{"id":"https://openalex.org/W2035632654","doi":"https://doi.org/10.1016/0022-0000(81)90022-2","title":"On minimal augmentation of a graph to obtain an interval graph","display_name":"On minimal augmentation of a graph to obtain an interval graph","publication_year":1981,"publication_date":"1981-02-01","ids":{"openalex":"https://openalex.org/W2035632654","doi":"https://doi.org/10.1016/0022-0000(81)90022-2","mag":"2035632654"},"language":"en","primary_location":{"id":"doi:10.1016/0022-0000(81)90022-2","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0022-0000(81)90022-2","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/A5109154058","display_name":"Tatsuo Ohtsuki","orcid":null},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Tatsuo Ohtsuki","raw_affiliation_strings":["Department of Electronics and Communication Engineering, Waseda University, Shinjuku-ku, Tokyo 160, Japan"],"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, Waseda University, Shinjuku-ku, Tokyo 160, Japan","institution_ids":["https://openalex.org/I150744194"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109147651","display_name":"Hajimu Mori","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hajimu Mori","raw_affiliation_strings":["C & C Systems Research Laboratories, Nippon Electric Co., Miyasaki, Kawasaki 213, Japan"],"affiliations":[{"raw_affiliation_string":"C & C Systems Research Laboratories, Nippon Electric Co., Miyasaki, Kawasaki 213, Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086884093","display_name":"Toshinobu Kashiwabara","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"The University of Osaka","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshinobu Kashiwabara","raw_affiliation_strings":["Department of Information and Computer Sciences, Osaka University, Toyonaka, Osaka 560, Japan","Dept. of Information and Computer Sciences, Osaka Univ., Toyonaka, Osaka 560, Japan"],"affiliations":[{"raw_affiliation_string":"Department of Information and Computer Sciences, Osaka University, Toyonaka, Osaka 560, Japan","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Dept. of Information and Computer Sciences, Osaka Univ., Toyonaka, Osaka 560, Japan","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111533475","display_name":"Toshio Fujisawa","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"The University of Osaka","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshio Fujisawa","raw_affiliation_strings":["Department of Information and Computer Sciences, Osaka University, Toyonaka, Osaka 560, Japan","Dept. of Information and Computer Sciences, Osaka Univ., Toyonaka, Osaka 560, Japan"],"affiliations":[{"raw_affiliation_string":"Department of Information and Computer Sciences, Osaka University, Toyonaka, Osaka 560, Japan","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Dept. of Information and Computer Sciences, Osaka Univ., Toyonaka, Osaka 560, Japan","institution_ids":["https://openalex.org/I98285908"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5109154058"],"corresponding_institution_ids":["https://openalex.org/I150744194"],"apc_list":{"value":2520,"currency":"USD","value_usd":2520},"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":23,"citation_normalized_percentile":{"value":0.18317042,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"22","issue":"1","first_page":"60","last_page":"97"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.995199978351593,"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"}},"topics":[{"id":"https://openalex.org/T10374","display_name":"Advanced Graph Theory Research","score":0.995199978351593,"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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9805999994277954,"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/T11596","display_name":"Constraint Satisfaction and Optimization","score":0.9758999943733215,"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/strength-of-a-graph","display_name":"Strength of a graph","score":0.5679798722267151},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5607473850250244},{"id":"https://openalex.org/keywords/null-graph","display_name":"Null graph","score":0.5535728931427002},{"id":"https://openalex.org/keywords/complement-graph","display_name":"Complement graph","score":0.5527464747428894},{"id":"https://openalex.org/keywords/butterfly-graph","display_name":"Butterfly graph","score":0.5069522857666016},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.506918728351593},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.4868885576725006},{"id":"https://openalex.org/keywords/line-graph","display_name":"Line graph","score":0.4700514078140259},{"id":"https://openalex.org/keywords/voltage-graph","display_name":"Voltage graph","score":0.442461222410202},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.43225905299186707},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3367680311203003}],"concepts":[{"id":"https://openalex.org/C19332903","wikidata":"https://www.wikidata.org/wiki/Q7623247","display_name":"Strength of a graph","level":5,"score":0.5679798722267151},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5607473850250244},{"id":"https://openalex.org/C17169500","wikidata":"https://www.wikidata.org/wiki/Q3033506","display_name":"Null graph","level":5,"score":0.5535728931427002},{"id":"https://openalex.org/C168291704","wikidata":"https://www.wikidata.org/wiki/Q902252","display_name":"Complement graph","level":5,"score":0.5527464747428894},{"id":"https://openalex.org/C18819970","wikidata":"https://www.wikidata.org/wiki/Q3035340","display_name":"Butterfly graph","level":5,"score":0.5069522857666016},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.506918728351593},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.4868885576725006},{"id":"https://openalex.org/C203776342","wikidata":"https://www.wikidata.org/wiki/Q1378376","display_name":"Line graph","level":3,"score":0.4700514078140259},{"id":"https://openalex.org/C22149727","wikidata":"https://www.wikidata.org/wiki/Q7940747","display_name":"Voltage graph","level":4,"score":0.442461222410202},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.43225905299186707},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3367680311203003}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/0022-0000(81)90022-2","is_oa":false,"landing_page_url":"https://doi.org/10.1016/0022-0000(81)90022-2","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":18,"referenced_works":["https://openalex.org/W1492720468","https://openalex.org/W1514415888","https://openalex.org/W1517921658","https://openalex.org/W1655990431","https://openalex.org/W1993323467","https://openalex.org/W2011039300","https://openalex.org/W2024491681","https://openalex.org/W2037106315","https://openalex.org/W2056976531","https://openalex.org/W2063410295","https://openalex.org/W2076455760","https://openalex.org/W2086119402","https://openalex.org/W2089465933","https://openalex.org/W2089651609","https://openalex.org/W2097774291","https://openalex.org/W3133279294","https://openalex.org/W6648532534","https://openalex.org/W6674540954"],"related_works":["https://openalex.org/W2278094798","https://openalex.org/W2900680118","https://openalex.org/W3175246409","https://openalex.org/W2014355235","https://openalex.org/W2065459306","https://openalex.org/W2793949464","https://openalex.org/W2048112267","https://openalex.org/W2071056049","https://openalex.org/W3209476063","https://openalex.org/W2108781142"],"abstract_inverted_index":null,"counts_by_year":[{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-03-10T14:07:55.174380","created_date":"2025-10-10T00:00:00"}
