{"id":"https://openalex.org/W2042507613","doi":"https://doi.org/10.1137/0805020","title":"Ladders for Travelling Salesmen","display_name":"Ladders for Travelling Salesmen","publication_year":1995,"publication_date":"1995-05-01","ids":{"openalex":"https://openalex.org/W2042507613","doi":"https://doi.org/10.1137/0805020","mag":"2042507613"},"language":"en","primary_location":{"id":"doi:10.1137/0805020","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0805020","pdf_url":null,"source":{"id":"https://openalex.org/S928796702","display_name":"SIAM Journal on Optimization","issn_l":"1052-6234","issn":["1052-6234","1095-7189"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Optimization","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/A5025268829","display_name":"Sylvia Boyd","orcid":"https://orcid.org/0000-0001-7884-0219"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Sylvia C. Boyd","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113489094","display_name":"William H. Cunningham","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"William H. Cunningham","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013482862","display_name":"Maurice Queyranne","orcid":"https://orcid.org/0000-0001-7043-788X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Maurice Queyranne","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5000024730","display_name":"Yaoguang Wang","orcid":"https://orcid.org/0000-0003-0635-331X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yaoguang Wang","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.046,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.75951266,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"5","issue":"2","first_page":"408","last_page":"420"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.987500011920929,"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"}},"topics":[{"id":"https://openalex.org/T11797","display_name":"graph theory and CDMA systems","score":0.987500011920929,"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/T10567","display_name":"Vehicle Routing Optimization Methods","score":0.986299991607666,"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/T10374","display_name":"Advanced Graph Theory Research","score":0.9818000197410583,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/travelling-salesman-problem","display_name":"Travelling salesman problem","score":0.8586448431015015},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.757067084312439},{"id":"https://openalex.org/keywords/variety","display_name":"Variety (cybernetics)","score":0.7331421971321106},{"id":"https://openalex.org/keywords/polytope","display_name":"Polytope","score":0.7179630994796753},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.6716182231903076},{"id":"https://openalex.org/keywords/facet","display_name":"Facet (psychology)","score":0.6430478096008301},{"id":"https://openalex.org/keywords/rank","display_name":"Rank (graph theory)","score":0.6155639290809631},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.5778394937515259},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.34927046298980713},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.20696070790290833},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.15296629071235657},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.05658596754074097}],"concepts":[{"id":"https://openalex.org/C175859090","wikidata":"https://www.wikidata.org/wiki/Q322212","display_name":"Travelling salesman problem","level":2,"score":0.8586448431015015},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.757067084312439},{"id":"https://openalex.org/C136197465","wikidata":"https://www.wikidata.org/wiki/Q1729295","display_name":"Variety (cybernetics)","level":2,"score":0.7331421971321106},{"id":"https://openalex.org/C145691206","wikidata":"https://www.wikidata.org/wiki/Q747980","display_name":"Polytope","level":2,"score":0.7179630994796753},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.6716182231903076},{"id":"https://openalex.org/C43122875","wikidata":"https://www.wikidata.org/wiki/Q5428522","display_name":"Facet (psychology)","level":4,"score":0.6430478096008301},{"id":"https://openalex.org/C164226766","wikidata":"https://www.wikidata.org/wiki/Q7293202","display_name":"Rank (graph theory)","level":2,"score":0.6155639290809631},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.5778394937515259},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.34927046298980713},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.20696070790290833},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.15296629071235657},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.05658596754074097},{"id":"https://openalex.org/C2865642","wikidata":"https://www.wikidata.org/wiki/Q378132","display_name":"Big Five personality traits","level":3,"score":0.0},{"id":"https://openalex.org/C77805123","wikidata":"https://www.wikidata.org/wiki/Q161272","display_name":"Social psychology","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C187288502","wikidata":"https://www.wikidata.org/wiki/Q641118","display_name":"Personality","level":2,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1137/0805020","is_oa":false,"landing_page_url":"https://doi.org/10.1137/0805020","pdf_url":null,"source":{"id":"https://openalex.org/S928796702","display_name":"SIAM Journal on Optimization","issn_l":"1052-6234","issn":["1052-6234","1095-7189"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320508","host_organization_name":"Society for Industrial and Applied Mathematics","host_organization_lineage":["https://openalex.org/P4310320508"],"host_organization_lineage_names":["Society for Industrial and Applied Mathematics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SIAM Journal on Optimization","raw_type":"journal-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.44.204","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.44.204","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.math.uwaterloo.ca/~whcunnin/ladder.ps","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.589.2882","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.589.2882","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.math.uwaterloo.ca/~whcunnin/ladder.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","display_name":"Reduced inequalities","score":0.6299999952316284}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W1540760152","https://openalex.org/W2029242918","https://openalex.org/W2049591070","https://openalex.org/W2067684024","https://openalex.org/W2069255695","https://openalex.org/W2087508734","https://openalex.org/W2145243417","https://openalex.org/W2161305900"],"related_works":["https://openalex.org/W2095646234","https://openalex.org/W1976967559","https://openalex.org/W1985101250","https://openalex.org/W1964127155","https://openalex.org/W2020428943","https://openalex.org/W2071242430","https://openalex.org/W2099246938","https://openalex.org/W1993839665","https://openalex.org/W2021199373","https://openalex.org/W3009916709"],"abstract_inverted_index":{"We":[0,23],"introduce":[1],"a":[2],"new":[3],"class":[4],"of":[5,18],"valid":[6],"inequalities":[7,27],"for":[8],"the":[9,19],"symmetric":[10],"travelling":[11],"salesman":[12],"polytope.":[13],"The":[14],"family":[15],"is":[16],"not":[17],"common":[20],"handle-tooth":[21],"variety.":[22],"show":[24],"that":[25],"these":[26],"are":[28],"all":[29],"facet-inducing":[30],"and":[31],"have":[32],"Chv\u00e1tal":[33],"rank":[34],"2.":[35]},"counts_by_year":[{"year":2019,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
