{"id":"https://openalex.org/W2599749253","doi":"https://doi.org/10.1109/tit.2017.2689028","title":"The Capacity of Private Information Retrieval","display_name":"The Capacity of Private Information Retrieval","publication_year":2017,"publication_date":"2017-03-31","ids":{"openalex":"https://openalex.org/W2599749253","doi":"https://doi.org/10.1109/tit.2017.2689028","mag":"2599749253"},"language":"en","primary_location":{"id":"doi:10.1109/tit.2017.2689028","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2017.2689028","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Theory","raw_type":"journal-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/A5016951190","display_name":"Hua Sun","orcid":"https://orcid.org/0000-0001-8777-7987"},"institutions":[{"id":"https://openalex.org/I204250578","display_name":"University of California, Irvine","ror":"https://ror.org/04gyf1771","country_code":"US","type":"education","lineage":["https://openalex.org/I204250578"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hua Sun","raw_affiliation_strings":["Center for Pervasive Communications and Computing, University of California at Irvine, Irvine, CA, USA"],"raw_orcid":"https://orcid.org/0000-0001-8777-7987","affiliations":[{"raw_affiliation_string":"Center for Pervasive Communications and Computing, University of California at Irvine, Irvine, CA, USA","institution_ids":["https://openalex.org/I204250578"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049553679","display_name":"Syed A. Jafar","orcid":"https://orcid.org/0000-0003-2038-2977"},"institutions":[{"id":"https://openalex.org/I204250578","display_name":"University of California, Irvine","ror":"https://ror.org/04gyf1771","country_code":"US","type":"education","lineage":["https://openalex.org/I204250578"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Syed Ali Jafar","raw_affiliation_strings":["Center for Pervasive Communications and Computing, University of California at Irvine, Irvine, CA, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Center for Pervasive Communications and Computing, University of California at Irvine, Irvine, CA, USA","institution_ids":["https://openalex.org/I204250578"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I204250578"],"apc_list":null,"apc_paid":null,"fwci":55.3815,"has_fulltext":false,"cited_by_count":469,"citation_normalized_percentile":{"value":0.99882036,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":100},"biblio":{"volume":"63","issue":"7","first_page":"4075","last_page":"4088"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10237","display_name":"Cryptography and Data Security","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/T10237","display_name":"Cryptography and Data Security","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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.994700014591217,"subfield":{"id":"https://openalex.org/subfields/1703","display_name":"Computational Theory and Mathematics"},"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":0.994700014591217,"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/computer-science","display_name":"Computer science","score":0.588594913482666},{"id":"https://openalex.org/keywords/private-information-retrieval","display_name":"Private information retrieval","score":0.5773964524269104},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.5605425834655762},{"id":"https://openalex.org/keywords/zero","display_name":"Zero (linguistics)","score":0.49112722277641296},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.44042131304740906},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.36032551527023315},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.34751808643341064},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.34669744968414307},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.29049551486968994},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.10370400547981262},{"id":"https://openalex.org/keywords/philosophy","display_name":"Philosophy","score":0.08090329170227051}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.588594913482666},{"id":"https://openalex.org/C99221444","wikidata":"https://www.wikidata.org/wiki/Q1532069","display_name":"Private information retrieval","level":2,"score":0.5773964524269104},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5605425834655762},{"id":"https://openalex.org/C2780813799","wikidata":"https://www.wikidata.org/wiki/Q3274237","display_name":"Zero (linguistics)","level":2,"score":0.49112722277641296},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.44042131304740906},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.36032551527023315},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.34751808643341064},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.34669744968414307},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.29049551486968994},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.10370400547981262},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.08090329170227051},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tit.2017.2689028","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2017.2689028","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Theory","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3093627806","display_name":"CIF: Small: Topological Interference Management","funder_award_id":"1317351","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"},{"id":"https://openalex.org/G6472740959","display_name":"CIF: Small: Fundamental Limits of Robust Interference Management -- Between the Extremes","funder_award_id":"1617504","funder_id":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation"}],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":42,"referenced_works":["https://openalex.org/W171567834","https://openalex.org/W1442529790","https://openalex.org/W1492012496","https://openalex.org/W1563286165","https://openalex.org/W1594962164","https://openalex.org/W1619839175","https://openalex.org/W1822223425","https://openalex.org/W1832668820","https://openalex.org/W1902486902","https://openalex.org/W1962818100","https://openalex.org/W1966060873","https://openalex.org/W1986070285","https://openalex.org/W1993830711","https://openalex.org/W1994260046","https://openalex.org/W2007208840","https://openalex.org/W2007725949","https://openalex.org/W2012882416","https://openalex.org/W2033498419","https://openalex.org/W2036602082","https://openalex.org/W2058863419","https://openalex.org/W2059865055","https://openalex.org/W2065265824","https://openalex.org/W2072335624","https://openalex.org/W2073346043","https://openalex.org/W2087207261","https://openalex.org/W2088404815","https://openalex.org/W2102024347","https://openalex.org/W2105406958","https://openalex.org/W2105537253","https://openalex.org/W2105831729","https://openalex.org/W2123051422","https://openalex.org/W2135438735","https://openalex.org/W2141420453","https://openalex.org/W2150307013","https://openalex.org/W2171844485","https://openalex.org/W2963939717","https://openalex.org/W2987365200","https://openalex.org/W3100195636","https://openalex.org/W3102868240","https://openalex.org/W6606989391","https://openalex.org/W6628471800","https://openalex.org/W6675865664"],"related_works":["https://openalex.org/W3013650182","https://openalex.org/W2087240539","https://openalex.org/W4249605382","https://openalex.org/W4313491656","https://openalex.org/W4236520801","https://openalex.org/W2105887828","https://openalex.org/W2989283631","https://openalex.org/W2122599759","https://openalex.org/W2800717388","https://openalex.org/W1975289146"],"abstract_inverted_index":{"In":[0],"the":[1,34,37,52,79,90,105,110,115,119],"private":[2],"information":[3,46,59],"retrieval":[4],"(PIR)":[5],"problem,":[6],"a":[7],"user":[8],"wishes":[9],"to":[10,41,108],"retrieve,":[11],"as":[12,14],"efficiently":[13],"possible,":[15],"one":[16],"out":[17],"of":[18,36,49,55,57,67,89,101,122],"K":[19,28,71],"messages":[20,72,102],"from":[21],"N":[22,74],"non-communicating":[23],"databases":[24],"(each":[25],"holds":[26],"all":[27],"messages)":[29],"while":[30],"revealing":[31],"nothing":[32],"about":[33],"identity":[35],"desired":[38,58],"message":[39,106],"index":[40],"any":[42,99],"individual":[43],"database.":[44],"The":[45],"theoretic":[47],"capacity":[48,81,91,117],"PIR":[50,80,116],"is":[51,82,94],"maximum":[53],"number":[54],"bits":[56],"that":[60,78,95],"can":[61],"be":[62],"privately":[63],"retrieved":[64],"per":[65],"bit":[66],"downloaded":[68],"information.":[69],"For":[70],"and":[73],"databases,":[75],"we":[76,97],"show":[77],"(1+1/N+1/N2+\u00b7":[83],"\u00b7":[84],"\u00b7+1/NK-1)-1.":[85],"A":[86],"remarkable":[87],"feature":[88],"achieving":[92],"scheme":[93,112],"if":[96],"eliminate":[98],"subset":[100,121],"(by":[103],"setting":[104],"symbols":[107],"zero),":[109],"resulting":[111],"also":[113],"achieves":[114],"for":[118],"remaining":[120],"messages.":[123]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":34},{"year":2024,"cited_by_count":38},{"year":2023,"cited_by_count":31},{"year":2022,"cited_by_count":49},{"year":2021,"cited_by_count":69},{"year":2020,"cited_by_count":65},{"year":2019,"cited_by_count":82},{"year":2018,"cited_by_count":74},{"year":2017,"cited_by_count":22},{"year":2016,"cited_by_count":2}],"updated_date":"2026-08-06T08:24:18.245995","created_date":"2025-10-10T00:00:00"}