{"id":"https://openalex.org/W4415481594","doi":"https://doi.org/10.1109/tifs.2025.3624950","title":"Trace Your Footprint: Efficient Spatial Keyword Query Over Encrypted Trajectory Data","display_name":"Trace Your Footprint: Efficient Spatial Keyword Query Over Encrypted Trajectory Data","publication_year":2025,"publication_date":"2025-01-01","ids":{"openalex":"https://openalex.org/W4415481594","doi":"https://doi.org/10.1109/tifs.2025.3624950"},"language":"en","primary_location":{"id":"doi:10.1109/tifs.2025.3624950","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2025.3624950","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Information Forensics and Security","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://ink.library.smu.edu.sg/sis_research/10526","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102885964","display_name":"Yinbin Miao","orcid":"https://orcid.org/0000-0001-5437-3572"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Yinbin Miao","raw_affiliation_strings":["School of Cyber Engineering, Xidian University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0001-5437-3572","affiliations":[{"raw_affiliation_string":"School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Xin Wang","orcid":"https://orcid.org/0009-0002-3354-9342"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xin Wang","raw_affiliation_strings":["School of Cyber Engineering, Xidian University, Xi’an, China"],"raw_orcid":"https://orcid.org/0009-0002-3354-9342","affiliations":[{"raw_affiliation_string":"School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Shu Zhang","orcid":"https://orcid.org/0009-0007-9690-335X"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shu Zhang","raw_affiliation_strings":["School of Cyber Engineering, Xidian University, Xi’an, China"],"raw_orcid":"https://orcid.org/0009-0007-9690-335X","affiliations":[{"raw_affiliation_string":"School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100626958","display_name":"Xinghua Li","orcid":"https://orcid.org/0000-0002-5583-4155"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xinghua Li","raw_affiliation_strings":["State Key Laboratory of Integrated Service Networks, School of Cyber Engineering, Xidian University, Xi’an, China","School of Cyber Engineering, State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0002-5583-4155","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Integrated Service Networks, School of Cyber Engineering, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"School of Cyber Engineering, State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038014942","display_name":"Shujiang Xu","orcid":"https://orcid.org/0000-0001-9151-2834"},"institutions":[{"id":"https://openalex.org/I152269853","display_name":"Qilu University of Technology","ror":"https://ror.org/04hyzq608","country_code":"CN","type":"education","lineage":["https://openalex.org/I152269853"]},{"id":"https://openalex.org/I4210142748","display_name":"Shandong Academy of Sciences","ror":"https://ror.org/04y8d6y55","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210142748"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shujiang Xu","raw_affiliation_strings":["Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China","Ministry of Education, Shandong Computer Science Center, Key Laboratory of Computing Power Network and Information Security, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China"],"raw_orcid":"https://orcid.org/0000-0001-9151-2834","affiliations":[{"raw_affiliation_string":"Key Laboratory of Computing Power Network and Information Security, Ministry of Education, Shandong Computer Science Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China","institution_ids":["https://openalex.org/I152269853","https://openalex.org/I4210142748"]},{"raw_affiliation_string":"Ministry of Education, Shandong Computer Science Center, Key Laboratory of Computing Power Network and Information Security, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China","institution_ids":["https://openalex.org/I152269853","https://openalex.org/I4210142748"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062494507","display_name":"Zhiquan Liu","orcid":"https://orcid.org/0000-0002-3934-2177"},"institutions":[{"id":"https://openalex.org/I159948400","display_name":"Jinan University","ror":"https://ror.org/02xe5ns62","country_code":"CN","type":"education","lineage":["https://openalex.org/I159948400"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiquan Liu","raw_affiliation_strings":["College of Cyber Security, Jinan University, Guangzhou, China"],"raw_orcid":"https://orcid.org/0000-0002-3934-2177","affiliations":[{"raw_affiliation_string":"College of Cyber Security, Jinan University, Guangzhou, China","institution_ids":["https://openalex.org/I159948400"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5001746807","display_name":"Kim\u2010Kwang Raymond Choo","orcid":"https://orcid.org/0000-0001-9208-5336"},"institutions":[{"id":"https://openalex.org/I45438204","display_name":"The University of Texas at San Antonio","ror":"https://ror.org/01kd65564","country_code":"US","type":"education","lineage":["https://openalex.org/I45438204"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kim-Kwang Raymond Choo","raw_affiliation_strings":["Department of Information Systems and Cyber Security, The University of Texas at San Antonio, San Antonio, TX, USA"],"raw_orcid":"https://orcid.org/0000-0001-9208-5336","affiliations":[{"raw_affiliation_string":"Department of Information Systems and Cyber Security, The University of Texas at San Antonio, San Antonio, TX, USA","institution_ids":["https://openalex.org/I45438204"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5001712801","display_name":"Robert H. Deng","orcid":"https://orcid.org/0000-0003-3491-8146"},"institutions":[{"id":"https://openalex.org/I79891267","display_name":"Singapore Management University","ror":"https://ror.org/050qmg959","country_code":"SG","type":"education","lineage":["https://openalex.org/I79891267"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Robert H. Deng","raw_affiliation_strings":["School of Information Systems, Singapore Management University, Bras Basah, Singapore","School of Information Systems, Singapore Management University, Singapore"],"raw_orcid":"https://orcid.org/0000-0003-3491-8146","affiliations":[{"raw_affiliation_string":"School of Information Systems, Singapore Management University, Bras Basah, Singapore","institution_ids":["https://openalex.org/I79891267"]},{"raw_affiliation_string":"School of Information Systems, Singapore Management University, Singapore","institution_ids":["https://openalex.org/I79891267"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5102885964"],"corresponding_institution_ids":["https://openalex.org/I149594827"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.36655916,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"20","issue":null,"first_page":"11936","last_page":"11949"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9896000027656555,"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"}},"topics":[{"id":"https://openalex.org/T11106","display_name":"Data Management and Algorithms","score":0.9896000027656555,"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"}},{"id":"https://openalex.org/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9782000184059143,"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":0.977400004863739,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.7114999890327454},{"id":"https://openalex.org/keywords/range-query","display_name":"Range query (database)","score":0.6852999925613403},{"id":"https://openalex.org/keywords/encryption","display_name":"Encryption","score":0.6062999963760376},{"id":"https://openalex.org/keywords/server","display_name":"Server","score":0.5389999747276306},{"id":"https://openalex.org/keywords/query-optimization","display_name":"Query optimization","score":0.5088000297546387},{"id":"https://openalex.org/keywords/trace","display_name":"TRACE (psycholinguistics)","score":0.4632999897003174},{"id":"https://openalex.org/keywords/spatial-query","display_name":"Spatial query","score":0.4065999984741211},{"id":"https://openalex.org/keywords/dimension","display_name":"Dimension (graph theory)","score":0.4034000039100647},{"id":"https://openalex.org/keywords/metric","display_name":"Metric (unit)","score":0.3993000090122223},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.3959999978542328}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8535000085830688},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7114999890327454},{"id":"https://openalex.org/C136736807","wikidata":"https://www.wikidata.org/wiki/Q818943","display_name":"Range query (database)","level":5,"score":0.6852999925613403},{"id":"https://openalex.org/C148730421","wikidata":"https://www.wikidata.org/wiki/Q141090","display_name":"Encryption","level":2,"score":0.6062999963760376},{"id":"https://openalex.org/C93996380","wikidata":"https://www.wikidata.org/wiki/Q44127","display_name":"Server","level":2,"score":0.5389999747276306},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5289000272750854},{"id":"https://openalex.org/C157692150","wikidata":"https://www.wikidata.org/wiki/Q2919848","display_name":"Query optimization","level":2,"score":0.5088000297546387},{"id":"https://openalex.org/C75291252","wikidata":"https://www.wikidata.org/wiki/Q1315756","display_name":"TRACE (psycholinguistics)","level":2,"score":0.4632999897003174},{"id":"https://openalex.org/C172722865","wikidata":"https://www.wikidata.org/wiki/Q2302053","display_name":"Spatial query","level":5,"score":0.4065999984741211},{"id":"https://openalex.org/C33676613","wikidata":"https://www.wikidata.org/wiki/Q13415176","display_name":"Dimension (graph theory)","level":2,"score":0.4034000039100647},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.3993000090122223},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3971000015735626},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.3959999978542328},{"id":"https://openalex.org/C99016210","wikidata":"https://www.wikidata.org/wiki/Q5488129","display_name":"Query expansion","level":2,"score":0.38769999146461487},{"id":"https://openalex.org/C203689450","wikidata":"https://www.wikidata.org/wiki/Q2302053","display_name":"Spatial database","level":3,"score":0.36899998784065247},{"id":"https://openalex.org/C159620131","wikidata":"https://www.wikidata.org/wiki/Q1938983","display_name":"Spatial analysis","level":2,"score":0.36640000343322754},{"id":"https://openalex.org/C75165309","wikidata":"https://www.wikidata.org/wiki/Q2258979","display_name":"Search engine indexing","level":2,"score":0.35929998755455017},{"id":"https://openalex.org/C118689300","wikidata":"https://www.wikidata.org/wiki/Q7978614","display_name":"Web query classification","level":4,"score":0.35670000314712524},{"id":"https://openalex.org/C24028149","wikidata":"https://www.wikidata.org/wiki/Q7094056","display_name":"Online aggregation","level":5,"score":0.3476000130176544},{"id":"https://openalex.org/C79974875","wikidata":"https://www.wikidata.org/wiki/Q483639","display_name":"Cloud computing","level":2,"score":0.34630000591278076},{"id":"https://openalex.org/C103278499","wikidata":"https://www.wikidata.org/wiki/Q254465","display_name":"Similarity (geometry)","level":3,"score":0.33809998631477356},{"id":"https://openalex.org/C2777735758","wikidata":"https://www.wikidata.org/wiki/Q817765","display_name":"Path (computing)","level":2,"score":0.3352999985218048},{"id":"https://openalex.org/C164120249","wikidata":"https://www.wikidata.org/wiki/Q995982","display_name":"Web search query","level":3,"score":0.3310999870300293},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3294000029563904},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.32749998569488525},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.32659998536109924},{"id":"https://openalex.org/C192028432","wikidata":"https://www.wikidata.org/wiki/Q845739","display_name":"Query language","level":2,"score":0.3203999996185303},{"id":"https://openalex.org/C2778755073","wikidata":"https://www.wikidata.org/wiki/Q10858537","display_name":"Scale (ratio)","level":2,"score":0.3199999928474426},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.31940001249313354},{"id":"https://openalex.org/C192939062","wikidata":"https://www.wikidata.org/wiki/Q104840822","display_name":"Sargable","level":4,"score":0.31310001015663147},{"id":"https://openalex.org/C96956885","wikidata":"https://www.wikidata.org/wiki/Q6138701","display_name":"RDF query language","level":5,"score":0.30559998750686646},{"id":"https://openalex.org/C201932085","wikidata":"https://www.wikidata.org/wiki/Q642514","display_name":"Online analytical processing","level":3,"score":0.29750001430511475},{"id":"https://openalex.org/C311688","wikidata":"https://www.wikidata.org/wiki/Q2393193","display_name":"Time complexity","level":2,"score":0.27810001373291016},{"id":"https://openalex.org/C24755975","wikidata":"https://www.wikidata.org/wiki/Q4943354","display_name":"Boolean conjunctive query","level":5,"score":0.2777999937534332},{"id":"https://openalex.org/C67186912","wikidata":"https://www.wikidata.org/wiki/Q367664","display_name":"Data modeling","level":2,"score":0.26260000467300415},{"id":"https://openalex.org/C130590232","wikidata":"https://www.wikidata.org/wiki/Q1671754","display_name":"Inverted index","level":3,"score":0.25940001010894775},{"id":"https://openalex.org/C54239708","wikidata":"https://www.wikidata.org/wiki/Q1329910","display_name":"View","level":3,"score":0.2572000026702881}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tifs.2025.3624950","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2025.3624950","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Information Forensics and Security","raw_type":"journal-article"},{"id":"pmh:oai:ink.library.smu.edu.sg:sis_research-11528","is_oa":true,"landing_page_url":"https://ink.library.smu.edu.sg/sis_research/10526","pdf_url":null,"source":{"id":"https://openalex.org/S4306401925","display_name":"Singapore Management University Institutional Knowledge (InK) (Singapore Management University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79891267","host_organization_name":"Singapore Management University","host_organization_lineage":["https://openalex.org/I79891267"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"https://doi.org/10.1109/TIFS.2025.3624950","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:ink.library.smu.edu.sg:sis_research-11528","is_oa":true,"landing_page_url":"https://ink.library.smu.edu.sg/sis_research/10526","pdf_url":null,"source":{"id":"https://openalex.org/S4306401925","display_name":"Singapore Management University Institutional Knowledge (InK) (Singapore Management University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I79891267","host_organization_name":"Singapore Management University","host_organization_lineage":["https://openalex.org/I79891267"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"https://doi.org/10.1109/TIFS.2025.3624950","raw_type":"Journal Article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1788352073","display_name":null,"funder_award_id":"QTZX24077","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G1819083007","display_name":null,"funder_award_id":"62125205","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4130109653","display_name":null,"funder_award_id":"2025NCSF02031","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G4365675440","display_name":null,"funder_award_id":"U23A20303","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6032661379","display_name":null,"funder_award_id":"62372493","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G776479033","display_name":null,"funder_award_id":"No. 62072361","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8060741714","display_name":null,"funder_award_id":"61932011","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G814938351","display_name":null,"funder_award_id":"2024YFB3108700","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G8488313276","display_name":null,"funder_award_id":"No. QTZX23091","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G8782580379","display_name":null,"funder_award_id":"No.62125205","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8904075259","display_name":null,"funder_award_id":"No. 2022GY-019","funder_id":"https://openalex.org/F4320336350","funder_display_name":"Key Research and Development Projects of Shaanxi Province"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null},{"id":"https://openalex.org/F4320336350","display_name":"Key Research and Development Projects of Shaanxi Province","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":39,"referenced_works":["https://openalex.org/W1510795740","https://openalex.org/W1589843374","https://openalex.org/W1909629542","https://openalex.org/W1977899329","https://openalex.org/W1979493600","https://openalex.org/W1980403034","https://openalex.org/W1981934656","https://openalex.org/W2073083495","https://openalex.org/W2078401527","https://openalex.org/W2116626915","https://openalex.org/W2118371392","https://openalex.org/W2126194848","https://openalex.org/W2147929033","https://openalex.org/W2154448764","https://openalex.org/W2169046918","https://openalex.org/W2282819945","https://openalex.org/W2317269620","https://openalex.org/W2493714127","https://openalex.org/W2535609233","https://openalex.org/W2576109540","https://openalex.org/W2606611168","https://openalex.org/W2778557896","https://openalex.org/W2805670944","https://openalex.org/W2889349423","https://openalex.org/W2913048961","https://openalex.org/W2951475536","https://openalex.org/W3033487065","https://openalex.org/W3045820751","https://openalex.org/W3046946952","https://openalex.org/W3096647266","https://openalex.org/W3160147183","https://openalex.org/W3179996071","https://openalex.org/W4205109197","https://openalex.org/W4205762045","https://openalex.org/W4212797794","https://openalex.org/W4249116724","https://openalex.org/W4293143820","https://openalex.org/W4381785594","https://openalex.org/W4403510269"],"related_works":[],"abstract_inverted_index":{"With":[0],"the":[1,48,70,159],"popularity":[2],"of":[3],"mobile":[4],"devices,":[5],"spatial-textual":[6,118],"trajectory":[7,23,65,87],"query":[8,57,136,160],"has":[9],"been":[10,26],"deployed":[11],"in":[12,47,63],"applications":[13],"such":[14,35],"as":[15,36],"trajectory-based":[16],"navigation":[17],"and":[18,33,51,56,95,133,149],"travel":[19],"route":[20],"recommendation.":[21],"Massive":[22],"data":[24,66],"have":[25],"outsourced":[27],"to":[28,153],"cloud":[29],"servers":[30],"for":[31],"storage":[32,55],"sharing":[34],"spatial":[37,49],"keyword":[38],"search.":[39],"However,":[40],"existing":[41],"solutions":[42],"only":[43],"support":[44],"similarity":[45],"queries":[46],"dimension":[50],"still":[52],"incur":[53],"high":[54],"costs,":[58],"which":[59,121],"cannot":[60],"scale":[61],"well":[62],"large-scale":[64],"scenarios.":[67],"To":[68],"solve":[69],"above":[71],"issues,":[72],"we":[73,100,139],"first":[74],"achieve":[75],"an":[76,103],"Efficient":[77,105],"Range":[78],"Query":[79,108],"over":[80,109],"Encrypted":[81,110],"Trajectory":[82,111],"Data":[83,112],"(ERT)":[84],"using":[85],"Douglas-Peucker":[86],"compression":[88],"algorithm,":[89],"random":[90],"matrix":[91],"multiplication,":[92],"filtering-verification":[93],"mechanism":[94],"polynomial":[96],"fitting":[97],"technology.":[98],"Then,":[99],"further":[101],"propose":[102],"enhanced":[104],"Spatial":[106],"Keyword":[107],"(ESKT)":[113],"by":[114,162],"constructing":[115],"a":[116],"unified":[117],"index":[119],"structure,":[120],"can":[122],"find":[123],"relevant":[124],"trajectories":[125],"that":[126,142,155],"are":[127,145],"within":[128],"some":[129],"arbitrary":[130],"geometric":[131],"range":[132],"contain":[134],"all":[135],"keywords.":[137],"Finally,":[138],"formally":[140],"prove":[141],"our":[143,156],"schemes":[144,157],"secure":[146],"against":[147],"chosen-plaintext-attack,":[148],"conduct":[150],"extensive":[151],"experiments":[152],"demonstrate":[154],"improve":[158],"efficiency":[161],"almost":[163],"100\u00d7":[164],"when":[165],"compared":[166],"with":[167],"state-of-the-art":[168],"solutions.":[169]},"counts_by_year":[],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-23T00:00:00"}