{"id":"https://openalex.org/W7129051170","doi":"https://doi.org/10.1049/cit2.70085","title":"A Temporally Disentangled Contrastive Diffusion Model for Spatiotemporal Imputation","display_name":"A Temporally Disentangled Contrastive Diffusion Model for Spatiotemporal Imputation","publication_year":2026,"publication_date":"2026-02-16","ids":{"openalex":"https://openalex.org/W7129051170","doi":"https://doi.org/10.1049/cit2.70085"},"language":"en","primary_location":{"id":"doi:10.1049/cit2.70085","is_oa":true,"landing_page_url":"https://doi.org/10.1049/cit2.70085","pdf_url":null,"source":{"id":"https://openalex.org/S2898415742","display_name":"CAAI Transactions on Intelligence Technology","issn_l":"2468-2322","issn":["2468-2322","2468-6557"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310311714","host_organization_name":"Institution of Engineering and Technology","host_organization_lineage":["https://openalex.org/P4310311714"],"host_organization_lineage_names":["Institution of Engineering and Technology"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CAAI Transactions on Intelligence Technology","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1049/cit2.70085","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101691881","display_name":"Yakun Chen","orcid":"https://orcid.org/0000-0002-8331-3410"},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]},{"id":"https://openalex.org/I4210086892","display_name":"Education University of Hong Kong","ror":"https://ror.org/000t0f062","country_code":"HK","type":"education","lineage":["https://openalex.org/I4210086892"]}],"countries":["AU","HK"],"is_corresponding":false,"raw_author_name":"Yakun Chen","raw_affiliation_strings":["Centre for Learning, Teaching and Technology The Education University of Hong Kong  Hong Kong China","School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia"],"raw_orcid":"https://orcid.org/0000-0002-8331-3410","affiliations":[{"raw_affiliation_string":"Centre for Learning, Teaching and Technology The Education University of Hong Kong  Hong Kong China","institution_ids":["https://openalex.org/I4210086892"]},{"raw_affiliation_string":"School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","institution_ids":["https://openalex.org/I114017466"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034376285","display_name":"Kaize Shi","orcid":"https://orcid.org/0000-0003-3561-3627"},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]},{"id":"https://openalex.org/I185523456","display_name":"University of Southern Queensland","ror":"https://ror.org/04sjbnx57","country_code":"AU","type":"education","lineage":["https://openalex.org/I185523456"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Kaize Shi","raw_affiliation_strings":["School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","School of Mathematics, Physics and Computing University of Southern Queensland  Brisbane Queensland Australia"],"raw_orcid":"https://orcid.org/0000-0003-3561-3627","affiliations":[{"raw_affiliation_string":"School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","institution_ids":["https://openalex.org/I114017466"]},{"raw_affiliation_string":"School of Mathematics, Physics and Computing University of Southern Queensland  Brisbane Queensland Australia","institution_ids":["https://openalex.org/I185523456"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036594859","display_name":"Zhangkai Wu","orcid":"https://orcid.org/0000-0001-5494-0768"},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Zhangkai Wu","raw_affiliation_strings":["School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","institution_ids":["https://openalex.org/I114017466"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126146731","display_name":"Juan Chen","orcid":null},"institutions":[{"id":"https://openalex.org/I4210124476","display_name":"Sophos Group (United Kingdom)","ror":"https://ror.org/0368h0402","country_code":"GB","type":"company","lineage":["https://openalex.org/I4210124476"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Juan Chen","raw_affiliation_strings":["Sophos Ltd  Sydney New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Sophos Ltd  Sydney New South Wales Australia","institution_ids":["https://openalex.org/I4210124476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059824794","display_name":"XIANZHI WANG","orcid":null},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Xianzhi Wang","raw_affiliation_strings":["School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia"],"raw_orcid":"https://orcid.org/0000-0001-9582-3445","affiliations":[{"raw_affiliation_string":"School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","institution_ids":["https://openalex.org/I114017466"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Julian McAuley","orcid":null},"institutions":[{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Julian McAuley","raw_affiliation_strings":["Department of Computer Science and Engineering University of California San Diego  La Jolla California USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science and Engineering University of California San Diego  La Jolla California USA","institution_ids":["https://openalex.org/I36258959"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126112030","display_name":"Guandong Xu","orcid":null},"institutions":[{"id":"https://openalex.org/I4210086892","display_name":"Education University of Hong Kong","ror":"https://ror.org/000t0f062","country_code":"HK","type":"education","lineage":["https://openalex.org/I4210086892"]}],"countries":["HK"],"is_corresponding":true,"raw_author_name":"Guandong Xu","raw_affiliation_strings":["Centre for Learning, Teaching and Technology The Education University of Hong Kong  Hong Kong China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centre for Learning, Teaching and Technology The Education University of Hong Kong  Hong Kong China","institution_ids":["https://openalex.org/I4210086892"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100989524","display_name":"Shui Yu","orcid":null},"institutions":[{"id":"https://openalex.org/I114017466","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041","country_code":"AU","type":"education","lineage":["https://openalex.org/I114017466"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Shui Yu","raw_affiliation_strings":["School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science University of Technology Sydney  Ultimo New South Wales Australia","institution_ids":["https://openalex.org/I114017466"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5126112030"],"corresponding_institution_ids":["https://openalex.org/I4210086892"],"apc_list":{"value":2200,"currency":"USD","value_usd":2200},"apc_paid":{"value":2200,"currency":"USD","value_usd":2200},"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.14648835,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"11","issue":"2","first_page":"548","last_page":"563"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.1468999981880188,"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"}},"topics":[{"id":"https://openalex.org/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.1468999981880188,"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/T10241","display_name":"Functional Brain Connectivity Studies","score":0.07479999959468842,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11911","display_name":"Spatial and Panel Data Analysis","score":0.03840000182390213,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/probabilistic-logic","display_name":"Probabilistic logic","score":0.6184999942779541},{"id":"https://openalex.org/keywords/missing-data","display_name":"Missing data","score":0.5181999802589417},{"id":"https://openalex.org/keywords/imputation","display_name":"Imputation (statistics)","score":0.5163000226020813},{"id":"https://openalex.org/keywords/statistical-model","display_name":"Statistical model","score":0.4609000086784363},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.4584999978542328},{"id":"https://openalex.org/keywords/data-modeling","display_name":"Data modeling","score":0.299699991941452},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.2978000044822693}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6438000202178955},{"id":"https://openalex.org/C49937458","wikidata":"https://www.wikidata.org/wiki/Q2599292","display_name":"Probabilistic logic","level":2,"score":0.6184999942779541},{"id":"https://openalex.org/C9357733","wikidata":"https://www.wikidata.org/wiki/Q6878417","display_name":"Missing data","level":2,"score":0.5181999802589417},{"id":"https://openalex.org/C58041806","wikidata":"https://www.wikidata.org/wiki/Q1660484","display_name":"Imputation (statistics)","level":3,"score":0.5163000226020813},{"id":"https://openalex.org/C114289077","wikidata":"https://www.wikidata.org/wiki/Q3284399","display_name":"Statistical model","level":2,"score":0.4609000086784363},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.4584999978542328},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.45590001344680786},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4453999996185303},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.414900004863739},{"id":"https://openalex.org/C67186912","wikidata":"https://www.wikidata.org/wiki/Q367664","display_name":"Data modeling","level":2,"score":0.299699991941452},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.2978000044822693},{"id":"https://openalex.org/C152565575","wikidata":"https://www.wikidata.org/wiki/Q1124538","display_name":"Conditional random field","level":2,"score":0.2937000095844269},{"id":"https://openalex.org/C140779682","wikidata":"https://www.wikidata.org/wiki/Q210868","display_name":"Sampling (signal processing)","level":3,"score":0.2906000018119812},{"id":"https://openalex.org/C59404180","wikidata":"https://www.wikidata.org/wiki/Q17013334","display_name":"Feature learning","level":2,"score":0.28850001096725464},{"id":"https://openalex.org/C45942800","wikidata":"https://www.wikidata.org/wiki/Q245652","display_name":"Ensemble learning","level":2,"score":0.2678999900817871},{"id":"https://openalex.org/C44492722","wikidata":"https://www.wikidata.org/wiki/Q327069","display_name":"Conditional probability","level":2,"score":0.26570001244544983},{"id":"https://openalex.org/C52740198","wikidata":"https://www.wikidata.org/wiki/Q1539564","display_name":"Importance sampling","level":3,"score":0.26350000500679016},{"id":"https://openalex.org/C33954974","wikidata":"https://www.wikidata.org/wiki/Q486494","display_name":"Sensor fusion","level":2,"score":0.25839999318122864},{"id":"https://openalex.org/C116409475","wikidata":"https://www.wikidata.org/wiki/Q1385056","display_name":"External Data Representation","level":2,"score":0.2506999969482422}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1049/cit2.70085","is_oa":true,"landing_page_url":"https://doi.org/10.1049/cit2.70085","pdf_url":null,"source":{"id":"https://openalex.org/S2898415742","display_name":"CAAI Transactions on Intelligence Technology","issn_l":"2468-2322","issn":["2468-2322","2468-6557"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310311714","host_organization_name":"Institution of Engineering and Technology","host_organization_lineage":["https://openalex.org/P4310311714"],"host_organization_lineage_names":["Institution of Engineering and Technology"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CAAI Transactions on Intelligence Technology","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:2289235288b0448c8912a563a988a1f3","is_oa":true,"landing_page_url":"https://doaj.org/article/2289235288b0448c8912a563a988a1f3","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"CAAI Transactions on Intelligence Technology, Vol 11, Iss 2, Pp 548-563 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1049/cit2.70085","is_oa":true,"landing_page_url":"https://doi.org/10.1049/cit2.70085","pdf_url":null,"source":{"id":"https://openalex.org/S2898415742","display_name":"CAAI Transactions on Intelligence Technology","issn_l":"2468-2322","issn":["2468-2322","2468-6557"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310311714","host_organization_name":"Institution of Engineering and Technology","host_organization_lineage":["https://openalex.org/P4310311714"],"host_organization_lineage_names":["Institution of Engineering and Technology"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"CAAI Transactions on Intelligence Technology","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Peace, Justice and strong institutions","score":0.4527420699596405,"id":"https://metadata.un.org/sdg/16"}],"awards":[{"id":"https://openalex.org/G6537946155","display_name":"Contextual Behabiour Predictions in Dynamic Mobile E-commerce","funder_award_id":"DP220103717","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"},{"id":"https://openalex.org/G8813947113","display_name":"A Secure Smart Sensing and Industry Analytics Facility for Industry 4.0","funder_award_id":"LE220100078","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"}],"funders":[{"id":"https://openalex.org/F4320334704","display_name":"Australian Research Council","ror":"https://ror.org/05mmh0f86"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W172222775","https://openalex.org/W1789155650","https://openalex.org/W2025720061","https://openalex.org/W2112738128","https://openalex.org/W2134843796","https://openalex.org/W2787894218","https://openalex.org/W2944102862","https://openalex.org/W2972862002","https://openalex.org/W3001790167","https://openalex.org/W3031381838","https://openalex.org/W3034944009","https://openalex.org/W3134794314","https://openalex.org/W3155567600","https://openalex.org/W4220947551","https://openalex.org/W4367057034","https://openalex.org/W4387387521","https://openalex.org/W4388348965","https://openalex.org/W4388349083","https://openalex.org/W4392796768","https://openalex.org/W4393253042","https://openalex.org/W4393972734","https://openalex.org/W4394699135","https://openalex.org/W4394862809","https://openalex.org/W4401863578","https://openalex.org/W4402386891","https://openalex.org/W4412434916","https://openalex.org/W4414360835"],"related_works":[],"abstract_inverted_index":{"ABSTRACT":[0],"The":[1],"analysis":[2],"of":[3,38,81,102,176],"spatiotemporal":[4,141],"data":[5,78,177],"is":[6,114],"essential":[7],"across":[8],"many":[9],"fields,":[10],"such":[11],"as":[12,150],"transportation,":[13],"meteorology":[14],"and":[15,30,49,100,119,134,183],"healthcare.":[16],"Data":[17],"gathered":[18],"in":[19,140],"practical":[20],"applications":[21],"often":[22],"suffer":[23],"from":[24,75],"incompleteness":[25],"due":[26],"to":[27,137,153,169,201],"device":[28],"failures":[29],"network":[31],"disruptions.":[32],"Spatiotemporal":[33],"imputation":[34],"targets":[35],"the":[36,97,144,155,161,174],"estimation":[37],"missing":[39,178],"observations":[40],"by":[41,72],"exploiting":[42],"intrinsic":[43,112],"spatial\u2013temporal":[44],"dependencies.":[45],"Although":[46],"traditional":[47],"statistical":[48],"machine\u2010learning":[50],"methods":[51],"depend":[52],"on":[53,185],"restrictive":[54],"distributional":[55],"assumptions,":[56],"graph\u2010":[57],"or":[58,106],"recurrent\u2010based":[59],"models":[60,68],"accumulate":[61],"errors":[62],"through":[63],"iterative":[64],"propagation.":[65],"Diffusion":[66],"probabilistic":[67],"mitigate":[69],"these":[70],"issues":[71],"sampling":[73],"directly":[74],"a":[76,125,165],"learnt":[77,186],"prior":[79],"instead":[80],"recycling":[82],"past":[83],"imputations.":[84],"However,":[85],"existing":[86],"conditional":[87,126,151],"diffusion":[88,127],"variants":[89],"still":[90],"converge":[91],"towards":[92],"overly":[93],"similar":[94],"reconstructions,":[95],"obscuring":[96],"genuine":[98],"uncertainty":[99],"heterogeneity":[101],"real\u2010world":[103,194],"traffic,":[104],"environmental":[105],"clinical":[107],"streams.":[108],"Preserving\u2014and":[109],"faithfully":[110],"quantifying\u2014this":[111],"diversity":[113],"crucial":[115],"for":[116],"reliable":[117],"forecasting":[118],"downstream":[120],"decision\u2010making.":[121],"We":[122,158],"propose":[123],"TSD,":[124],"framework":[128],"that":[129],"integrates":[130],"disentangled":[131,147],"temporal":[132,148],"representations":[133,149],"contrastive":[135,166],"learning":[136,167],"improve":[138,170],"generalisability":[139],"imputation.":[142],"Specifically,":[143],"approach":[145],"uses":[146],"information":[152],"guide":[154],"reverse":[156],"process.":[157],"also":[159],"enhance":[160],"final":[162],"loss":[163],"using":[164,191],"strategy":[168],"representation":[171],"quality,":[172],"mitigating":[173],"impact":[175],"completely":[179],"at":[180],"random":[181],"(MCAR)":[182],"noise":[184],"features.":[187],"Through":[188],"comprehensive":[189],"experiments":[190],"three":[192],"distinct":[193],"datasets,":[195],"TSD":[196],"has":[197],"competitive":[198],"results":[199],"compared":[200],"leading\u2010edge":[202],"baselines.":[203]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-06-15T08:34:33.830935","created_date":"2026-02-17T00:00:00"}
