{"id":"https://openalex.org/W2148665476","doi":"https://doi.org/10.1109/mnet.2010.5578916","title":"Sizing up online social networks","display_name":"Sizing up online social networks","publication_year":2010,"publication_date":"2010-09-01","ids":{"openalex":"https://openalex.org/W2148665476","doi":"https://doi.org/10.1109/mnet.2010.5578916","mag":"2148665476"},"language":"en","primary_location":{"id":"doi:10.1109/mnet.2010.5578916","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mnet.2010.5578916","pdf_url":null,"source":{"id":"https://openalex.org/S186584794","display_name":"IEEE Network","issn_l":"0890-8044","issn":["0890-8044","1558-156X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Network","raw_type":"journal-article"},"type":"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/A5034593239","display_name":"Reza Rejaie","orcid":"https://orcid.org/0000-0002-9654-1316"},"institutions":[{"id":"https://openalex.org/I181233156","display_name":"University of Oregon","ror":"https://ror.org/0293rh119","country_code":"US","type":"education","lineage":["https://openalex.org/I181233156"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Reza Rejaie","raw_affiliation_strings":["University of Oregon, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Oregon, USA","institution_ids":["https://openalex.org/I181233156"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019550141","display_name":"Mojtaba Torkjazi","orcid":null},"institutions":[{"id":"https://openalex.org/I181233156","display_name":"University of Oregon","ror":"https://ror.org/0293rh119","country_code":"US","type":"education","lineage":["https://openalex.org/I181233156"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mojtaba Torkjazi","raw_affiliation_strings":["University of Oregon, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Oregon, USA","institution_ids":["https://openalex.org/I181233156"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048525298","display_name":"Masoud Valafar","orcid":null},"institutions":[{"id":"https://openalex.org/I181233156","display_name":"University of Oregon","ror":"https://ror.org/0293rh119","country_code":"US","type":"education","lineage":["https://openalex.org/I181233156"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Masoud Valafar","raw_affiliation_strings":["Computer Science Department, University of Oregon, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computer Science Department, University of Oregon, USA","institution_ids":["https://openalex.org/I181233156"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5082255432","display_name":"Walter Willinger","orcid":"https://orcid.org/0000-0002-1384-8188"},"institutions":[{"id":"https://openalex.org/I1283103587","display_name":"AT&T (United States)","ror":"https://ror.org/02bbd5539","country_code":"US","type":"company","lineage":["https://openalex.org/I1283103587"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Walter Willinger","raw_affiliation_strings":["AT and T Research Laboratories, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AT and T Research Laboratories, USA","institution_ids":["https://openalex.org/I1283103587"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":3.5328,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":{"value":0.93896768,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"24","issue":"5","first_page":"32","last_page":"37"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10064","display_name":"Complex Network Analysis Techniques","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10064","display_name":"Complex Network Analysis Techniques","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11704","display_name":"Mobile Crowdsensing and Crowdsourcing","score":0.9929999709129333,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9921000003814697,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/fraction","display_name":"Fraction (chemistry)","score":0.763465166091919},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7561963796615601},{"id":"https://openalex.org/keywords/population","display_name":"Population","score":0.6878423690795898},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.5601629018783569},{"id":"https://openalex.org/keywords/space","display_name":"Space (punctuation)","score":0.5426266193389893},{"id":"https://openalex.org/keywords/order","display_name":"Order (exchange)","score":0.4580520689487457},{"id":"https://openalex.org/keywords/social-network","display_name":"Social network (sociolinguistics)","score":0.44762393832206726},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.445176899433136},{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.36837664246559143},{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.32916760444641113},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.14221453666687012},{"id":"https://openalex.org/keywords/business","display_name":"Business","score":0.08770772814750671},{"id":"https://openalex.org/keywords/demography","display_name":"Demography","score":0.06877574324607849}],"concepts":[{"id":"https://openalex.org/C149629883","wikidata":"https://www.wikidata.org/wiki/Q660926","display_name":"Fraction (chemistry)","level":2,"score":0.763465166091919},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7561963796615601},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.6878423690795898},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.5601629018783569},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.5426266193389893},{"id":"https://openalex.org/C182306322","wikidata":"https://www.wikidata.org/wiki/Q1779371","display_name":"Order (exchange)","level":2,"score":0.4580520689487457},{"id":"https://openalex.org/C4727928","wikidata":"https://www.wikidata.org/wiki/Q17164759","display_name":"Social network (sociolinguistics)","level":3,"score":0.44762393832206726},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.445176899433136},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.36837664246559143},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.32916760444641113},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.14221453666687012},{"id":"https://openalex.org/C144133560","wikidata":"https://www.wikidata.org/wiki/Q4830453","display_name":"Business","level":0,"score":0.08770772814750671},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.06877574324607849},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/mnet.2010.5578916","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mnet.2010.5578916","pdf_url":null,"source":{"id":"https://openalex.org/S186584794","display_name":"IEEE Network","issn_l":"0890-8044","issn":["0890-8044","1558-156X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Network","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1791587663","https://openalex.org/W1977539401","https://openalex.org/W2000200507","https://openalex.org/W2007201305","https://openalex.org/W2038831956","https://openalex.org/W2122710250","https://openalex.org/W2437814457","https://openalex.org/W6644634631"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2372895414","https://openalex.org/W4385626803","https://openalex.org/W2323581027","https://openalex.org/W2898873337","https://openalex.org/W2902773160","https://openalex.org/W3004463617","https://openalex.org/W2065099951","https://openalex.org/W2993423439","https://openalex.org/W4311717257"],"abstract_inverted_index":{"While":[0],"the":[1,19,33,46,76,80,142,155,177,183,186,194,202,209,212,222,236],"size":[2],"of":[3,23,25,35,48,59,83,89,121,179,188,196,201,204,214,225,232],"popular":[4],"online":[5],"social":[6],"networks":[7],"such":[8],"as":[9],"MySpace":[10,93,164,215],"and":[11,94,96,111,133,159,165,216],"Twitter":[12,95,166],"has":[13],"been":[14],"reported":[15,237],"to":[16,74,153,208],"be":[17,64,116],"in":[18,79,157,182,199],"tens":[20],"or":[21,41],"hundreds":[22],"millions":[24],"users":[26,36,61,123,136,181],"(and":[27],"growing),":[28],"little":[29],"is":[30,228],"known":[31],"about":[32],"fraction":[34,120,178],"who":[37],"have":[38,124],"either":[39],"deleted":[40],"abandoned":[42,125],"their":[43,122,131,168],"accounts.":[44],"Therefore,":[45],"growth":[47,78,156],"an":[49,230],"OSN's":[50],"overall":[51],"user":[52,106,161,172,198],"population":[53,58,224],"and,":[54],"more":[55],"important,":[56],"its":[57],"active":[60,180,223],"cannot":[62],"easily":[63],"determined.":[65,117],"In":[66,211],"this":[67],"article":[68],"we":[69,150,174,192],"describe":[70],"a":[71,87,109,119,197],"measurement":[72],"technique":[73],"infer":[75],"fine-grained":[77],"total":[81,158],"number":[82],"allocated":[84],"accounts":[85,162],"for":[86,163],"class":[88],"OSNs":[90,127,227],"that":[91,114,221],"include":[92],"are":[97,139,151],"characterized":[98],"by":[99],"two":[100,148],"features.":[101],"First,":[102],"they":[103],"assign":[104],"numerical":[105],"IDs":[107],"using":[108],"format":[110],"allocation":[112],"strategy":[113],"can":[115],"Second,":[118],"these":[126,134,147,226],"shortly":[128],"after":[129],"creating":[130],"accounts,":[132,173],"short-lived":[135],"(called":[137],"'tourists')":[138],"scattered":[140],"across":[141],"ID":[143],"space.":[144],"By":[145],"exploiting":[146],"properties,":[149],"able":[152],"determine":[154],"valid":[160,171],"since":[167],"inception.":[169],"For":[170],"also":[175],"derive":[176],"system":[184],"at":[185],"time":[187],"our":[189,218],"experiment,":[190],"where":[191],"define":[193],"activity":[195],"terms":[200],"recency":[203],"her":[205],"last":[206],"visit":[207],"OSN.":[210],"case":[213],"Twitter,":[217],"results":[219],"show":[220],"typically":[229],"order":[231],"magnitude":[233],"smaller":[234],"than":[235],"(total)":[238],"population.":[239]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":7}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
