{"id":"https://openalex.org/W4405828062","doi":"https://doi.org/10.1631/fitee.2300647","title":"Toward an accurate mobility trajectory recovery using contrastive learning","display_name":"Toward an accurate mobility trajectory recovery using contrastive learning","publication_year":2024,"publication_date":"2024-11-01","ids":{"openalex":"https://openalex.org/W4405828062","doi":"https://doi.org/10.1631/fitee.2300647"},"language":"en","primary_location":{"id":"doi:10.1631/fitee.2300647","is_oa":false,"landing_page_url":"https://doi.org/10.1631/fitee.2300647","pdf_url":null,"source":{"id":"https://openalex.org/S4210189857","display_name":"Frontiers of Information Technology & Electronic Engineering","issn_l":"2095-9184","issn":["2095-9184","2095-9230"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers of Information Technology & Electronic Engineering","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://research.aalto.fi/en/publications/984b63e6-9b6c-465e-b541-253275ebbc4b","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100670240","display_name":"Yushan Liu","orcid":"https://orcid.org/0009-0009-7607-3306"},"institutions":[{"id":"https://openalex.org/I24943067","display_name":"Fudan University","ror":"https://ror.org/013q1eq08","country_code":"CN","type":"education","lineage":["https://openalex.org/I24943067"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yushan Liu","raw_affiliation_strings":["Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China","institution_ids":["https://openalex.org/I24943067"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100350503","display_name":"Yang Chen","orcid":"https://orcid.org/0000-0003-4749-3060"},"institutions":[{"id":"https://openalex.org/I24943067","display_name":"Fudan University","ror":"https://ror.org/013q1eq08","country_code":"CN","type":"education","lineage":["https://openalex.org/I24943067"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Yang Chen","raw_affiliation_strings":["Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China"],"raw_orcid":"https://orcid.org/0000-0003-4749-3060","affiliations":[{"raw_affiliation_string":"Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China","institution_ids":["https://openalex.org/I24943067"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037854753","display_name":"Jiayun Zhang","orcid":"https://orcid.org/0000-0002-3562-5794"},"institutions":[{"id":"https://openalex.org/I24943067","display_name":"Fudan University","ror":"https://ror.org/013q1eq08","country_code":"CN","type":"education","lineage":["https://openalex.org/I24943067"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiayun Zhang","raw_affiliation_strings":["Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China","institution_ids":["https://openalex.org/I24943067"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069437467","display_name":"Yu Xiao","orcid":"https://orcid.org/0000-0002-4517-3779"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Yu Xiao","raw_affiliation_strings":["Department of Information and Communications Engineering, Aalto University, Espoo, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information and Communications Engineering, Aalto University, Espoo, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073080405","display_name":"Xin Wang","orcid":"https://orcid.org/0009-0008-0923-8433"},"institutions":[{"id":"https://openalex.org/I24943067","display_name":"Fudan University","ror":"https://ror.org/013q1eq08","country_code":"CN","type":"education","lineage":["https://openalex.org/I24943067"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xin Wang","raw_affiliation_strings":["Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Shanghai Key Lab of Intelligent Information Processing, School of Computer Science, Fudan University, Shanghai, China","institution_ids":["https://openalex.org/I24943067"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5100350503"],"corresponding_institution_ids":["https://openalex.org/I24943067"],"apc_list":null,"apc_paid":null,"fwci":0.5495,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.7829848,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"25","issue":"11","first_page":"1479","last_page":"1496"},"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":0.9998000264167786,"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":0.9998000264167786,"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/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/2215","display_name":"Building and Construction"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9968000054359436,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.6917400360107422},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5351278185844421},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.37378519773483276},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.0954032838344574}],"concepts":[{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.6917400360107422},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5351278185844421},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.37378519773483276},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0954032838344574},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1631/fitee.2300647","is_oa":false,"landing_page_url":"https://doi.org/10.1631/fitee.2300647","pdf_url":null,"source":{"id":"https://openalex.org/S4210189857","display_name":"Frontiers of Information Technology & Electronic Engineering","issn_l":"2095-9184","issn":["2095-9184","2095-9230"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers of Information Technology & Electronic Engineering","raw_type":"journal-article"},{"id":"pmh:oai:aaltodoc.aalto.fi:123456789/132996","is_oa":true,"landing_page_url":"https://research.aalto.fi/en/publications/984b63e6-9b6c-465e-b541-253275ebbc4b","pdf_url":null,"source":{"id":"https://openalex.org/S4306401663","display_name":"Aaltodoc (Aalto University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I9927081","host_organization_name":"Aalto University","host_organization_lineage":["https://openalex.org/I9927081"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"pmh:oai:aaltodoc.aalto.fi:123456789/132996","is_oa":true,"landing_page_url":"https://research.aalto.fi/en/publications/984b63e6-9b6c-465e-b541-253275ebbc4b","pdf_url":null,"source":{"id":"https://openalex.org/S4306401663","display_name":"Aaltodoc (Aalto University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I9927081","host_organization_name":"Aalto University","host_organization_lineage":["https://openalex.org/I9927081"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":47,"referenced_works":["https://openalex.org/W1626398438","https://openalex.org/W1924770834","https://openalex.org/W2020641160","https://openalex.org/W2071702404","https://openalex.org/W2095702309","https://openalex.org/W2110953678","https://openalex.org/W2136317921","https://openalex.org/W2140251882","https://openalex.org/W2141596757","https://openalex.org/W2338697662","https://openalex.org/W2353778398","https://openalex.org/W2539781657","https://openalex.org/W2566401006","https://openalex.org/W2788114581","https://openalex.org/W2795016801","https://openalex.org/W2897079037","https://openalex.org/W2899457523","https://openalex.org/W2979820005","https://openalex.org/W2996806032","https://openalex.org/W3032453802","https://openalex.org/W3035524453","https://openalex.org/W3101707147","https://openalex.org/W3169134134","https://openalex.org/W3171007011","https://openalex.org/W3173650575","https://openalex.org/W3175833479","https://openalex.org/W3197877679","https://openalex.org/W3200255865","https://openalex.org/W3209933526","https://openalex.org/W3217176841","https://openalex.org/W4232197496","https://openalex.org/W4284668299","https://openalex.org/W4285827226","https://openalex.org/W4290943551","https://openalex.org/W4290943894","https://openalex.org/W4296946176","https://openalex.org/W4306317480","https://openalex.org/W4309651756","https://openalex.org/W4319585910","https://openalex.org/W4320060454","https://openalex.org/W4385061950","https://openalex.org/W4385768024","https://openalex.org/W6600175266","https://openalex.org/W6601630192","https://openalex.org/W6601939488","https://openalex.org/W6604896550","https://openalex.org/W7070499600"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W4323768008"],"abstract_inverted_index":{"Human":[0],"mobility":[1,72,125,144],"trajectories":[2,53,69],"are":[3,94],"fundamental":[4],"resources":[5],"for":[6,61,85,115],"analyzing":[7],"mobile":[8,35],"behaviors":[9],"in":[10,28,51,130,152,199],"urban":[11],"computing":[12],"applications.":[13],"However,":[14],"these":[15,52],"trajectories,":[16],"typically":[17],"collected":[18],"from":[19,24,74],"location-based":[20],"services,":[21],"often":[22],"suffer":[23],"sparsity":[25],"and":[26,82,127,142,162],"irregularity":[27],"time.":[29],"To":[30],"support":[31],"the":[32,97,102,177,180],"development":[33],"of":[34,47,101,179,201],"applications,":[36],"there":[37],"is":[38],"a":[39,55,118,135,159,170],"need":[40],"to":[41,79,96,122,175],"recover":[42],"or":[43,70],"estimate":[44],"missing":[45],"locations":[46],"unobserved":[48],"time":[49],"slots":[50],"at":[54],"fine-grained":[56],"spatial-temporal":[57],"resolution.":[58],"Existing":[59],"methods":[60,93,198],"trajectory":[62,87,104,131,161,202],"recovery":[63,88,203],"rely":[64],"on":[65,185],"either":[66],"individual":[67,81,143],"user":[68,165],"collective":[71,83,141],"patterns":[73,84,126,157],"all":[75],"users.":[76],"The":[77,146],"potential":[78],"combine":[80],"precise":[86],"remains":[89],"unexplored.":[90],"Additionally,":[91],"current":[92],"sensitive":[95],"heterogeneous":[98],"temporal":[99],"distributions":[100],"observable":[103],"segments.":[105],"In":[106],"this":[107],"paper,":[108],"we":[109],"propose":[110],"CLMove":[111,133,153,193],"(where":[112],"CL":[113],"stands":[114],"contrastive":[116,172],"learning),":[117],"novel":[119],"model":[120,194],"designed":[121],"capture":[123],"multilevel":[124],"enhance":[128],"robustness":[129,178],"recovery.":[132],"features":[134],"two-stage":[136],"location":[137,155],"encoder":[138],"that":[139,191],"captures":[140],"patterns.":[145],"graph":[147],"neural":[148],"network":[149],"based":[150],"networks":[151],"explore":[154],"transition":[156],"within":[158],"single":[160],"across":[163],"various":[164],"trajectories.":[166],"We":[167],"also":[168],"design":[169],"trajectory-level":[171],"learning":[173],"task":[174],"improve":[176],"model.":[181],"Extensive":[182],"experimental":[183],"results":[184],"three":[186],"representative":[187],"real-world":[188],"datasets":[189],"demonstrate":[190],"our":[192],"consistently":[195],"outperforms":[196],"state-of-the-art":[197],"terms":[200],"accuracy.":[204]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-06-13T06:13:01.061226","created_date":"2025-10-10T00:00:00"}