{"id":"https://openalex.org/W4413251464","doi":"https://doi.org/10.3390/sym17081266","title":"A Semantic Behavioral Sequence-Based Approach to Trajectory Privacy Protection","display_name":"A Semantic Behavioral Sequence-Based Approach to Trajectory Privacy Protection","publication_year":2025,"publication_date":"2025-08-07","ids":{"openalex":"https://openalex.org/W4413251464","doi":"https://doi.org/10.3390/sym17081266"},"language":"en","primary_location":{"id":"doi:10.3390/sym17081266","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym17081266","pdf_url":"https://www.mdpi.com/2073-8994/17/8/1266/pdf?version=1754575111","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2073-8994/17/8/1266/pdf?version=1754575111","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101685775","display_name":"Ji Xi","orcid":"https://orcid.org/0000-0001-8516-4984"},"institutions":[{"id":"https://openalex.org/I4210108723","display_name":"Changzhou Institute of Technology","ror":"https://ror.org/020mrfq61","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210108723"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Ji Xi","raw_affiliation_strings":["School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China"],"affiliations":[{"raw_affiliation_string":"School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China","institution_ids":["https://openalex.org/I4210108723"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100646599","display_name":"Weiqi Zhang","orcid":"https://orcid.org/0000-0002-8885-5104"},"institutions":[{"id":"https://openalex.org/I4210108723","display_name":"Changzhou Institute of Technology","ror":"https://ror.org/020mrfq61","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210108723"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Weiqi Zhang","raw_affiliation_strings":["School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China"],"affiliations":[{"raw_affiliation_string":"School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China","institution_ids":["https://openalex.org/I4210108723"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058607404","display_name":"Zhengwang Xia","orcid":"https://orcid.org/0000-0002-6815-5856"},"institutions":[{"id":"https://openalex.org/I4210108723","display_name":"Changzhou Institute of Technology","ror":"https://ror.org/020mrfq61","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210108723"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhengwang Xia","raw_affiliation_strings":["School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China"],"affiliations":[{"raw_affiliation_string":"School of Computer Information Engineering, Changzhou Institute of Technology, No.666, Liaohe Road, Changzhou 213022, China","institution_ids":["https://openalex.org/I4210108723"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101872701","display_name":"Li Zhao","orcid":"https://orcid.org/0000-0002-7145-4718"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Li Zhao","raw_affiliation_strings":["School of Information Science and Engineering, Southeast University, Nanjing 210096, China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Engineering, Southeast University, Nanjing 210096, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5075748715","display_name":"Huawei Tao","orcid":"https://orcid.org/0000-0002-9194-0297"},"institutions":[{"id":"https://openalex.org/I36152291","display_name":"Henan University of Technology","ror":"https://ror.org/05sbgwt55","country_code":"CN","type":"education","lineage":["https://openalex.org/I36152291"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Huawei Tao","raw_affiliation_strings":["Key Laboratory of Food Information Processing and Control, Ministry of Education, Henan University of Technology, Zhengzhou 450001, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Food Information Processing and Control, Ministry of Education, Henan University of Technology, Zhengzhou 450001, China","institution_ids":["https://openalex.org/I36152291"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5101685775"],"corresponding_institution_ids":["https://openalex.org/I4210108723"],"apc_list":{"value":2000,"currency":"CHF","value_usd":2165},"apc_paid":{"value":2000,"currency":"CHF","value_usd":2165},"fwci":2.1148,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.88404149,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":"17","issue":"8","first_page":"1266","last_page":"1266"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T11980","display_name":"Human Mobility and Location-Based Analysis","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/3313","display_name":"Transportation"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9991000294685364,"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":0.9919999837875366,"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/trajectory","display_name":"Trajectory","score":0.864534854888916},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8253733515739441},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.5928525924682617},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.521374523639679},{"id":"https://openalex.org/keywords/usability","display_name":"Usability","score":0.5185704827308655},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.47888344526290894},{"id":"https://openalex.org/keywords/sequence","display_name":"Sequence (biology)","score":0.4195736348628998},{"id":"https://openalex.org/keywords/semantic-data-model","display_name":"Semantic data model","score":0.4183100461959839},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.33905312418937683},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.25244808197021484},{"id":"https://openalex.org/keywords/human\u2013computer-interaction","display_name":"Human\u2013computer interaction","score":0.20003864169120789},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.09949097037315369}],"concepts":[{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.864534854888916},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8253733515739441},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.5928525924682617},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.521374523639679},{"id":"https://openalex.org/C170130773","wikidata":"https://www.wikidata.org/wiki/Q216378","display_name":"Usability","level":2,"score":0.5185704827308655},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.47888344526290894},{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.4195736348628998},{"id":"https://openalex.org/C90312973","wikidata":"https://www.wikidata.org/wiki/Q7449052","display_name":"Semantic data model","level":2,"score":0.4183100461959839},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.33905312418937683},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.25244808197021484},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.20003864169120789},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.09949097037315369},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","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/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.3390/sym17081266","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym17081266","pdf_url":"https://www.mdpi.com/2073-8994/17/8/1266/pdf?version=1754575111","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.3390/sym17081266","is_oa":true,"landing_page_url":"https://doi.org/10.3390/sym17081266","pdf_url":"https://www.mdpi.com/2073-8994/17/8/1266/pdf?version=1754575111","source":{"id":"https://openalex.org/S190787756","display_name":"Symmetry","issn_l":"2073-8994","issn":["2073-8994"],"is_oa":true,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Symmetry","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.75,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4413251464.pdf","grobid_xml":"https://content.openalex.org/works/W4413251464.grobid-xml"},"referenced_works_count":46,"referenced_works":["https://openalex.org/W1626398438","https://openalex.org/W1982590063","https://openalex.org/W2015569667","https://openalex.org/W2040246974","https://openalex.org/W2045050127","https://openalex.org/W2079833280","https://openalex.org/W2108215372","https://openalex.org/W2136317921","https://openalex.org/W2140251882","https://openalex.org/W2153207204","https://openalex.org/W2245706161","https://openalex.org/W2323121671","https://openalex.org/W2338583691","https://openalex.org/W2342926214","https://openalex.org/W2594020291","https://openalex.org/W2723293840","https://openalex.org/W2762786854","https://openalex.org/W2766487710","https://openalex.org/W2789844390","https://openalex.org/W2793654063","https://openalex.org/W2807091904","https://openalex.org/W2809112621","https://openalex.org/W2890044493","https://openalex.org/W2899320417","https://openalex.org/W2904887709","https://openalex.org/W2945772520","https://openalex.org/W2966123616","https://openalex.org/W2987999026","https://openalex.org/W3032044946","https://openalex.org/W3093108579","https://openalex.org/W3105595718","https://openalex.org/W3106252282","https://openalex.org/W3112867804","https://openalex.org/W3118447047","https://openalex.org/W3133392487","https://openalex.org/W4205403405","https://openalex.org/W4312795606","https://openalex.org/W4377691474","https://openalex.org/W4382678442","https://openalex.org/W4386030447","https://openalex.org/W4386113168","https://openalex.org/W4386485542","https://openalex.org/W4409896602","https://openalex.org/W4410699199","https://openalex.org/W4411690395","https://openalex.org/W6636500457"],"related_works":["https://openalex.org/W2429057255","https://openalex.org/W2187546663","https://openalex.org/W148745890","https://openalex.org/W4389670110","https://openalex.org/W2611942503","https://openalex.org/W4315621326","https://openalex.org/W2899790217","https://openalex.org/W2598865957","https://openalex.org/W1576092969","https://openalex.org/W2524154428"],"abstract_inverted_index":{"Trajectory":[0,57],"data":[1,110,174,185],"contain":[2],"numerous":[3],"sensitive":[4,117],"attributes.":[5],"Unauthorized":[6],"disclosure":[7],"of":[8,39,116],"precise":[9],"user":[10,72,78,194],"trajectory":[11,26,102,106,109,137],"information":[12],"generates":[13,86],"persistent":[14],"privacy":[15,27,45,178,195],"and":[16,66,84,104,139,187],"security":[17],"concerns":[18],"that":[19,163],"significantly":[20,183],"impact":[21],"daily":[22],"life.":[23],"Most":[24],"existing":[25],"protection":[28,115],"schemes":[29],"focus":[30],"on":[31],"geographic":[32,101],"trajectories":[33,88,157],"while":[34,112,171],"neglecting":[35],"the":[36,53,124],"critical":[37],"importance":[38],"semantic":[40,105,150],"trajectories,":[41],"resulting":[42],"in":[43,123],"ongoing":[44],"vulnerabilities.":[46],"To":[47],"address":[48],"this":[49],"limitation,":[50],"we":[51],"propose":[52],"Semantic":[54],"Behavior":[55],"Sequence-based":[56],"Privacy":[58],"Protection":[59],"method":[60,182],"(SBS-TPP).":[61],"Our":[62],"approach":[63],"integrates":[64],"short-term":[65],"long-term":[67],"behavioral":[68,136],"patterns":[69],"within":[70],"a":[71],"behavior":[73,129],"modeling":[74],"layer":[75],"to":[76,99],"identify":[77],"preferences.":[79],"A":[80],"dual-model":[81],"framework":[82,121],"(geographic":[83],"semantic)":[85],"noise-injected":[87],"with":[89,148],"maximized":[90],"noise":[91,97,141,146],"potential.":[92],"This":[93],"methodology":[94],"applies":[95],"symmetric":[96],"addition":[98],"both":[100],"fragments":[103],"segments,":[107],"optimizing":[108],"utility":[111,175],"ensuring":[113],"robust":[114],"information.":[118],"The":[119,180],"SBS-TPP":[120],"operates":[122],"following":[125],"two":[126],"phases:":[127],"firstly,":[128],"modeling,":[130],"which":[131,143],"comprises":[132],"interest":[133,165],"extraction":[134,166],"from":[135,152],"sequences,":[138],"secondly,":[140],"generation,":[142],"creates":[144],"synthetic":[145],"locations":[147],"maximal":[149],"expectation":[151],"original":[153],"locations,":[154],"yielding":[155],"privacy-enhanced":[156],"for":[158],"publication.":[159],"Experimental":[160],"results":[161],"demonstrate":[162],"our":[164],"model":[167],"achieves":[168],"93.7%":[169],"accuracy":[170],"maintaining":[172],"81.6%":[173],"under":[176],"strict":[177],"guarantees.":[179],"proposed":[181],"enhances":[184],"usability":[186],"enables":[188],"effective":[189],"recommendation":[190],"services":[191],"without":[192],"compromising":[193],"or":[196],"security.":[197]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-04-04T08:04:53.788161","created_date":"2025-10-10T00:00:00"}
