205783295"]}]}],"institution_assertions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":11.717,"has_fulltext":true,"fulltext_origin":"ngrams","cited_by_count":155,"citation_normalized_percentile":{"value":0.970507,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"365","last_page":"372"},"is_retracted":false,"is_paratext":false,"primary_topic":{"id":"https://openalex.org/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9999,"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"}},"topics":[{"id":"https://openalex.org/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9999,"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"}},{"id":"https://openalex.org/T12288","display_name":"Optimization and Search Problems","score":0.9994,"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/T10237","display_name":"Cryptography and Data Security","score":0.9948,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/constant","display_name":"Constant (computer programming)","score":0.45138225},{"id":"https://openalex.org/keywords/approximation-theory","display_name":"Approximation Theory","score":0.44780976}],"concepts":[{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.87906694},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6309783},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5776817},{"id":"https://openalex.org/C114563136","wikidata":"https://www.wikidata.org/wiki/Q19725982","display_name":"Network planning and design","level":2,"score":0.4848572},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.45138225},{"id":"https://openalex.org/C145242015","wikidata":"https://www.wikidata.org/wiki/Q774123","display_name":"Approximation theory","level":2,"score":0.44780976},{"id":"https://openalex.org/C2780586882","wikidata":"https://www.wikidata.org/wiki/Q7520643","display_name":"Simple (philosophy)","level":2,"score":0.42123303},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3846805},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.29507875},{"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/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"is_oa":false,"landing_page_url":"https://doi.org/10.1145/780542.780597","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.43}],"grants":[],"datasets":[],"versions":[],"referenced_works_count":56,"referenced_works":["https://openalex.org/W1532411173","https://openalex.org/W1544515183","https://openalex.org/W1614236348","https://openalex.org/W1755312702","https://openalex.org/W1759768216","https://openalex.org/W1972442117","https://openalex.org/W1981114903","https://openalex.org/W1981673685","https://openalex.org/W1990199392","https://openalex.org/W1990327548","https://openalex.org/W2001139415","https://openalex.org/W2001681959","https://openalex.org/W2002285507","https://openalex.org/W2011232221","https://openalex.org/W2011823863","https://openalex.org/W2017927472","https://openalex.org/W2027682573","https://openalex.org/W2034457158","https://openalex.org/W2038257218","https://openalex.org/W2039298646","https://openalex.org/W2041571997","https://openalex.org/W2045906087","https://openalex.org/W2054655788","https://openalex.org/W2059707428","https://openalex.org/W2068799282","https://openalex.org/W2068811470","https://openalex.org/W2070664846","https://openalex.org/W2082353536","https://openalex.org/W2089897116","https://openalex.org/W2092340542","https://openalex.org/W2094410510","https://openalex.org/W2095969632","https://openalex.org/W2097181193","https://openalex.org/W2102563009","https://openalex.org/W2104701012","https://openalex.org/W2106676868","https://openalex.org/W2107390991","https://openalex.org/W2114493937","https://openalex.org/W2117754372","https://openalex.org/W2120679858","https://openalex.org/W2123138012","https://openalex.org/W2124295613","https://openalex.org/W2133156969","https://openalex.org/W2135071170","https://openalex.org/W2142758253","https://openalex.org/W2142779979","https://openalex.org/W2143061299","https://openalex.org/W2148352980","https://openalex.org/W2160641050","https://openalex.org/W2163150343","https://openalex.org/W2169143327","https://openalex.org/W2174978036","https://openalex.org/W2176308295","https://openalex.org/W2178864388","https://openalex.org/W4245266864","https://openalex.org/W4245494618"],"related_works":["https://openalex.org/W2501971168","https://openalex.org/W2165420145","https://openalex.org/W2103946119","https://openalex.org/W2100107618","https://openalex.org/W2045237525","https://openalex.org/W2020400310","https://openalex.org/W2019306084","https://openalex.org/W1965255372","https://openalex.org/W189995875","https://openalex.org/W1534072310"],"abstract_inverted_index":{"We":[0],"give":[1,31,63,85],"simple":[2,87],"and":[3,54,107],"easy-to-analyze":[4],"randomized":[5,33],"approximation":[6,23,74,89,117],"algorithms":[7,16,75,118],"for":[8,36,60,67,79,91,119],"several":[9],"well-studied":[10],"NP-hard":[11],"network":[12,70,95],"design":[13,96],"problems.":[14],"Our":[15,25,98],"improve":[17],"over":[18,102,114],"the":[19,29,37,56,61,92,120],"previously":[20,105],"best":[21],"known":[22,77],"ratios.":[24],"main":[26],"results":[27],"are":[28],"following.We":[30],"a":[32,64,86],"3.55-approximation":[34],"algorithm":[35,44,66,90],"connected":[39],"facility":[40],"location":[41],"problem.":[42,97,121],"The":[43],"requires":[45],"three":[46],"lines":[47],"to":[48,52],"state,":[49],"one":[50],"page":[51],"analyze,":[53],"improves":[55,101],"best-known":[57],"performance":[58,99],"guarantee":[59,100],"problem.We":[62,84],"5.55-approximation":[65],"virtual":[68],"private":[69],"design.":[71],"Previously,":[72],"constant-factor":[73,88],"were":[76],"only":[78],"special":[80],"cases":[81],"of":[82,111],"this":[83],"single-sink":[93],"buy-at-bulk":[94],"what":[103],"was":[104],"known,":[106],"is":[108],"an":[109],"order":[110],"magnitude":[112],"improvement":[113],"previous":[115],"combinatorial":[116]},"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W2079936083","counts_by_year":[{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":6},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":9}],"updated_date":"2024-12-10T13:06:04.640614","created_date":"2016-06-24"}