{"id":"https://openalex.org/W3018824936","doi":"https://doi.org/10.1016/j.knosys.2020.105940","title":"Novel trajectory privacy-preserving method based on prefix tree using differential privacy","display_name":"Novel trajectory privacy-preserving method based on prefix tree using differential privacy","publication_year":2020,"publication_date":"2020-04-22","ids":{"openalex":"https://openalex.org/W3018824936","doi":"https://doi.org/10.1016/j.knosys.2020.105940","mag":"3018824936"},"language":"en","primary_location":{"id":"doi:10.1016/j.knosys.2020.105940","doi":"https://doi.org/10.1016/j.knosys.2020.105940","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.knosys.2020.105940","pdf_url":null,"source":{"id":"https://openalex.org/S10169007","display_name":"Knowledge-Based Systems","issn_l":"0950-7051","issn":["0950-7051","1872-7409"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","ccf-c","cwts-core","dongbi-b","fnege-4","jufo-2","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Knowledge-Based Systems","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"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/A5100632226","display_name":"Xiaodong Zhao","orcid":"https://orcid.org/0000-0003-4303-8861","observed_orcids":["https://orcid.org/0000-0003-4303-8861"]},"institutions":[{"id":"https://openalex.org/I9842412","display_name":"Nanjing University of Aeronautics and Astronautics","ror":"https://ror.org/01scyh794","country_code":"CN","type":"education","lineage":["https://openalex.org/I9842412"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiaodong Zhao","raw_affiliation_strings":["College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China","institution_ids":["https://openalex.org/I9842412"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5088602677","display_name":"Dechang Pi","orcid":"https://orcid.org/0000-0002-6593-4563","observed_orcids":["https://orcid.org/0000-0002-6593-4563","https://orcid.org/0009-0008-4412-6920"]},"institutions":[{"id":"https://openalex.org/I9842412","display_name":"Nanjing University of Aeronautics and Astronautics","ror":"https://ror.org/01scyh794","country_code":"CN","type":"education","lineage":["https://openalex.org/I9842412"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Dechang Pi","raw_affiliation_strings":["College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China","institution_ids":["https://openalex.org/I9842412"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103151025","display_name":"Junfu Chen","orcid":"https://orcid.org/0000-0002-6106-6121","observed_orcids":["https://orcid.org/0000-0002-6106-6121"]},"institutions":[{"id":"https://openalex.org/I9842412","display_name":"Nanjing University of Aeronautics and Astronautics","ror":"https://ror.org/01scyh794","country_code":"CN","type":"education","lineage":["https://openalex.org/I9842412"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junfu Chen","raw_affiliation_strings":["College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China","institution_ids":["https://openalex.org/I9842412"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5088602677"],"corresponding_institution_ids":["https://openalex.org/I9842412"],"apc_list":{"value":2550,"currency":"USD","value_usd":2550},"apc_paid":null,"fwci":1.9199,"has_fulltext":false,"cited_by_count":49,"citation_normalized_percentile":{"value":0.87518976,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":99},"biblio":{"volume":"198","issue":null,"first_page":"105940","last_page":"105940"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9984999895095825,"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":0.9984999895095825,"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/T11106","display_name":"Data Management and Algorithms","score":0.0013000000035390258,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T11614","display_name":"Cloud Data Security Solutions","score":0.0,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/trajectory-privacy","display_name":"trajectory privacy","score":0.7919999957084656},{"id":"https://openalex.org/keywords/differential-privacy","display_name":"differential privacy","score":0.9350000023841858},{"id":"https://openalex.org/keywords/prefix-tree","display_name":"prefix tree","score":0.9419999718666077},{"id":"https://openalex.org/keywords/location-based-services","display_name":"location-based services","score":0.8149999976158142},{"id":"https://openalex.org/keywords/background-knowledge-attack","display_name":"background knowledge attack","score":0.8610000014305115},{"id":"https://openalex.org/keywords/minimum-description-length","display_name":"minimum description length","score":0.8429999947547913},{"id":"https://openalex.org/keywords/dijkstra-s-algorithm","display_name":"Dijkstra's algorithm","score":0.6370000243186951},{"id":"https://openalex.org/keywords/laplacian-noise","display_name":"Laplacian noise","score":0.9490000009536743},{"id":"https://openalex.org/keywords/bike-sharing","display_name":"bike sharing","score":0.609000027179718}],"concepts":[{"id":"https://openalex.org/C23130292","wikidata":"https://www.wikidata.org/wiki/Q5275358","display_name":"Differential privacy","level":2,"score":0.8409051895141602},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8066035509109497},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.68647700548172},{"id":"https://openalex.org/C190290938","wikidata":"https://www.wikidata.org/wiki/Q387015","display_name":"Trie","level":3,"score":0.6444571614265442},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.5517131090164185},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5324680805206299},{"id":"https://openalex.org/C509729295","wikidata":"https://www.wikidata.org/wiki/Q7246032","display_name":"Privacy software","level":3,"score":0.4424894452095032},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4313020706176758},{"id":"https://openalex.org/C123201435","wikidata":"https://www.wikidata.org/wiki/Q456632","display_name":"Information privacy","level":2,"score":0.366303026676178},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.3290413022041321},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.308491051197052},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.20003965497016907},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.15043851733207703},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"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/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/j.knosys.2020.105940","doi":"https://doi.org/10.1016/j.knosys.2020.105940","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.knosys.2020.105940","pdf_url":null,"source":{"id":"https://openalex.org/S10169007","display_name":"Knowledge-Based Systems","issn_l":"0950-7051","issn":["0950-7051","1872-7409"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-class-a","anvur-scientific","ccf-c","cwts-core","dongbi-b","fnege-4","jufo-2","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Knowledge-Based Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G3210365191","display_name":null,"funder_award_id":"U1433116","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4890131602","display_name":null,"funder_award_id":"NP2017208","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G7265199493","display_name":null,"funder_award_id":"Kfjj20191603","funder_id":"https://openalex.org/F4320334859","funder_display_name":"Foundation of the Graduate Innovation Center, Nanjing University of Aeronautics and Astronautics"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320334859","display_name":"Foundation of the Graduate Innovation Center, Nanjing University of Aeronautics and Astronautics","ror":"https://ror.org/01scyh794"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":45,"referenced_works":["https://openalex.org/W1588905725","https://openalex.org/W1981398125","https://openalex.org/W1993116423","https://openalex.org/W2012873258","https://openalex.org/W2015569667","https://openalex.org/W2022542865","https://openalex.org/W2072645237","https://openalex.org/W2123779242","https://openalex.org/W2123820077","https://openalex.org/W2129157759","https://openalex.org/W2142922715","https://openalex.org/W2159024459","https://openalex.org/W2327139569","https://openalex.org/W2342159830","https://openalex.org/W2595094219","https://openalex.org/W2620945363","https://openalex.org/W2743398363","https://openalex.org/W2775752987","https://openalex.org/W2778645925","https://openalex.org/W2890400562","https://openalex.org/W2895224869","https://openalex.org/W2899711044","https://openalex.org/W2907935645","https://openalex.org/W2908550500","https://openalex.org/W2911978475","https://openalex.org/W2945539353","https://openalex.org/W2951852279","https://openalex.org/W2953940317","https://openalex.org/W2954215623","https://openalex.org/W2955762811","https://openalex.org/W2970450991","https://openalex.org/W2970585478","https://openalex.org/W2977330553","https://openalex.org/W4206500381","https://openalex.org/W4236467006","https://openalex.org/W4242690240","https://openalex.org/W4244854391","https://openalex.org/W4246297465","https://openalex.org/W4247765142","https://openalex.org/W4248949446","https://openalex.org/W4251072778","https://openalex.org/W4251334431","https://openalex.org/W4254539327","https://openalex.org/W4299692287","https://openalex.org/W6996850568"],"related_works":["https://openalex.org/W4245118623","https://openalex.org/W2955813252","https://openalex.org/W3170604354","https://openalex.org/W4387131616","https://openalex.org/W4366582528","https://openalex.org/W7062476982","https://openalex.org/W3003710153","https://openalex.org/W4293030645","https://openalex.org/W3204693123","https://openalex.org/W3035438526"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":4},{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":14},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":8},{"year":2020,"cited_by_count":1}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2020-05-01T00:00:00"}