{"id":"https://openalex.org/W2200959369","doi":"https://doi.org/10.14778/2733004.2733060","title":"SPOT","display_name":"SPOT","publication_year":2014,"publication_date":"2014-08-01","ids":{"openalex":"https://openalex.org/W2200959369","doi":"https://doi.org/10.14778/2733004.2733060","mag":"2200959369"},"language":"en","primary_location":{"id":"doi:10.14778/2733004.2733060","is_oa":false,"landing_page_url":"https://doi.org/10.14778/2733004.2733060","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","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/A5079407867","display_name":"Longbo Kong","orcid":null},"institutions":[{"id":"https://openalex.org/I123534392","display_name":"University of North Texas","ror":"https://ror.org/00v97ad02","country_code":"US","type":"education","lineage":["https://openalex.org/I123534392"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Longbo Kong","raw_affiliation_strings":["University of North Texas, Denton, Texas"],"affiliations":[{"raw_affiliation_string":"University of North Texas, Denton, Texas","institution_ids":["https://openalex.org/I123534392"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101998754","display_name":"Liu Zhi","orcid":"https://orcid.org/0000-0003-1310-7264"},"institutions":[{"id":"https://openalex.org/I123534392","display_name":"University of North Texas","ror":"https://ror.org/00v97ad02","country_code":"US","type":"education","lineage":["https://openalex.org/I123534392"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Zhi Liu","raw_affiliation_strings":["University of North Texas, Denton, Texas"],"affiliations":[{"raw_affiliation_string":"University of North Texas, Denton, Texas","institution_ids":["https://openalex.org/I123534392"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100764456","display_name":"Yan Huang","orcid":"https://orcid.org/0000-0002-0575-0156"},"institutions":[{"id":"https://openalex.org/I123534392","display_name":"University of North Texas","ror":"https://ror.org/00v97ad02","country_code":"US","type":"education","lineage":["https://openalex.org/I123534392"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yan Huang","raw_affiliation_strings":["University of North Texas, Denton, Texas"],"affiliations":[{"raw_affiliation_string":"University of North Texas, Denton, Texas","institution_ids":["https://openalex.org/I123534392"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5079407867"],"corresponding_institution_ids":["https://openalex.org/I123534392"],"apc_list":null,"apc_paid":null,"fwci":7.9445,"has_fulltext":false,"cited_by_count":65,"citation_normalized_percentile":{"value":0.96901855,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"7","issue":"13","first_page":"1681","last_page":"1684"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9998999834060669,"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"}},{"id":"https://openalex.org/T11704","display_name":"Mobile Crowdsensing and Crowdsourcing","score":0.9887999892234802,"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/T11819","display_name":"Data-Driven Disease Surveillance","score":0.9814000129699707,"subfield":{"id":"https://openalex.org/subfields/2713","display_name":"Epidemiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7826188206672668},{"id":"https://openalex.org/keywords/closeness","display_name":"Closeness","score":0.769595205783844},{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.5025293827056885},{"id":"https://openalex.org/keywords/baseline","display_name":"Baseline (sea)","score":0.4322066307067871},{"id":"https://openalex.org/keywords/premise","display_name":"Premise","score":0.42964717745780945},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.39933347702026367},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.39010754227638245},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.37189239263534546},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.0957651138305664}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7826188206672668},{"id":"https://openalex.org/C2779545769","wikidata":"https://www.wikidata.org/wiki/Q5135364","display_name":"Closeness","level":2,"score":0.769595205783844},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.5025293827056885},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.4322066307067871},{"id":"https://openalex.org/C2778023277","wikidata":"https://www.wikidata.org/wiki/Q321703","display_name":"Premise","level":2,"score":0.42964717745780945},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.39933347702026367},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.39010754227638245},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.37189239263534546},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0957651138305664},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"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/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.14778/2733004.2733060","is_oa":false,"landing_page_url":"https://doi.org/10.14778/2733004.2733060","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1495515969","https://openalex.org/W2018277822","https://openalex.org/W2069090820","https://openalex.org/W2110953678","https://openalex.org/W2134746982","https://openalex.org/W2167521368","https://openalex.org/W2168346693","https://openalex.org/W2532561422","https://openalex.org/W3122139608","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W590788508","https://openalex.org/W4235873430","https://openalex.org/W2611974471","https://openalex.org/W4313233093","https://openalex.org/W2358082531","https://openalex.org/W2589976903","https://openalex.org/W1995054232","https://openalex.org/W2156910174","https://openalex.org/W1556709767"],"abstract_inverted_index":{"A":[0,150],"tremendous":[1],"amount":[2],"of":[3,24,223],"information":[4,101],"is":[5,89,148],"being":[6],"shared":[7],"everyday":[8],"on":[9,60,115,160,214,234],"social":[10,76,83,99],"media":[11],"sites":[12],"such":[13],"as":[14,106,226,228],"Facebook,":[15],"Twitter":[16,183],"or":[17],"Google+.":[18],"But":[19],"only":[20],"a":[21,73,75,90,107,142,161,193,215],"small":[22],"portion":[23],"users":[25,197,225],"provide":[26],"their":[27,229],"location":[28,50,57,70,129],"information,":[29,167],"which":[30,54,102],"can":[31,125,152,195],"be":[32,232],"helpful":[33],"in":[34,174],"targeted":[35],"advertisement":[36],"and":[37,78,81,92,122,163,170,187,220],"many":[38],"other":[39,94],"services.":[40],"In":[41],"this":[42],"demo":[43,66,132,147,179],"we":[44],"present":[45],"our":[46],"large":[47],"scale":[48],"user":[49,151,194],"estimation":[51,71,158],"system,":[52],"SPOT,":[53],"showcase":[55],"different":[56,69,121,154],"estimating":[58,211],"models":[59,212],"real":[61,221],"world":[62],"data":[63],"sets.":[64],"The":[65,86,110,131,146,178,218],"shows":[67],"three":[68,138],"algorithms:":[72],"friend-based,":[74],"closeness-based,":[77],"an":[79],"energy":[80],"local":[82],"coefficient":[84],"based.":[85],"first":[87],"algorithm":[88],"baseline":[91],"the":[93,116,157,165,175,210,235],"two":[95,111,181],"new":[96],"algorithms":[97,112,139],"utilize":[98],"closeness":[100],"was":[103],"traditionally":[104],"treated":[105],"binary":[108],"friendship.":[109],"are":[113,120],"based":[114],"premise":[117],"that":[118,136],"friends":[119,124,172,230],"close":[123],"help":[126],"to":[127,207],"estimate":[128],"better.":[130],"will":[133,231],"also":[134],"show":[135],"all":[137],"benefit":[140],"from":[141],"confidence-based":[143],"iteration":[144],"method.":[145],"web-based.":[149],"specify":[153],"settings,":[155],"explore":[156],"results":[159],"map,":[162],"observe":[164],"statistical":[166],"e.g.":[168,201],"accuracy":[169],"average":[171],"used":[173],"estimation,":[176],"dynamically.":[177],"provides":[180],"datasets:":[182],"(148,860":[184],"located":[185,190],"users)":[186],"Gowalla":[188],"(99,563":[189],"users).":[191],"Furthermore,":[192],"filter":[196],"with":[198,202],"certain":[199],"features,":[200],"more":[203],"than":[204],"100":[205],"friends,":[206],"see":[208],"how":[209],"work":[213],"particular":[216],"case.":[217],"estimated":[219],"locations":[222],"those":[224],"well":[227],"displayed":[233],"map.":[236]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":5},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":10},{"year":2018,"cited_by_count":10},{"year":2017,"cited_by_count":7},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":2}],"updated_date":"2026-03-21T08:13:44.787528","created_date":"2016-06-24T00:00:00"}
