{"id":"https://openalex.org/W2169378760","doi":"https://doi.org/10.23919/acc.2004.1383874","title":"Adaptive observer for traffic density estimation","display_name":"Adaptive observer for traffic density estimation","publication_year":2004,"publication_date":"2004-01-01","ids":{"openalex":"https://openalex.org/W2169378760","doi":"https://doi.org/10.23919/acc.2004.1383874","mag":"2169378760"},"language":"en","primary_location":{"id":"doi:10.23919/acc.2004.1383874","is_oa":false,"landing_page_url":"https://doi.org/10.23919/acc.2004.1383874","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2004 American Control Conference","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/A5005938346","display_name":"Luis \u00c1lvarez-Icaza","orcid":"https://orcid.org/0000-0001-9516-3950"},"institutions":[{"id":"https://openalex.org/I8961855","display_name":"Universidad Nacional Aut\u00f3noma de M\u00e9xico","ror":"https://ror.org/01tmp8f25","country_code":"MX","type":"education","lineage":["https://openalex.org/I8961855"]}],"countries":["MX"],"is_corresponding":false,"raw_author_name":"L. Alvarez-Icaza","raw_affiliation_strings":["Instituto de Ingenier\u00eda, Universidad Nacional Aut\u00e9noma de M\u00e9xico, Mexico"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Instituto de Ingenier\u00eda, Universidad Nacional Aut\u00e9noma de M\u00e9xico, Mexico","institution_ids":["https://openalex.org/I8961855"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5105935872","display_name":"L. Munoz","orcid":null},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"L. Munoz","raw_affiliation_strings":["Department of Mechanical Engineering, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055445693","display_name":"Xiaotian Sun","orcid":"https://orcid.org/0000-0002-8823-5001"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xiaotian Sun","raw_affiliation_strings":["Department of Mechanical Engineering, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002745879","display_name":"Roberto Horowitz","orcid":"https://orcid.org/0000-0003-2807-0054"},"institutions":[{"id":"https://openalex.org/I95457486","display_name":"University of California, Berkeley","ror":"https://ror.org/01an7q238","country_code":"US","type":"education","lineage":["https://openalex.org/I95457486"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R. Horowitz","raw_affiliation_strings":["Department of Mechanical Engineering, University of California, Berkeley, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Mechanical Engineering, University of California, Berkeley, CA, USA","institution_ids":["https://openalex.org/I95457486"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.7552,"has_fulltext":false,"cited_by_count":28,"citation_normalized_percentile":{"value":0.87730482,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"2705","last_page":"2710 vol.3"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10524","display_name":"Traffic control and management","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"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/T10524","display_name":"Traffic control and management","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T11344","display_name":"Traffic Prediction and Management Techniques","score":0.9977999925613403,"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/T11099","display_name":"Autonomous Vehicle Technology and Safety","score":0.98580002784729,"subfield":{"id":"https://openalex.org/subfields/2203","display_name":"Automotive 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/metering-mode","display_name":"Metering mode","score":0.6806582808494568},{"id":"https://openalex.org/keywords/traffic-flow","display_name":"Traffic flow (computer networking)","score":0.674620509147644},{"id":"https://openalex.org/keywords/observer","display_name":"Observer (physics)","score":0.6612327694892883},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6066641211509705},{"id":"https://openalex.org/keywords/traffic-wave","display_name":"Traffic wave","score":0.5768858194351196},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.4723535478115082},{"id":"https://openalex.org/keywords/adaptive-control","display_name":"Adaptive control","score":0.4297229051589966},{"id":"https://openalex.org/keywords/traffic-congestion","display_name":"Traffic congestion","score":0.41958245635032654},{"id":"https://openalex.org/keywords/traffic-congestion-reconstruction-with-kerners-three-phase-theory","display_name":"Traffic congestion reconstruction with Kerner's three-phase theory","score":0.4177865982055664},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3733975291252136},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.34348130226135254},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.21159034967422485},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.20016956329345703},{"id":"https://openalex.org/keywords/transport-engineering","display_name":"Transport engineering","score":0.15906056761741638},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.09175661206245422},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.08781573176383972}],"concepts":[{"id":"https://openalex.org/C30905978","wikidata":"https://www.wikidata.org/wiki/Q815598","display_name":"Metering mode","level":2,"score":0.6806582808494568},{"id":"https://openalex.org/C207512268","wikidata":"https://www.wikidata.org/wiki/Q3074551","display_name":"Traffic flow (computer networking)","level":2,"score":0.674620509147644},{"id":"https://openalex.org/C2780704645","wikidata":"https://www.wikidata.org/wiki/Q9251458","display_name":"Observer (physics)","level":2,"score":0.6612327694892883},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6066641211509705},{"id":"https://openalex.org/C168069670","wikidata":"https://www.wikidata.org/wiki/Q2596069","display_name":"Traffic wave","level":4,"score":0.5768858194351196},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4723535478115082},{"id":"https://openalex.org/C107464732","wikidata":"https://www.wikidata.org/wiki/Q235781","display_name":"Adaptive control","level":3,"score":0.4297229051589966},{"id":"https://openalex.org/C2779888511","wikidata":"https://www.wikidata.org/wiki/Q244156","display_name":"Traffic congestion","level":2,"score":0.41958245635032654},{"id":"https://openalex.org/C25492975","wikidata":"https://www.wikidata.org/wiki/Q960570","display_name":"Traffic congestion reconstruction with Kerner's three-phase theory","level":3,"score":0.4177865982055664},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3733975291252136},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.34348130226135254},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.21159034967422485},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.20016956329345703},{"id":"https://openalex.org/C22212356","wikidata":"https://www.wikidata.org/wiki/Q775325","display_name":"Transport engineering","level":1,"score":0.15906056761741638},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.09175661206245422},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08781573176383972},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.23919/acc.2004.1383874","is_oa":false,"landing_page_url":"https://doi.org/10.23919/acc.2004.1383874","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2004 American Control Conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5600000023841858,"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1484203172","https://openalex.org/W1986668667","https://openalex.org/W2020082215","https://openalex.org/W2098916117","https://openalex.org/W2113406963","https://openalex.org/W2128149574","https://openalex.org/W2140464472"],"related_works":["https://openalex.org/W2036604929","https://openalex.org/W4390987329","https://openalex.org/W3150829802","https://openalex.org/W779674967","https://openalex.org/W3161289260","https://openalex.org/W301804496","https://openalex.org/W4323845903","https://openalex.org/W4391115038","https://openalex.org/W2769680178","https://openalex.org/W1993589848"],"abstract_inverted_index":{"A":[0],"traffic":[1,29,46,86],"density":[2,74],"scheme":[3,17],"to":[4,12],"be":[5,19],"used":[6,20],"for":[7,72],"real-time":[8],"on-ramp":[9,61],"metering":[10],"control":[11],"freeways":[13],"is":[14,42,62,75,94],"proposed.":[15],"The":[16,92],"can":[18],"in":[21,53],"two":[22],"situations:":[23],"a)":[24],"when":[25,36],"there":[26],"are":[27,39,51],"no":[28],"flow":[30,47,87],"sensors":[31,38],"appropriately":[32],"located;":[33],"and":[34,48],"b)":[35],"available":[37,52],"faulty.":[40],"It":[41],"assumed":[43],"that":[44,77,83,99],"some":[45],"velocity":[49],"measurements":[50],"the":[54,57,80,85,103,106],"vicinity":[55],"of":[56,102,105,108],"place":[58],"where":[59],"an":[60],"located.":[63],"Based":[64],"on":[65,96],"this":[66],"information,":[67],"a":[68],"non-linear":[69],"adaptive":[70],"observer":[71],"vehicle":[73],"designed":[76],"also":[78],"estimates":[79],"mixing":[81],"factors":[82],"define":[84],"characteristics:":[88],"free":[89],"or":[90],"congested.":[91],"design":[93],"based":[95],"Lyapunov":[97],"techniques":[98],"take":[100],"advantage":[101],"structure":[104],"conservation":[107],"vehicles":[109],"model.":[110]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}