{"id":"https://openalex.org/W2472977075","doi":"https://doi.org/10.1145/2830834.2830835","title":"A Distributed Approach for Privacy Preservation in the Publication of Trajectory Data","display_name":"A Distributed Approach for Privacy Preservation in the Publication of Trajectory Data","publication_year":2015,"publication_date":"2015-11-03","ids":{"openalex":"https://openalex.org/W2472977075","doi":"https://doi.org/10.1145/2830834.2830835","mag":"2472977075"},"language":"en","primary_location":{"id":"doi:10.1145/2830834.2830835","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2830834.2830835","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2nd Workshop on Privacy in Geographic Information Collection and Analysis","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://www.repositorio.ufc.br/handle/riufc/16375","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5027681930","display_name":"Felipe T. Brito","orcid":"https://orcid.org/0000-0002-0015-2261"},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Felipe T. Brito","raw_affiliation_strings":["Federal University of Cear\u00e1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Cear\u00e1","institution_ids":["https://openalex.org/I243754102"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051956236","display_name":"Antonio Cavalcante Araujo Neto","orcid":"https://orcid.org/0000-0002-2172-9859"},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Ant\u00f4nio C. Ara\u00fajo Neto","raw_affiliation_strings":["Federal University of Cear\u00e1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Cear\u00e1","institution_ids":["https://openalex.org/I243754102"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025371630","display_name":"Camila F. Costa","orcid":"https://orcid.org/0000-0003-2163-8612"},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Camila F. Costa","raw_affiliation_strings":["Federal University of Cear\u00e1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Cear\u00e1","institution_ids":["https://openalex.org/I243754102"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060771141","display_name":"Andr\u00e9 L. C. Mendon\u00e7a","orcid":null},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Andr\u00e9 L. C. Mendon\u00e7a","raw_affiliation_strings":["Federal University of Cear\u00e1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Cear\u00e1","institution_ids":["https://openalex.org/I243754102"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5064422885","display_name":"Javam C. Machado","orcid":"https://orcid.org/0000-0002-8430-9421"},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Javam C. Machado","raw_affiliation_strings":["Federal University of Cear\u00e1"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Cear\u00e1","institution_ids":["https://openalex.org/I243754102"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I243754102"],"apc_list":null,"apc_paid":null,"fwci":0.823,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.76053172,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":1.0,"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/T10237","display_name":"Cryptography and Data Security","score":0.9937999844551086,"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/T10761","display_name":"Vehicular Ad Hoc Networks (VANETs)","score":0.9930999875068665,"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/computer-science","display_name":"Computer science","score":0.842257022857666},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.8276107311248779},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.7868551015853882},{"id":"https://openalex.org/keywords/identifier","display_name":"Identifier","score":0.7391016483306885},{"id":"https://openalex.org/keywords/data-publishing","display_name":"Data publishing","score":0.6571345329284668},{"id":"https://openalex.org/keywords/anonymity","display_name":"Anonymity","score":0.5828940868377686},{"id":"https://openalex.org/keywords/information-privacy","display_name":"Information privacy","score":0.4969532787799835},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.478168785572052},{"id":"https://openalex.org/keywords/unique-identifier","display_name":"Unique identifier","score":0.45276322960853577},{"id":"https://openalex.org/keywords/trace","display_name":"TRACE (psycholinguistics)","score":0.44964632391929626},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.42716753482818604},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.4263017773628235},{"id":"https://openalex.org/keywords/mobile-device","display_name":"Mobile device","score":0.4108022153377533},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.3576236367225647},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3426276445388794},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.2852807641029358},{"id":"https://openalex.org/keywords/publishing","display_name":"Publishing","score":0.18019047379493713},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.14207080006599426}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.842257022857666},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.8276107311248779},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7868551015853882},{"id":"https://openalex.org/C154504017","wikidata":"https://www.wikidata.org/wiki/Q853614","display_name":"Identifier","level":2,"score":0.7391016483306885},{"id":"https://openalex.org/C2781396290","wikidata":"https://www.wikidata.org/wiki/Q17051824","display_name":"Data publishing","level":3,"score":0.6571345329284668},{"id":"https://openalex.org/C178005623","wikidata":"https://www.wikidata.org/wiki/Q308859","display_name":"Anonymity","level":2,"score":0.5828940868377686},{"id":"https://openalex.org/C123201435","wikidata":"https://www.wikidata.org/wiki/Q456632","display_name":"Information privacy","level":2,"score":0.4969532787799835},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.478168785572052},{"id":"https://openalex.org/C119839945","wikidata":"https://www.wikidata.org/wiki/Q6545185","display_name":"Unique identifier","level":3,"score":0.45276322960853577},{"id":"https://openalex.org/C75291252","wikidata":"https://www.wikidata.org/wiki/Q1315756","display_name":"TRACE (psycholinguistics)","level":2,"score":0.44964632391929626},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.42716753482818604},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.4263017773628235},{"id":"https://openalex.org/C186967261","wikidata":"https://www.wikidata.org/wiki/Q5082128","display_name":"Mobile device","level":2,"score":0.4108022153377533},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.3576236367225647},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3426276445388794},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.2852807641029358},{"id":"https://openalex.org/C151719136","wikidata":"https://www.wikidata.org/wiki/Q3972943","display_name":"Publishing","level":2,"score":0.18019047379493713},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.14207080006599426},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","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},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/2830834.2830835","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2830834.2830835","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 2nd Workshop on Privacy in Geographic Information Collection and Analysis","raw_type":"proceedings-article"},{"id":"pmh:oai:repositorio.ufc.br:riufc/16375","is_oa":true,"landing_page_url":"http://www.repositorio.ufc.br/handle/riufc/16375","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"instacron:UFC","raw_type":"info:eu-repo/semantics/masterThesis"}],"best_oa_location":{"id":"pmh:oai:repositorio.ufc.br:riufc/16375","is_oa":true,"landing_page_url":"http://www.repositorio.ufc.br/handle/riufc/16375","pdf_url":null,"source":{"id":"https://openalex.org/S4306402641","display_name":"LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Cient\u00edficas)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4383465926","host_organization_name":"LA Referencia","host_organization_lineage":["https://openalex.org/I4383465926"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"instacron:UFC","raw_type":"info:eu-repo/semantics/masterThesis"},"sustainable_development_goals":[{"score":0.6200000047683716,"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320322025","display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","ror":"https://ror.org/03swz6y49"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W1584893807","https://openalex.org/W1637387994","https://openalex.org/W1641039719","https://openalex.org/W1966862198","https://openalex.org/W1967838552","https://openalex.org/W1968064480","https://openalex.org/W2010362518","https://openalex.org/W2011039300","https://openalex.org/W2015569667","https://openalex.org/W2031955931","https://openalex.org/W2041371070","https://openalex.org/W2052806235","https://openalex.org/W2058166949","https://openalex.org/W2079657950","https://openalex.org/W2095363092","https://openalex.org/W2096558825","https://openalex.org/W2100410990","https://openalex.org/W2100921307","https://openalex.org/W2108215372","https://openalex.org/W2116135393","https://openalex.org/W2122465391","https://openalex.org/W2134167315","https://openalex.org/W2136114025","https://openalex.org/W2142922715","https://openalex.org/W2158037536","https://openalex.org/W2159024459","https://openalex.org/W2251664932","https://openalex.org/W2911978475","https://openalex.org/W3003724261","https://openalex.org/W4231750372"],"related_works":["https://openalex.org/W2413568490","https://openalex.org/W1913624564","https://openalex.org/W3130054399","https://openalex.org/W4301062032","https://openalex.org/W2319837024","https://openalex.org/W2343500026","https://openalex.org/W2390627310","https://openalex.org/W2413664130","https://openalex.org/W2051731675","https://openalex.org/W2033159440"],"abstract_inverted_index":{"Advancements":[0],"in":[1,152],"mobile":[2],"computing":[3,112],"techniques":[4],"along":[5],"with":[6,75,92],"the":[7,93,138,144,164,173],"pervasiveness":[8],"of":[9,17,39,46,54,95,155,166],"location-based":[10],"services":[11],"have":[12],"generated":[13],"a":[14,131,160],"great":[15],"amount":[16,45,154],"trajectory":[18,47,59,104,123,187],"data.":[19,156],"These":[20],"data":[21,27,48,105,124,188],"can":[22,62],"be":[23,63,69,83,176],"used":[24,70],"for":[25,100,110,186],"various":[26],"analysis":[28],"purposes":[29],"such":[30],"as":[31],"traffic":[32],"flow":[33],"analysis,":[34],"infrastructure":[35],"planning":[36],"and":[37,68,133,142,193],"understanding":[38],"human":[40],"behavior.":[41],"However,":[42],"publishing":[43],"this":[44,127],"may":[49,82],"lead":[50],"to":[51,65,71,85,90,120,162,175],"serious":[52],"risks":[53],"privacy":[55,140],"breach.":[56],"Quasi-identifiers":[57],"are":[58],"points":[60],"that":[61,136,182],"linked":[64],"external":[66],"information":[67,167],"identify":[72],"individuals":[73,91],"associated":[74],"trajectories.":[76],"Therefore,":[77],"by":[78,168],"analyzing":[79],"quasi-identifiers,":[80],"one":[81],"able":[84],"trace":[86],"anonymous":[87],"trajectories":[88],"back":[89],"aid":[94],"location-aware":[96],"social":[97],"networking":[98],"applications,":[99],"example.":[101],"Most":[102],"existing":[103,196],"anonymization":[106,189],"approaches":[107],"were":[108],"proposed":[109,184],"centralized":[111],"environments,":[113],"so":[114],"they":[115],"usually":[116],"present":[117,159],"poor":[118],"performance":[119],"anonymize":[121],"large":[122],"sets.":[125],"In":[126],"paper":[128],"we":[129],"propose":[130],"distributed":[132],"efficient":[134,194],"strategy":[135],"adopts":[137],"km-anonymity":[139],"model":[141],"uses":[143],"scalable":[145,192],"MapReduce":[146],"paradigm,":[147],"which":[148],"allows":[149],"finding":[150],"quasi-identifiers":[151,174],"larger":[153],"We":[157],"also":[158],"technique":[161],"minimize":[163],"loss":[165],"selecting":[169],"key":[170],"locations":[171],"from":[172],"suppressed.":[177],"Experimental":[178],"evaluation":[179],"results":[180],"demonstrate":[181],"our":[183],"approach":[185],"is":[190],"more":[191],"than":[195],"works.":[197]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
