{"id":"https://openalex.org/W3197534891","doi":"https://doi.org/10.1109/isit45174.2021.9517754","title":"On the Capacity of Latent Variable Private Information Retrieval","display_name":"On the Capacity of Latent Variable Private Information Retrieval","publication_year":2021,"publication_date":"2021-07-12","ids":{"openalex":"https://openalex.org/W3197534891","doi":"https://doi.org/10.1109/isit45174.2021.9517754","mag":"3197534891"},"language":"en","primary_location":{"id":"doi:10.1109/isit45174.2021.9517754","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit45174.2021.9517754","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Symposium on Information Theory (ISIT)","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/A5059808740","display_name":"Islam Samy","orcid":null},"institutions":[{"id":"https://openalex.org/I138006243","display_name":"University of Arizona","ror":"https://ror.org/03m2x1q45","country_code":"US","type":"education","lineage":["https://openalex.org/I138006243"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Islam Samy","raw_affiliation_strings":["University of Arizona,Department of Electrical and Computer Engineering","Department of Electrical and Computer Engineering, University of Arizona"],"affiliations":[{"raw_affiliation_string":"University of Arizona,Department of Electrical and Computer Engineering","institution_ids":["https://openalex.org/I138006243"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Arizona","institution_ids":["https://openalex.org/I138006243"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102965961","display_name":"Mohamed Adel Attia","orcid":"https://orcid.org/0000-0002-8226-9470"},"institutions":[{"id":"https://openalex.org/I138006243","display_name":"University of Arizona","ror":"https://ror.org/03m2x1q45","country_code":"US","type":"education","lineage":["https://openalex.org/I138006243"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mohamed A. Attia","raw_affiliation_strings":["University of Arizona,Department of Electrical and Computer Engineering","Department of Electrical and Computer Engineering, University of Arizona"],"affiliations":[{"raw_affiliation_string":"University of Arizona,Department of Electrical and Computer Engineering","institution_ids":["https://openalex.org/I138006243"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Arizona","institution_ids":["https://openalex.org/I138006243"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004316408","display_name":"Ravi Tandon","orcid":"https://orcid.org/0000-0002-6182-6098"},"institutions":[{"id":"https://openalex.org/I138006243","display_name":"University of Arizona","ror":"https://ror.org/03m2x1q45","country_code":"US","type":"education","lineage":["https://openalex.org/I138006243"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ravi Tandon","raw_affiliation_strings":["University of Arizona,Department of Electrical and Computer Engineering","Department of Electrical and Computer Engineering, University of Arizona"],"affiliations":[{"raw_affiliation_string":"University of Arizona,Department of Electrical and Computer Engineering","institution_ids":["https://openalex.org/I138006243"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Arizona","institution_ids":["https://openalex.org/I138006243"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063642902","display_name":"Loukas Lazos","orcid":"https://orcid.org/0000-0002-6187-7063"},"institutions":[{"id":"https://openalex.org/I138006243","display_name":"University of Arizona","ror":"https://ror.org/03m2x1q45","country_code":"US","type":"education","lineage":["https://openalex.org/I138006243"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Loukas Lazos","raw_affiliation_strings":["University of Arizona,Department of Electrical and Computer Engineering","Department of Electrical and Computer Engineering, University of Arizona"],"affiliations":[{"raw_affiliation_string":"University of Arizona,Department of Electrical and Computer Engineering","institution_ids":["https://openalex.org/I138006243"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Arizona","institution_ids":["https://openalex.org/I138006243"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5059808740"],"corresponding_institution_ids":["https://openalex.org/I138006243"],"apc_list":null,"apc_paid":null,"fwci":0.4195,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.69561205,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"1907","last_page":"1912"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","score":0.9998999834060669,"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/T10237","display_name":"Cryptography and Data Security","score":0.9998999834060669,"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/T10764","display_name":"Privacy-Preserving Technologies in Data","score":0.9977999925613403,"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/T11478","display_name":"Caching and Content Delivery","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/computer-science","display_name":"Computer science","score":0.6241413950920105},{"id":"https://openalex.org/keywords/converse","display_name":"Converse","score":0.6177948117256165},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.6121174097061157},{"id":"https://openalex.org/keywords/latent-variable","display_name":"Latent variable","score":0.5737770795822144},{"id":"https://openalex.org/keywords/matching","display_name":"Matching (statistics)","score":0.5432804822921753},{"id":"https://openalex.org/keywords/variable","display_name":"Variable (mathematics)","score":0.5225883722305298},{"id":"https://openalex.org/keywords/download","display_name":"Download","score":0.45356106758117676},{"id":"https://openalex.org/keywords/private-information-retrieval","display_name":"Private information retrieval","score":0.4193093776702881},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.416428804397583},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.36410802602767944},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2786668539047241},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2431638538837433},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.13005098700523376},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.12323707342147827},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.0901603102684021}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6241413950920105},{"id":"https://openalex.org/C2776809875","wikidata":"https://www.wikidata.org/wiki/Q1375963","display_name":"Converse","level":2,"score":0.6177948117256165},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.6121174097061157},{"id":"https://openalex.org/C51167844","wikidata":"https://www.wikidata.org/wiki/Q4422623","display_name":"Latent variable","level":2,"score":0.5737770795822144},{"id":"https://openalex.org/C165064840","wikidata":"https://www.wikidata.org/wiki/Q1321061","display_name":"Matching (statistics)","level":2,"score":0.5432804822921753},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.5225883722305298},{"id":"https://openalex.org/C2780154274","wikidata":"https://www.wikidata.org/wiki/Q7126717","display_name":"Download","level":2,"score":0.45356106758117676},{"id":"https://openalex.org/C99221444","wikidata":"https://www.wikidata.org/wiki/Q1532069","display_name":"Private information retrieval","level":2,"score":0.4193093776702881},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.416428804397583},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.36410802602767944},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2786668539047241},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2431638538837433},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.13005098700523376},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.12323707342147827},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0901603102684021},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","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:10.1109/isit45174.2021.9517754","is_oa":false,"landing_page_url":"https://doi.org/10.1109/isit45174.2021.9517754","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Symposium on Information Theory (ISIT)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G6295741123","display_name":null,"funder_award_id":"CNS-1715947,CAREER-1651492,CCF-2100013,CNS-1813401","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":51,"referenced_works":["https://openalex.org/W2007725949","https://openalex.org/W2150307013","https://openalex.org/W2260085643","https://openalex.org/W2531251918","https://openalex.org/W2536862651","https://openalex.org/W2593599278","https://openalex.org/W2599749253","https://openalex.org/W2763892133","https://openalex.org/W2768218911","https://openalex.org/W2774968492","https://openalex.org/W2798592476","https://openalex.org/W2802001504","https://openalex.org/W2805125937","https://openalex.org/W2809388578","https://openalex.org/W2887081391","https://openalex.org/W2888580722","https://openalex.org/W2888732914","https://openalex.org/W2919422837","https://openalex.org/W2961382438","https://openalex.org/W2962692592","https://openalex.org/W2963246398","https://openalex.org/W2963360430","https://openalex.org/W2963390572","https://openalex.org/W2963413537","https://openalex.org/W2963778357","https://openalex.org/W2963788456","https://openalex.org/W2963898134","https://openalex.org/W2964193197","https://openalex.org/W2969956479","https://openalex.org/W2975436019","https://openalex.org/W2976078580","https://openalex.org/W2976573449","https://openalex.org/W2999760042","https://openalex.org/W3007542335","https://openalex.org/W3013369639","https://openalex.org/W3046264682","https://openalex.org/W3046407039","https://openalex.org/W3081062654","https://openalex.org/W3081500754","https://openalex.org/W3084711314","https://openalex.org/W3093360177","https://openalex.org/W3105025471","https://openalex.org/W3105958450","https://openalex.org/W3122246509","https://openalex.org/W3197534891","https://openalex.org/W4205173135","https://openalex.org/W4287638930","https://openalex.org/W6745711271","https://openalex.org/W6775058408","https://openalex.org/W6781406371","https://openalex.org/W6784070974"],"related_works":["https://openalex.org/W2387449261","https://openalex.org/W2418518962","https://openalex.org/W2963377682","https://openalex.org/W2043159103","https://openalex.org/W2391769344","https://openalex.org/W2359260952","https://openalex.org/W4297790016","https://openalex.org/W2769269860","https://openalex.org/W2020701214","https://openalex.org/W4287585143"],"abstract_inverted_index":{"In":[0,64],"latent-variable":[1],"private":[2],"information":[3,24],"retrieval":[4],"(LV-PIR),":[5],"a":[6,26,32,79,94,99,108],"user":[7],"wishes":[8],"to":[9],"retrieve":[10],"one":[11],"out":[12],"of":[13,60,76,81],"<tex":[14,35],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[15,36,86,89],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$K$</tex>":[16],"messages":[17],"(indexed":[18],"by":[19,31],"\u03b8)":[20],"without":[21],"revealing":[22],"any":[23],"about":[25],"sensitive":[27],"latent":[28,33],"attribute":[29],"(modeled":[30],"variable":[34],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">$S$</tex>":[37],"correlated":[38],"with":[39],"\u03b8).":[40],"While":[41],"conventional":[42,144],"PIR":[43,145],"protocols,":[44],"which":[45,127],"keep":[46],"\u03b82private,":[47],"also":[48,141],"suffice":[49],"for":[50],"hiding":[51],"S,":[52],"they":[53],"can":[54,128],"be":[55,129],"too":[56],"costly":[57],"in":[58],"terms":[59],"the":[61,69,72,82,103,143],"download":[62,74,105],"overhead.":[63],"this":[65],"paper,":[66],"we":[67],"characterize":[68],"capacity":[70],"(equivalently,":[71],"optimal":[73,104,113],"cost)":[75],"LV-PIR":[77],"as":[78],"function":[80],"distribution":[83],"P":[84],"<inf":[85,88],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">S|</inf>":[87],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">\u03b8</inf>":[90],".":[91],"We":[92,132],"present":[93,134],"converse":[95],"proof":[96],"that":[97,140],"yields":[98],"lower":[100],"bound":[101],"on":[102],"cost,":[106],"and":[107,123],"matching":[109],"achievable":[110],"scheme.":[111],"The":[112],"scheme,":[114],"however,":[115],"involves":[116],"an":[117],"exhaustive":[118],"search":[119],"over":[120,124],"subset":[121],"queries":[122],"all":[125],"messages,":[126],"computationally":[130],"prohibitive.":[131],"further":[133],"two":[135],"low-complexity,":[136],"albeit":[137],"sub-optimal,":[138],"schemes":[139],"outperform":[142],"solution.":[146]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2021,"cited_by_count":2}],"updated_date":"2026-03-14T06:41:57.775601","created_date":"2025-10-10T00:00:00"}