{"id":"https://openalex.org/W3166549520","doi":"https://doi.org/10.1145/3450569.3463571","title":"Valued Authorization Policy Existence Problem","display_name":"Valued Authorization Policy Existence Problem","publication_year":2021,"publication_date":"2021-06-11","ids":{"openalex":"https://openalex.org/W3166549520","doi":"https://doi.org/10.1145/3450569.3463571","mag":"3166549520"},"language":"en","primary_location":{"id":"doi:10.1145/3450569.3463571","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3450569.3463571","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 26th ACM Symposium on Access Control Models and Technologies","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/A5109050799","display_name":"Jason Crampton","orcid":"https://orcid.org/0000-0003-2151-8426"},"institutions":[{"id":"https://openalex.org/I184558857","display_name":"Royal Holloway University of London","ror":"https://ror.org/04g2vpn86","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I184558857"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Jason Crampton","raw_affiliation_strings":["Royal Holloway, University of London, Egham, United Kingdom"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Royal Holloway, University of London, Egham, United Kingdom","institution_ids":["https://openalex.org/I184558857"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066848088","display_name":"Eduard Eiben","orcid":"https://orcid.org/0000-0003-2628-3435"},"institutions":[{"id":"https://openalex.org/I184558857","display_name":"Royal Holloway University of London","ror":"https://ror.org/04g2vpn86","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I184558857"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Eduard Eiben","raw_affiliation_strings":["Royal Holloway, University of London, Egham, United Kingdom"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Royal Holloway, University of London, Egham, United Kingdom","institution_ids":["https://openalex.org/I184558857"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044021493","display_name":"Gregory Gutin","orcid":"https://orcid.org/0000-0002-2377-0417"},"institutions":[{"id":"https://openalex.org/I184558857","display_name":"Royal Holloway University of London","ror":"https://ror.org/04g2vpn86","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I184558857"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Gregory Gutin","raw_affiliation_strings":["Royal Holloway, University of London, Egham, United Kingdom"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Royal Holloway, University of London, Egham, United Kingdom","institution_ids":["https://openalex.org/I184558857"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075467204","display_name":"Daniel Karapetyan","orcid":"https://orcid.org/0000-0003-4030-6525"},"institutions":[{"id":"https://openalex.org/I142263535","display_name":"University of Nottingham","ror":"https://ror.org/01ee9ar58","country_code":"GB","type":"education","lineage":["https://openalex.org/I142263535"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Daniel Karapetyan","raw_affiliation_strings":["University of Nottingham, Nottigham, United Kingdom"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Nottingham, Nottigham, United Kingdom","institution_ids":["https://openalex.org/I142263535"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5038073617","display_name":"Diptapriyo Majumdar","orcid":"https://orcid.org/0000-0003-2677-4648"},"institutions":[{"id":"https://openalex.org/I184558857","display_name":"Royal Holloway University of London","ror":"https://ror.org/04g2vpn86","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I184558857"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Diptapriyo Majumdar","raw_affiliation_strings":["Royal Holloway, University of London, Egham, United Kingdom"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Royal Holloway, University of London, Egham, United Kingdom","institution_ids":["https://openalex.org/I184558857"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.1441,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.83929413,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"156","issue":null,"first_page":"83","last_page":"94"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10927","display_name":"Access Control and Trust","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"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/T10927","display_name":"Access Control and Trust","score":0.9979000091552734,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"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/T10237","display_name":"Cryptography and Data Security","score":0.9940000176429749,"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/T10270","display_name":"Blockchain Technology Applications and Security","score":0.9667999744415283,"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/parameterized-complexity","display_name":"Parameterized complexity","score":0.7707889676094055},{"id":"https://openalex.org/keywords/relation","display_name":"Relation (database)","score":0.5412089824676514},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.5380051136016846},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5349193215370178},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5083011984825134},{"id":"https://openalex.org/keywords/base","display_name":"Base (topology)","score":0.4974232017993927},{"id":"https://openalex.org/keywords/authorization","display_name":"Authorization","score":0.44721555709838867},{"id":"https://openalex.org/keywords/satisfiability","display_name":"Satisfiability","score":0.43580561876296997},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.39811092615127563},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.386458158493042},{"id":"https://openalex.org/keywords/mathematical-economics","display_name":"Mathematical economics","score":0.35114747285842896},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.25849777460098267},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.1717929244041443},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.12157389521598816}],"concepts":[{"id":"https://openalex.org/C165464430","wikidata":"https://www.wikidata.org/wiki/Q1570441","display_name":"Parameterized complexity","level":2,"score":0.7707889676094055},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.5412089824676514},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.5380051136016846},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5349193215370178},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5083011984825134},{"id":"https://openalex.org/C42058472","wikidata":"https://www.wikidata.org/wiki/Q810214","display_name":"Base (topology)","level":2,"score":0.4974232017993927},{"id":"https://openalex.org/C108759981","wikidata":"https://www.wikidata.org/wiki/Q788590","display_name":"Authorization","level":2,"score":0.44721555709838867},{"id":"https://openalex.org/C168773769","wikidata":"https://www.wikidata.org/wiki/Q1350299","display_name":"Satisfiability","level":2,"score":0.43580561876296997},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.39811092615127563},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.386458158493042},{"id":"https://openalex.org/C144237770","wikidata":"https://www.wikidata.org/wiki/Q747534","display_name":"Mathematical economics","level":1,"score":0.35114747285842896},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.25849777460098267},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.1717929244041443},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.12157389521598816},{"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},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3450569.3463571","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3450569.3463571","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 26th ACM Symposium on Access Control Models and Technologies","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G8551038380","display_name":null,"funder_award_id":"RPG-2018-161","funder_id":"https://openalex.org/F4320319993","funder_display_name":"Leverhulme Trust"}],"funders":[{"id":"https://openalex.org/F4320319993","display_name":"Leverhulme Trust","ror":"https://ror.org/012mzw131"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W1507717186","https://openalex.org/W1531592115","https://openalex.org/W1964889053","https://openalex.org/W1970736012","https://openalex.org/W2030164717","https://openalex.org/W2038953226","https://openalex.org/W2052773530","https://openalex.org/W2107311933","https://openalex.org/W2108004830","https://openalex.org/W2110723603","https://openalex.org/W2111739159","https://openalex.org/W2116087731","https://openalex.org/W2166566648","https://openalex.org/W2418605222","https://openalex.org/W2744091895","https://openalex.org/W2893049765","https://openalex.org/W2902651753","https://openalex.org/W2914414140","https://openalex.org/W2964075550","https://openalex.org/W2971686860"],"related_works":["https://openalex.org/W2997738523","https://openalex.org/W2954121957","https://openalex.org/W1513991829","https://openalex.org/W2620174057","https://openalex.org/W2898879311","https://openalex.org/W2282042430","https://openalex.org/W3107385222","https://openalex.org/W2069792808","https://openalex.org/W2529276874","https://openalex.org/W2379813727"],"abstract_inverted_index":{"Problems":[0],"of":[1,29,53,67],"satisfiability":[2],"and":[3,44,62],"resiliency":[4],"in":[5,11],"workflows":[6],"have":[7],"been":[8],"widely":[9],"studied":[10],"the":[12,30,54,58,68],"last":[13],"decade.":[14],"Recent":[15],"work":[16],"has":[17],"shown":[18],"that":[19,64],"many":[20],"such":[21],"problems":[22],"may":[23,49],"be":[24],"viewed":[25],"as":[26],"special":[27],"cases":[28],"authorization":[31,39,60],"policy":[32,40],"existence":[33],"problem":[34],"(APEP),":[35],"which":[36],"returns":[37],"an":[38],"if":[41],"one":[42],"exists":[43],"\"No''":[45],"otherwise.":[46],"A":[47],"solution":[48],"not":[50],"exist":[51],"because":[52],"restrictions":[55],"imposed":[56],"by":[57],"base":[59],"relation":[61],"constraints":[63],"form":[65],"part":[66],"input":[69],"to":[70],"APEP.":[71]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}