{"id":"https://openalex.org/W2005701847","doi":"https://doi.org/10.1145/2592784.2592787","title":"Compressing large scale urban trajectory data","display_name":"Compressing large scale urban trajectory data","publication_year":2014,"publication_date":"2014-04-11","ids":{"openalex":"https://openalex.org/W2005701847","doi":"https://doi.org/10.1145/2592784.2592787","mag":"2005701847"},"language":"en","primary_location":{"id":"doi:10.1145/2592784.2592787","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2592784.2592787","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Fourth International Workshop on Cloud Data and Platforms","raw_type":"proceedings-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/A5035230195","display_name":"Kuien Liu","orcid":null},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"funder","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210128818","display_name":"Institute of Software","ror":"https://ror.org/033dfsn42","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210128818"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Kuien Liu","raw_affiliation_strings":["Institute of Software, The Chinese Academy of Sciences, Beijing, China","Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210128818","https://openalex.org/I19820366"]},{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#","institution_ids":["https://openalex.org/I19820366"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027731521","display_name":"Yaguang Li","orcid":"https://orcid.org/0000-0001-9218-0990"},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"funder","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210128818","display_name":"Institute of Software","ror":"https://ror.org/033dfsn42","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210128818"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yaguang Li","raw_affiliation_strings":["Institute of Software, The Chinese Academy of Sciences, Beijing, China","Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210128818","https://openalex.org/I19820366"]},{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#","institution_ids":["https://openalex.org/I19820366"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101891868","display_name":"Jian Dai","orcid":null},"institutions":[{"id":"https://openalex.org/I4210128818","display_name":"Institute of Software","ror":"https://ror.org/033dfsn42","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210128818"]},{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"funder","lineage":["https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jian Dai","raw_affiliation_strings":["Institute of Software, The Chinese Academy of Sciences, Beijing, China","Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#"],"affiliations":[{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210128818","https://openalex.org/I19820366"]},{"raw_affiliation_string":"Institute of Software, The Chinese Academy of Sciences, Beijing, China#TAB#","institution_ids":["https://openalex.org/I19820366"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102754146","display_name":"Shuo Shang","orcid":"https://orcid.org/0000-0002-1117-2890"},"institutions":[{"id":"https://openalex.org/I204553293","display_name":"China University of Petroleum, Beijing","ror":"https://ror.org/041qf4r12","country_code":"CN","type":"education","lineage":["https://openalex.org/I204553293"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuo Shang","raw_affiliation_strings":["China University of Petroleum, Beijing, China","China University of Petroleum., Beijing, China"],"affiliations":[{"raw_affiliation_string":"China University of Petroleum, Beijing, China","institution_ids":["https://openalex.org/I204553293"]},{"raw_affiliation_string":"China University of Petroleum., Beijing, China","institution_ids":["https://openalex.org/I204553293"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101619839","display_name":"Kai Zheng","orcid":"https://orcid.org/0000-0003-1996-1699"},"institutions":[{"id":"https://openalex.org/I165143802","display_name":"University of Queensland","ror":"https://ror.org/00rqy9422","country_code":"AU","type":"education","lineage":["https://openalex.org/I165143802"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Kai Zheng","raw_affiliation_strings":["The University of Queensland, Brisbane QLD, Australia","The University of Queensland, Brisbane, Qld, Australia#TAB#"],"affiliations":[{"raw_affiliation_string":"The University of Queensland, Brisbane QLD, Australia","institution_ids":["https://openalex.org/I165143802"]},{"raw_affiliation_string":"The University of Queensland, Brisbane, Qld, Australia#TAB#","institution_ids":["https://openalex.org/I165143802"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5035230195"],"corresponding_institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210128818"],"apc_list":null,"apc_paid":null,"fwci":1.4712,"has_fulltext":false,"cited_by_count":25,"citation_normalized_percentile":{"value":0.81897486,"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":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9997000098228455,"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":0.9997000098228455,"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/T11269","display_name":"Algorithms and Data Compression","score":0.9948999881744385,"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"}},{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9872000217437744,"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/computer-science","display_name":"Computer science","score":0.7995278835296631},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.7740252017974854},{"id":"https://openalex.org/keywords/data-compression","display_name":"Data compression","score":0.5741163492202759},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.5615404844284058},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.5260446071624756},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.4946613013744354},{"id":"https://openalex.org/keywords/scale","display_name":"Scale (ratio)","score":0.48182788491249084},{"id":"https://openalex.org/keywords/encoding","display_name":"Encoding (memory)","score":0.4754445552825928},{"id":"https://openalex.org/keywords/redundancy","display_name":"Redundancy (engineering)","score":0.47242915630340576},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4576728343963623},{"id":"https://openalex.org/keywords/exploit","display_name":"Exploit","score":0.4513227343559265},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.4502255320549011},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.36898285150527954},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.33789190649986267},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.12403863668441772}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7995278835296631},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7740252017974854},{"id":"https://openalex.org/C78548338","wikidata":"https://www.wikidata.org/wiki/Q2493","display_name":"Data compression","level":2,"score":0.5741163492202759},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.5615404844284058},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.5260446071624756},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.4946613013744354},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.48182788491249084},{"id":"https://openalex.org/C125411270","wikidata":"https://www.wikidata.org/wiki/Q18653","display_name":"Encoding (memory)","level":2,"score":0.4754445552825928},{"id":"https://openalex.org/C152124472","wikidata":"https://www.wikidata.org/wiki/Q1204361","display_name":"Redundancy (engineering)","level":2,"score":0.47242915630340576},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4576728343963623},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.4513227343559265},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.4502255320549011},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.36898285150527954},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.33789190649986267},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.12403863668441772},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"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/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"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/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/2592784.2592787","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2592784.2592787","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the Fourth International Workshop on Cloud Data and Platforms","raw_type":"proceedings-article"},{"id":"pmh:oai:espace.library.uq.edu.au:UQ:330523","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":{"id":"https://openalex.org/S4306402388","display_name":"Queensland's institutional digital repository (The University of Queensland)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I165143802","host_organization_name":"The University of Queensland","host_organization_lineage":["https://openalex.org/I165143802"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8399999737739563,"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11"}],"awards":[{"id":"https://openalex.org/G5366633703","display_name":null,"funder_award_id":"61202064","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6216656654","display_name":null,"funder_award_id":"XDA06010600","funder_id":"https://openalex.org/F4320321133","funder_display_name":"Chinese Academy of Sciences"},{"id":"https://openalex.org/G955853928","display_name":null,"funder_award_id":"2013AA01A603","funder_id":"https://openalex.org/F4320321540","funder_display_name":"Ministry of Science and Technology of the People's Republic of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321133","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35"},{"id":"https://openalex.org/F4320321540","display_name":"Ministry of Science and Technology of the People's Republic of China","ror":"https://ror.org/027s68j25"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W578585133","https://openalex.org/W1485663713","https://openalex.org/W1561688952","https://openalex.org/W1600482701","https://openalex.org/W1973355601","https://openalex.org/W1981934656","https://openalex.org/W1993819379","https://openalex.org/W1993855803","https://openalex.org/W1995487411","https://openalex.org/W2069525402","https://openalex.org/W2077386495","https://openalex.org/W2085983289","https://openalex.org/W2086020653","https://openalex.org/W2092363488","https://openalex.org/W2107252651","https://openalex.org/W2118770664","https://openalex.org/W2130723359","https://openalex.org/W2138044257","https://openalex.org/W2147628959","https://openalex.org/W2153249319","https://openalex.org/W2155239911","https://openalex.org/W2156703312"],"related_works":["https://openalex.org/W17155033","https://openalex.org/W2368824897","https://openalex.org/W1508050556","https://openalex.org/W1910862367","https://openalex.org/W2379365082","https://openalex.org/W2370747590","https://openalex.org/W2030109976","https://openalex.org/W2369260257","https://openalex.org/W2389120450","https://openalex.org/W55249799"],"abstract_inverted_index":{"With":[0],"the":[1,23,56,134,151,176,189,196,212,225,230],"increasing":[2],"size":[3],"of":[4,47,78,102,122,198,214,229],"trajectory":[5,38,107,118,152,199,222],"data":[6,153,200],"generated":[7],"by":[8,50,86,132,184],"location-based":[9],"services":[10],"and":[11,63,80,115,171,179,210,227],"applications":[12],"which":[13,82],"are":[14,83],"built":[15],"from":[16,109,154],"inexpensive":[17],"GPS-enabled":[18],"devices":[19],"in":[20,72,125,144,201],"urban":[21,37,57,69],"environments,":[22],"need":[24],"for":[25],"compressing":[26,215],"large":[27,100],"scale":[28],"trajectories":[29,48],"becomes":[30],"obvious.":[31],"This":[32],"paper":[33],"proposes":[34],"a":[35,45,99,120,186],"scalable":[36],"compression":[39,131,139,182,208],"scheme":[40],"(SUTC)":[41],"that":[42,68],"can":[43],"compress":[44],"set":[46,101],"collectively":[49],"exploiting":[51],"common":[52],"movement":[53],"behaviors":[54,74],"among":[55],"moving":[58,71,84],"objects":[59,70],"such":[60],"as":[61],"vehicles":[62],"smartphone":[64],"users.":[65],"SUTC":[66,104,129],"exploits":[67],"similar":[73],"naturally,":[75],"especially":[76],"large-scale":[77,221],"human":[79],"vehicle":[81],"constrained":[85],"some":[87],"geographic":[88],"context":[89],"(e.g.,":[90],"road":[91],"networks":[92],"or":[93],"routes).":[94],"To":[95],"exploit":[96],"redundancy":[97],"across":[98],"trajectories,":[103],"first":[105],"transforms":[106],"sequences":[108,136,178],"Euclidean":[110],"space":[111,114],"to":[112,149,157,174,203,206],"network-constrained":[113],"represents":[116],"each":[117],"with":[119,137],"sequence":[121],"symbolic":[123,135],"positions":[124],"textual":[126,158],"domain.":[127],"Then,":[128],"performs":[130],"encoding":[133],"general-purpose":[138],"methods.":[140],"The":[141],"key":[142],"challenge":[143],"this":[145],"process":[146],"is":[147],"how":[148],"transform":[150],"spatio-temporal":[155],"domain":[156,159],"without":[160],"introducing":[161],"unbounded":[162],"error.":[163],"We":[164],"develop":[165],"two":[166],"strategies":[167],"(i.e.,":[168],"velocity-based":[169],"symbolization,":[170],"beacon-based":[172],"symbolization)":[173],"enrich":[175],"symbol":[177],"achieves":[180],"high":[181],"ratios":[183],"sacrificing":[185],"little":[187],"bit":[188],"decoding":[190],"accuracy.":[191],"Besides,":[192],"we":[193],"also":[194],"optimize":[195],"organization":[197],"order":[202],"adapt":[204],"it":[205],"practical":[207],"algorithms,":[209],"increase":[211],"efficiency":[213],"processes.":[216],"Our":[217],"experiments":[218],"on":[219],"real":[220],"datasets":[223],"demonstrate":[224],"superiority":[226],"feasibility":[228],"our":[231],"proposed":[232],"algorithms.":[233]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":7},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}
