{"id":"https://openalex.org/W2912458136","doi":"https://doi.org/10.1109/bigdata.2018.8622376","title":"Hot Spot Analysis over Big Trajectory Data","display_name":"Hot Spot Analysis over Big Trajectory Data","publication_year":2018,"publication_date":"2018-12-01","ids":{"openalex":"https://openalex.org/W2912458136","doi":"https://doi.org/10.1109/bigdata.2018.8622376","mag":"2912458136"},"language":"en","primary_location":{"id":"doi:10.1109/bigdata.2018.8622376","is_oa":false,"landing_page_url":"https://doi.org/10.1109/bigdata.2018.8622376","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE International Conference on Big Data (Big Data)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://zenodo.org/record/2730650","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5035455646","display_name":"Panagiotis Nikitopoulos","orcid":"https://orcid.org/0000-0001-6098-0408"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":true,"raw_author_name":"Panagiotis Nikitopoulos","raw_affiliation_strings":["School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029741904","display_name":"Aris-Iakovos Paraskevopoulos","orcid":null},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Aris-Iakovos Paraskevopoulos","raw_affiliation_strings":["School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033084721","display_name":"Christos Doulkeridis","orcid":"https://orcid.org/0000-0002-3219-0510"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Christos Doulkeridis","raw_affiliation_strings":["School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063577090","display_name":"Nikos Pelekis","orcid":"https://orcid.org/0000-0001-7205-5703"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Nikos Pelekis","raw_affiliation_strings":["School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018268830","display_name":"Yannis Theodoridis","orcid":"https://orcid.org/0000-0003-2589-7881"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Yannis Theodoridis","raw_affiliation_strings":["School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Technologies, University of Piraeus, Piraeus, Greece","institution_ids":["https://openalex.org/I154757721"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5035455646"],"corresponding_institution_ids":["https://openalex.org/I154757721"],"apc_list":null,"apc_paid":null,"fwci":1.9918,"has_fulltext":false,"cited_by_count":22,"citation_normalized_percentile":{"value":0.87898754,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"761","last_page":"770"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11106","display_name":"Data Management and Algorithms","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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":0.9922999739646912,"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/T10757","display_name":"Geographic Information Systems Studies","score":0.9811000227928162,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"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/scalability","display_name":"Scalability","score":0.7776249051094055},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.763404130935669},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.7485313415527344},{"id":"https://openalex.org/keywords/hot-spot","display_name":"Hot spot (computer programming)","score":0.7163705825805664},{"id":"https://openalex.org/keywords/spark","display_name":"SPARK (programming language)","score":0.6667519807815552},{"id":"https://openalex.org/keywords/statistic","display_name":"Statistic","score":0.609092116355896},{"id":"https://openalex.org/keywords/big-data","display_name":"Big data","score":0.5615731477737427},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.521014928817749},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.4990055561065674},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4825298488140106},{"id":"https://openalex.org/keywords/data-set","display_name":"Data set","score":0.47786587476730347},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.31785476207733154},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.19763842225074768},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.16883862018585205},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.13218951225280762},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.12071561813354492}],"concepts":[{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.7776249051094055},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.763404130935669},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7485313415527344},{"id":"https://openalex.org/C199672914","wikidata":"https://www.wikidata.org/wiki/Q4241353","display_name":"Hot spot (computer programming)","level":2,"score":0.7163705825805664},{"id":"https://openalex.org/C2781215313","wikidata":"https://www.wikidata.org/wiki/Q3493345","display_name":"SPARK (programming language)","level":2,"score":0.6667519807815552},{"id":"https://openalex.org/C89128539","wikidata":"https://www.wikidata.org/wiki/Q1949963","display_name":"Statistic","level":2,"score":0.609092116355896},{"id":"https://openalex.org/C75684735","wikidata":"https://www.wikidata.org/wiki/Q858810","display_name":"Big data","level":2,"score":0.5615731477737427},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.521014928817749},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.4990055561065674},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4825298488140106},{"id":"https://openalex.org/C58489278","wikidata":"https://www.wikidata.org/wiki/Q1172284","display_name":"Data set","level":2,"score":0.47786587476730347},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.31785476207733154},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.19763842225074768},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.16883862018585205},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.13218951225280762},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.12071561813354492},{"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/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/bigdata.2018.8622376","is_oa":false,"landing_page_url":"https://doi.org/10.1109/bigdata.2018.8622376","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE International Conference on Big Data (Big Data)","raw_type":"proceedings-article"},{"id":"pmh:oai:zenodo.org:2730650","is_oa":true,"landing_page_url":"https://zenodo.org/record/2730650","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"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":"","raw_type":"info:eu-repo/semantics/conferencePaper"}],"best_oa_location":{"id":"pmh:oai:zenodo.org:2730650","is_oa":true,"landing_page_url":"https://zenodo.org/record/2730650","pdf_url":null,"source":{"id":"https://openalex.org/S4306400562","display_name":"Zenodo (CERN European Organization for Nuclear Research)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I67311998","host_organization_name":"European Organization for Nuclear Research","host_organization_lineage":["https://openalex.org/I67311998"],"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":"","raw_type":"info:eu-repo/semantics/conferencePaper"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":40,"referenced_works":["https://openalex.org/W1466952224","https://openalex.org/W1673310716","https://openalex.org/W1967137980","https://openalex.org/W1981398125","https://openalex.org/W1984272626","https://openalex.org/W2012580531","https://openalex.org/W2047348678","https://openalex.org/W2050925797","https://openalex.org/W2052611179","https://openalex.org/W2060346657","https://openalex.org/W2065303943","https://openalex.org/W2074542373","https://openalex.org/W2097268493","https://openalex.org/W2107252651","https://openalex.org/W2110955486","https://openalex.org/W2126194848","https://openalex.org/W2160642098","https://openalex.org/W2163926517","https://openalex.org/W2203592003","https://openalex.org/W2266931272","https://openalex.org/W2293665576","https://openalex.org/W2294628100","https://openalex.org/W2548613432","https://openalex.org/W2562729256","https://openalex.org/W2583219280","https://openalex.org/W2604511635","https://openalex.org/W2604552094","https://openalex.org/W2604620733","https://openalex.org/W2605122712","https://openalex.org/W2751474462","https://openalex.org/W2751755395","https://openalex.org/W2778188427","https://openalex.org/W4247105055","https://openalex.org/W4292081072","https://openalex.org/W6637131181","https://openalex.org/W6676842161","https://openalex.org/W6684043322","https://openalex.org/W6735656054","https://openalex.org/W6735834699","https://openalex.org/W6746779182"],"related_works":["https://openalex.org/W4390608645","https://openalex.org/W2960264696","https://openalex.org/W3090563135","https://openalex.org/W2497432351","https://openalex.org/W4206777497","https://openalex.org/W2766461310","https://openalex.org/W4247566972","https://openalex.org/W4388692845","https://openalex.org/W3202731209","https://openalex.org/W3211874991"],"abstract_inverted_index":{"Hot":[0],"spot":[1,26,105],"analysis":[2,27,46],"is":[3,89],"the":[4,22,45,72,81,100,108,163,168,173,186,205],"problem":[5,23,101],"of":[6,24,32,47,50,53,95,102,190,201,211],"identifying":[7],"statistically":[8],"significant":[9],"spatial":[10],"clusters":[11],"from":[12],"an":[13,67,125,138],"underlying":[14],"data":[15,31,55,88,133,199],"set.":[16],"In":[17,59,155],"this":[18,119],"paper,":[19],"we":[20,65,98,136,157],"study":[21],"hot":[25,63,104],"for":[28,83,118,149,208],"massive":[29],"trajectory":[30,87,103,198],"moving":[33],"objects,":[34],"which":[35,75,123],"has":[36,76],"many":[37],"real-life":[38,197],"applications":[39],"in":[40,44,80,151,167,170,181,204],"different":[41],"domains,":[42],"especially":[43],"vast":[48],"repositories":[49],"historical":[51],"traces":[52],"spatio-temporal":[54],"(cars,":[56],"vessels,":[57],"aircrafts).":[58],"order":[60],"to":[61],"identify":[62],"spots,":[64],"propose":[66,112],"approach":[68,192],"that":[69,142,161],"relies":[70],"on":[71,131],"Getis-Ord":[73,109],"statistic,":[74],"been":[77],"used":[78],"successfully":[79],"past":[82],"point":[84],"data.":[85],"Since":[86],"more":[90],"than":[91],"just":[92],"a":[93,113,152,159,194,209],"collection":[94],"individual":[96],"points,":[97],"formulate":[99],"analysis,":[106],"using":[107,193],"statistic.":[110],"We":[111,177],"parallel":[114],"and":[115,128,146,184,188],"scalable":[116],"algorithm":[117,140],"problem,":[120],"called":[121],"THS,":[122],"provides":[124],"exact":[126],"solution":[127],"can":[129],"operate":[130],"vast-sized":[132],"sets.":[134],"Moreover,":[135],"introduce":[137],"approximate":[139],"(aTHS)":[141],"avoids":[143],"exhaustive":[144],"computation":[145],"trades-off":[147],"accuracy":[148],"efficiency":[150,189],"controlled":[153],"manner.":[154],"essence,":[156],"provide":[158],"method":[160],"quantifies":[162],"maximum":[164],"induced":[165],"error":[166],"approximation,":[169],"relation":[171],"with":[172],"achieved":[174],"computational":[175],"savings.":[176],"develop":[178],"our":[179,191],"algorithms":[180],"Apache":[182],"Spark":[183],"demonstrate":[185],"scalability":[187],"large,":[195],"historical,":[196],"set":[200],"vessels":[202],"sailing":[203],"Eastern":[206],"Mediterranean":[207],"period":[210],"three":[212],"years.":[213]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":6},{"year":2019,"cited_by_count":1}],"updated_date":"2026-03-29T08:15:47.926485","created_date":"2025-10-10T00:00:00"}