{"id":"https://openalex.org/W2136383351","doi":"https://doi.org/10.1109/itsc.2008.4732598","title":"Obtaining Dense Road Speed Estimates from Sparse GPS Measurements","display_name":"Obtaining Dense Road Speed Estimates from Sparse GPS Measurements","publication_year":2008,"publication_date":"2008-10-01","ids":{"openalex":"https://openalex.org/W2136383351","doi":"https://doi.org/10.1109/itsc.2008.4732598","mag":"2136383351"},"language":"en","primary_location":{"id":"doi:10.1109/itsc.2008.4732598","is_oa":false,"landing_page_url":"https://doi.org/10.1109/itsc.2008.4732598","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 11th International IEEE Conference on Intelligent Transportation Systems","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://escholarship.mcgill.ca/downloads/f7623f43t","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5043618767","display_name":"Andrew Phan","orcid":null},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Andrew Phan","raw_affiliation_strings":["Center for Intelligent Machines, Department of Electrical and Computer Engineering, McGill University, Canada","[Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Intelligent Machines, Department of Electrical and Computer Engineering, McGill University, Canada","institution_ids":["https://openalex.org/I5023651"]},{"raw_affiliation_string":"[Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC]","institution_ids":["https://openalex.org/I5023651"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109219829","display_name":"Frank P. Ferrie","orcid":null},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Frank Ferrie","raw_affiliation_strings":["Center for Intelligent Machines, Department of Electrical and Computer Engineering, McGill University, Canada","[Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Intelligent Machines, Department of Electrical and Computer Engineering, McGill University, Canada","institution_ids":["https://openalex.org/I5023651"]},{"raw_affiliation_string":"[Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC]","institution_ids":["https://openalex.org/I5023651"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I5023651"],"apc_list":null,"apc_paid":null,"fwci":1.5376,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.8000731,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"32","issue":null,"first_page":"157","last_page":"162"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.9998999834060669,"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":0.9998999834060669,"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/T13282","display_name":"Automated Road and Building Extraction","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean Engineering"},"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/T11106","display_name":"Data Management and Algorithms","score":0.9957000017166138,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.7837496995925903},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7216445803642273},{"id":"https://openalex.org/keywords/floating-car-data","display_name":"Floating car data","score":0.6625811457633972},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.5451265573501587},{"id":"https://openalex.org/keywords/inference","display_name":"Inference","score":0.5407947897911072},{"id":"https://openalex.org/keywords/reliability","display_name":"Reliability (semiconductor)","score":0.5261126160621643},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.48165571689605713},{"id":"https://openalex.org/keywords/traffic-congestion","display_name":"Traffic congestion","score":0.46685391664505005},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.45754098892211914},{"id":"https://openalex.org/keywords/flow-network","display_name":"Flow network","score":0.45706287026405334},{"id":"https://openalex.org/keywords/traffic-flow","display_name":"Traffic flow (computer networking)","score":0.4484805166721344},{"id":"https://openalex.org/keywords/traffic-speed","display_name":"Traffic speed","score":0.42237621545791626},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.36108946800231934},{"id":"https://openalex.org/keywords/transport-engineering","display_name":"Transport engineering","score":0.30589979887008667},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.26242774724960327},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.24210938811302185},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.15098866820335388},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.13347738981246948},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11487913131713867},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.1028326153755188}],"concepts":[{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.7837496995925903},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7216445803642273},{"id":"https://openalex.org/C64093975","wikidata":"https://www.wikidata.org/wiki/Q356677","display_name":"Floating car data","level":3,"score":0.6625811457633972},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.5451265573501587},{"id":"https://openalex.org/C2776214188","wikidata":"https://www.wikidata.org/wiki/Q408386","display_name":"Inference","level":2,"score":0.5407947897911072},{"id":"https://openalex.org/C43214815","wikidata":"https://www.wikidata.org/wiki/Q7310987","display_name":"Reliability (semiconductor)","level":3,"score":0.5261126160621643},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.48165571689605713},{"id":"https://openalex.org/C2779888511","wikidata":"https://www.wikidata.org/wiki/Q244156","display_name":"Traffic congestion","level":2,"score":0.46685391664505005},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.45754098892211914},{"id":"https://openalex.org/C114809511","wikidata":"https://www.wikidata.org/wiki/Q1412924","display_name":"Flow network","level":2,"score":0.45706287026405334},{"id":"https://openalex.org/C207512268","wikidata":"https://www.wikidata.org/wiki/Q3074551","display_name":"Traffic flow (computer networking)","level":2,"score":0.4484805166721344},{"id":"https://openalex.org/C2993660032","wikidata":"https://www.wikidata.org/wiki/Q746984","display_name":"Traffic speed","level":2,"score":0.42237621545791626},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.36108946800231934},{"id":"https://openalex.org/C22212356","wikidata":"https://www.wikidata.org/wiki/Q775325","display_name":"Transport engineering","level":1,"score":0.30589979887008667},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.26242774724960327},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.24210938811302185},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.15098866820335388},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.13347738981246948},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11487913131713867},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.1028326153755188},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","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/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.0},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","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}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1109/itsc.2008.4732598","is_oa":false,"landing_page_url":"https://doi.org/10.1109/itsc.2008.4732598","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 11th International IEEE Conference on Intelligent Transportation Systems","raw_type":"proceedings-article"},{"id":"pmh:oai:escholarship.mcgill.ca:pv63g199q","is_oa":true,"landing_page_url":"https://escholarship.mcgill.ca/concern/theses/pv63g199q","pdf_url":"http://escholarship.mcgill.ca/downloads/f7623f43t","source":{"id":"https://openalex.org/S4306401568","display_name":"eScholarship@McGill (McGill)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I5023651","host_organization_name":"McGill University","host_organization_lineage":["https://openalex.org/I5023651"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},{"id":"pmh:doi:10.82308/26429","is_oa":false,"landing_page_url":"https://hdl.handle.net/20.500.14905/118704","pdf_url":null,"source":{"id":"https://openalex.org/S4406922384","display_name":"Open MIND","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":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"https://vocabularies.coar-repositories.org/resource_types/c_46ec/"},{"id":"pmh:oai:collectionscanada.gc.ca:QMM.32609","is_oa":false,"landing_page_url":"http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32609","pdf_url":null,"source":{"id":"https://openalex.org/S4306402307","display_name":"Library and Archives Canada (Government of Canada)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2802286613","host_organization_name":"Government of Canada","host_organization_lineage":["https://openalex.org/I2802286613"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Electronic Thesis or Dissertation"},{"id":"doi:10.82308/26429","is_oa":true,"landing_page_url":"https://doi.org/10.82308/26429","pdf_url":null,"source":{"id":"https://openalex.org/S7407060097","display_name":"McGill-DEV","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":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"Dissertation"}],"best_oa_location":{"id":"pmh:oai:escholarship.mcgill.ca:pv63g199q","is_oa":true,"landing_page_url":"https://escholarship.mcgill.ca/concern/theses/pv63g199q","pdf_url":"http://escholarship.mcgill.ca/downloads/f7623f43t","source":{"id":"https://openalex.org/S4306401568","display_name":"eScholarship@McGill (McGill)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I5023651","host_organization_name":"McGill University","host_organization_lineage":["https://openalex.org/I5023651"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/11","display_name":"Sustainable cities and communities","score":0.7900000214576721}],"awards":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2136383351.pdf","grobid_xml":"https://content.openalex.org/works/W2136383351.grobid-xml"},"referenced_works_count":19,"referenced_works":["https://openalex.org/W1549696287","https://openalex.org/W1568439642","https://openalex.org/W1979622972","https://openalex.org/W2058083416","https://openalex.org/W2073121023","https://openalex.org/W2086096586","https://openalex.org/W2107303257","https://openalex.org/W2107792892","https://openalex.org/W2115992646","https://openalex.org/W2124681061","https://openalex.org/W2124956833","https://openalex.org/W2135057245","https://openalex.org/W2136761100","https://openalex.org/W2149052051","https://openalex.org/W2154376416","https://openalex.org/W2154828237","https://openalex.org/W2162341761","https://openalex.org/W6677347494","https://openalex.org/W6682890145"],"related_works":["https://openalex.org/W2047739511","https://openalex.org/W2005409769","https://openalex.org/W4390987329","https://openalex.org/W2361581724","https://openalex.org/W4386289889","https://openalex.org/W2945875309","https://openalex.org/W4220875044","https://openalex.org/W3117279048","https://openalex.org/W2898775471","https://openalex.org/W2913114592"],"abstract_inverted_index":{"A":[0],"major":[1],"challenge":[2],"for":[3,18],"traffic":[4,11,42],"management":[5],"systems":[6],"is":[7,21,60,71,115],"the":[8,16,51,57,77,135,140,145],"inference":[9],"of":[10,15,34,47,53,84,138,144],"flow":[12],"in":[13,50],"regions":[14],"network":[17,46,59],"which":[19,133],"there":[20],"little":[22],"data.":[23],"In":[24],"this":[25],"paper,":[26],"GPS-based":[27],"vehicle":[28],"locator":[29],"data":[30],"from":[31,76],"a":[32,45,63,67,82],"fleet":[33],"40-60":[35],"roving":[36],"ambulances":[37],"are":[38,131],"used":[39,72],"to":[40,73,123],"estimate":[41],"congestion":[43],"along":[44],"20,000":[48],"streets":[49],"city":[52],"Ottawa,":[54],"Canada.":[55],"Essentially,":[56],"road":[58,108],"represented":[61],"as":[62,107],"directed":[64],"graph":[65],"and":[66,93,99,110,114,142],"belief":[68],"propagation":[69],"algorithm":[70],"interpolate":[74],"measurements":[75],"fleet.":[78],"The":[79],"system":[80],"incorporates":[81,96],"number":[83],"novel":[85],"features.":[86],"It":[87],"makes":[88],"no":[89],"distinctions":[90],"between":[91],"freeways":[92],"surface":[94],"streets,":[95],"both":[97],"historical":[98],"live":[100],"sensor":[101],"data,":[102],"handles":[103],"user":[104],"inputs":[105],"such":[106],"closures":[109],"manual":[111],"speed":[112],"overrides,":[113],"computationally":[116],"efficient":[117],"-":[118],"providing":[119],"updates":[120],"every":[121],"5":[122],"6":[124],"minutes":[125],"on":[126],"commodity":[127],"hardware.":[128],"Experimental":[129],"results":[130],"presented":[132],"address":[134],"key":[136],"issue":[137],"validating":[139],"performance":[141],"reliability":[143],"system.":[146]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}