{"id":"https://openalex.org/W2008857283","doi":"https://doi.org/10.1016/s0377-2217(00)00056-4","title":"Perfect, ideal and balanced matrices","display_name":"Perfect, ideal and balanced matrices","publication_year":2001,"publication_date":"2001-09-01","ids":{"openalex":"https://openalex.org/W2008857283","doi":"https://doi.org/10.1016/s0377-2217(00)00056-4","mag":"2008857283"},"language":"en","primary_location":{"id":"doi:10.1016/s0377-2217(00)00056-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0377-2217(00)00056-4","pdf_url":null,"source":{"id":"https://openalex.org/S103321696","display_name":"European Journal of Operational Research","issn_l":"0377-2217","issn":["0377-2217","1872-6860"],"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":"European Journal of Operational Research","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/A5091505775","display_name":"Michele Conforti","orcid":null},"institutions":[{"id":"https://openalex.org/I138689650","display_name":"University of Padua","ror":"https://ror.org/00240q980","country_code":"IT","type":"education","lineage":["https://openalex.org/I138689650"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Michele Conforti","raw_affiliation_strings":["Dipartimento di Matematica Pura ed Applicata, Universit\u00e0 di Padova, Via Belzoni 7, 35131 Padua, Italy"],"affiliations":[{"raw_affiliation_string":"Dipartimento di Matematica Pura ed Applicata, Universit\u00e0 di Padova, Via Belzoni 7, 35131 Padua, Italy","institution_ids":["https://openalex.org/I138689650"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014470090","display_name":"G\u00e9rard Cornu\u00e9jols","orcid":"https://orcid.org/0000-0002-3976-1021"},"institutions":[{"id":"https://openalex.org/I74973139","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33","country_code":"US","type":"education","lineage":["https://openalex.org/I74973139"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"G\u00e9rard Cornu\u00e9jols","raw_affiliation_strings":["Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA","Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA","institution_ids":["https://openalex.org/I74973139"]},{"raw_affiliation_string":"Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA#TAB#","institution_ids":["https://openalex.org/I74973139"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027416299","display_name":"Ajai Kapoor","orcid":null},"institutions":[{"id":"https://openalex.org/I74973139","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33","country_code":"US","type":"education","lineage":["https://openalex.org/I74973139"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ajai Kapoor","raw_affiliation_strings":["Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA","Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA#TAB#"],"affiliations":[{"raw_affiliation_string":"Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA","institution_ids":["https://openalex.org/I74973139"]},{"raw_affiliation_string":"Graduate School of Industrial Administration, Carnegie Mellon University, Schenley Park, Pittsburgh, PA 15213, USA#TAB#","institution_ids":["https://openalex.org/I74973139"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5077118262","display_name":"Kristina Vu\u0161kovi\u0107","orcid":"https://orcid.org/0000-0003-3286-3145"},"institutions":[{"id":"https://openalex.org/I130828816","display_name":"University of Leeds","ror":"https://ror.org/024mrxd33","country_code":"GB","type":"education","lineage":["https://openalex.org/I130828816"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Kristina Vu\u0161kovi\u0107","raw_affiliation_strings":["School of Computer Studies, University of Leeds, Leeds LS2 9JT, UK","School of Computer Studies, University of Leeds, Leeds, LS2 9JT, UK.#TAB#"],"affiliations":[{"raw_affiliation_string":"School of Computer Studies, University of Leeds, Leeds LS2 9JT, UK","institution_ids":["https://openalex.org/I130828816"]},{"raw_affiliation_string":"School of Computer Studies, University of Leeds, Leeds, LS2 9JT, UK.#TAB#","institution_ids":["https://openalex.org/I130828816"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5014470090"],"corresponding_institution_ids":["https://openalex.org/I74973139"],"apc_list":{"value":3290,"currency":"USD","value_usd":3290},"apc_paid":null,"fwci":1.1853,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.80318352,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"133","issue":"3","first_page":"455","last_page":"461"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10551","display_name":"Scheduling and Optimization Algorithms","score":0.9966999888420105,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10551","display_name":"Scheduling and Optimization Algorithms","score":0.9966999888420105,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.9908000230789185,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12176","display_name":"Optimization and Packing Problems","score":0.9746999740600586,"subfield":{"id":"https://openalex.org/subfields/2209","display_name":"Industrial and Manufacturing Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/ideal","display_name":"Ideal (ethics)","score":0.7405533194541931},{"id":"https://openalex.org/keywords/integer-programming","display_name":"Integer programming","score":0.6371743083000183},{"id":"https://openalex.org/keywords/connection","display_name":"Connection (principal bundle)","score":0.5899207592010498},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.5782349109649658},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.541759729385376},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5396620631217957},{"id":"https://openalex.org/keywords/integer","display_name":"Integer (computer science)","score":0.44098031520843506},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.40128082036972046},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.37374794483184814},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.3570953607559204},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.07541677355766296},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.051405876874923706}],"concepts":[{"id":"https://openalex.org/C2776639384","wikidata":"https://www.wikidata.org/wiki/Q840396","display_name":"Ideal (ethics)","level":2,"score":0.7405533194541931},{"id":"https://openalex.org/C56086750","wikidata":"https://www.wikidata.org/wiki/Q6042592","display_name":"Integer programming","level":2,"score":0.6371743083000183},{"id":"https://openalex.org/C13355873","wikidata":"https://www.wikidata.org/wiki/Q2920850","display_name":"Connection (principal bundle)","level":2,"score":0.5899207592010498},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5782349109649658},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.541759729385376},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5396620631217957},{"id":"https://openalex.org/C97137487","wikidata":"https://www.wikidata.org/wiki/Q729138","display_name":"Integer (computer science)","level":2,"score":0.44098031520843506},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.40128082036972046},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.37374794483184814},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.3570953607559204},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.07541677355766296},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.051405876874923706},{"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/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1016/s0377-2217(00)00056-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0377-2217(00)00056-4","pdf_url":null,"source":{"id":"https://openalex.org/S103321696","display_name":"European Journal of Operational Research","issn_l":"0377-2217","issn":["0377-2217","1872-6860"],"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":"European Journal of Operational Research","raw_type":"journal-article"},{"id":"pmh:oai:www.research.unipd.it:11577/3197573","is_oa":false,"landing_page_url":"http://hdl.handle.net/11577/3197573","pdf_url":null,"source":{"id":"https://openalex.org/S4377196283","display_name":"Research Padua  Archive (University of Padua)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I138689650","host_organization_name":"University of Padua","host_organization_lineage":["https://openalex.org/I138689650"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"},{"id":"https://openalex.org/F4320337345","display_name":"Office of Naval Research","ror":"https://ror.org/00rk2pe57"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W86044744","https://openalex.org/W1479863711","https://openalex.org/W1482179437","https://openalex.org/W1489062326","https://openalex.org/W1505776413","https://openalex.org/W1535899844","https://openalex.org/W1541044338","https://openalex.org/W1548435598","https://openalex.org/W1604158939","https://openalex.org/W1963547452","https://openalex.org/W1964119857","https://openalex.org/W1974811277","https://openalex.org/W1977620624","https://openalex.org/W1981295749","https://openalex.org/W1984205977","https://openalex.org/W1985284097","https://openalex.org/W1995303433","https://openalex.org/W1997137850","https://openalex.org/W1997998268","https://openalex.org/W1998259606","https://openalex.org/W2008264271","https://openalex.org/W2010856983","https://openalex.org/W2014091871","https://openalex.org/W2020816363","https://openalex.org/W2038721046","https://openalex.org/W2045938882","https://openalex.org/W2048762035","https://openalex.org/W2050038504","https://openalex.org/W2056260683","https://openalex.org/W2057441901","https://openalex.org/W2058408846","https://openalex.org/W2076018916","https://openalex.org/W2085151508","https://openalex.org/W2102299810","https://openalex.org/W2139973226","https://openalex.org/W2147407736","https://openalex.org/W2296084214","https://openalex.org/W2795674018","https://openalex.org/W4206780782","https://openalex.org/W4231086919","https://openalex.org/W4254177583","https://openalex.org/W4298262456","https://openalex.org/W6603474794","https://openalex.org/W6632801077"],"related_works":["https://openalex.org/W587735977","https://openalex.org/W1978142926","https://openalex.org/W3157395178","https://openalex.org/W2590472383","https://openalex.org/W1925942709","https://openalex.org/W2047683846","https://openalex.org/W2044902158","https://openalex.org/W2082154838","https://openalex.org/W2109912052","https://openalex.org/W1711527768"],"abstract_inverted_index":null,"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}