{"id":"https://openalex.org/W2068873365","doi":"https://doi.org/10.1016/0022-0000(89)90017-2","title":"Strong nondeterministic turing reduction\u2014A technique for proving intractability","display_name":"Strong nondeterministic turing reduction\u2014A technique for proving intractability","publication_year":1989,"publication_date":"1989-08-01","ids":{"openalex":"https://openalex.org/W2068873365","doi":"https://doi.org/10.1016/0022-0000(89)90017-2","mag":"2068873365"},"language":"en","primary_location":{"id":"doi:10.1016/0022-0000(89)90017-2","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0022-0000(89)90017-2","pdf_url":null,"source":{"id":"https://openalex.org/S141020589","display_name":"Journal of Computer and System Sciences","issn_l":"0022-0000","issn":["0022-0000","1090-2724"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Computer and System Sciences","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/A5111809819","display_name":"Moon Jung Chung","orcid":null},"institutions":[{"id":"https://openalex.org/I87216513","display_name":"Michigan State University","ror":"https://ror.org/05hs6h993","country_code":"US","type":"education","lineage":["https://openalex.org/I87216513"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Moon Jung Chung","raw_affiliation_strings":["Computer Science Department, Michigan State University, East Lansing, Michigan 48824 USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computer Science Department, Michigan State University, East Lansing, Michigan 48824 USA","institution_ids":["https://openalex.org/I87216513"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065615032","display_name":"Bala Ravikumar","orcid":null},"institutions":[{"id":"https://openalex.org/I17626003","display_name":"University of Rhode Island","ror":"https://ror.org/013ckk937","country_code":"US","type":"education","lineage":["https://openalex.org/I17626003"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"B. Ravikumar","raw_affiliation_strings":["Department of Computer Science, University of Rhode Island, Kingston, Rhode Island 02881, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Rhode Island, Kingston, Rhode Island 02881, USA","institution_ids":["https://openalex.org/I17626003"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2520,"currency":"USD","value_usd":2520},"apc_paid":null,"fwci":3.0484,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.92213069,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"39","issue":"1","first_page":"2","last_page":"20"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11269","display_name":"Algorithms and Data Compression","score":0.9919999837875366,"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/T11269","display_name":"Algorithms and Data Compression","score":0.9919999837875366,"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/T10260","display_name":"Software Engineering Research","score":0.991599977016449,"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"}},{"id":"https://openalex.org/T10126","display_name":"Logic, programming, and type systems","score":0.9883999824523926,"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/reduction","display_name":"Reduction (mathematics)","score":0.7883337736129761},{"id":"https://openalex.org/keywords/nondeterministic-algorithm","display_name":"Nondeterministic algorithm","score":0.6836251616477966},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5940001010894775},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.43620264530181885},{"id":"https://openalex.org/keywords/turing","display_name":"Turing","score":0.4261655807495117},{"id":"https://openalex.org/keywords/np","display_name":"NP","score":0.42398735880851746},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4137517213821411},{"id":"https://openalex.org/keywords/turing-machine","display_name":"Turing machine","score":0.40068501234054565},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.36863696575164795},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.14093580842018127},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.0838003158569336}],"concepts":[{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.7883337736129761},{"id":"https://openalex.org/C176181172","wikidata":"https://www.wikidata.org/wiki/Q3490301","display_name":"Nondeterministic algorithm","level":2,"score":0.6836251616477966},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5940001010894775},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.43620264530181885},{"id":"https://openalex.org/C9870796","wikidata":"https://www.wikidata.org/wiki/Q490481","display_name":"Turing","level":2,"score":0.4261655807495117},{"id":"https://openalex.org/C91331118","wikidata":"https://www.wikidata.org/wiki/Q628036","display_name":"NP","level":4,"score":0.42398735880851746},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4137517213821411},{"id":"https://openalex.org/C29248071","wikidata":"https://www.wikidata.org/wiki/Q163310","display_name":"Turing machine","level":3,"score":0.40068501234054565},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.36863696575164795},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.14093580842018127},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.0838003158569336},{"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:10.1016/0022-0000(89)90017-2","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0022-0000(89)90017-2","pdf_url":null,"source":{"id":"https://openalex.org/S141020589","display_name":"Journal of Computer and System Sciences","issn_l":"0022-0000","issn":["0022-0000","1090-2724"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Computer and System Sciences","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1970465162","https://openalex.org/W1986203294","https://openalex.org/W2031740555","https://openalex.org/W2036265926","https://openalex.org/W2041317738","https://openalex.org/W2059260192","https://openalex.org/W2066356146","https://openalex.org/W2401610261","https://openalex.org/W2752853835","https://openalex.org/W2807988286","https://openalex.org/W4210296975","https://openalex.org/W4255268306","https://openalex.org/W6644040475","https://openalex.org/W6659573362"],"related_works":["https://openalex.org/W1523547988","https://openalex.org/W2119244842","https://openalex.org/W4285436350","https://openalex.org/W2090113742","https://openalex.org/W4324016496","https://openalex.org/W2215138167","https://openalex.org/W1531056015","https://openalex.org/W4254404873","https://openalex.org/W4231495498","https://openalex.org/W2147305777"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}