{"id":"https://openalex.org/W2979470511","doi":"https://doi.org/10.1002/net.21908","title":"Complexity of inventory routing problems when routing is easy","display_name":"Complexity of inventory routing problems when routing is easy","publication_year":2019,"publication_date":"2019-10-10","ids":{"openalex":"https://openalex.org/W2979470511","doi":"https://doi.org/10.1002/net.21908","mag":"2979470511"},"language":"en","primary_location":{"id":"doi:10.1002/net.21908","doi":"https://doi.org/10.1002/net.21908","is_oa":true,"landing_page_url":"https://doi.org/10.1002/net.21908","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/net.21908","source":{"id":"https://openalex.org/S191798613","display_name":"Networks","issn_l":"0028-3045","issn":["0028-3045","1097-0037"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","ccf-c","cwts-core","dongbi-b","jufo-2","norway-1","poland-140","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Networks","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/net.21908","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5001847815","display_name":"Annelieke C. Baller","orcid":"https://orcid.org/0000-0002-3826-0057","observed_orcids":["https://orcid.org/0000-0002-3826-0057"]},"institutions":[{"id":"https://openalex.org/I865915315","display_name":"Vrije Universiteit Amsterdam","ror":"https://ror.org/008xxew50","country_code":"NL","type":"education","lineage":["https://openalex.org/I865915315"]}],"countries":["NL"],"is_corresponding":true,"raw_author_name":"Annelieke C. Baller","raw_affiliation_strings":["Department of Supply Chain Analytics Vrije Universiteit Amsterdam  Amsterdam The Netherlands","VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)"],"raw_orcid":"https://orcid.org/0000-0002-3826-0057","affiliations":[{"raw_affiliation_string":"Department of Supply Chain Analytics Vrije Universiteit Amsterdam  Amsterdam The Netherlands","institution_ids":["https://openalex.org/I865915315"]},{"raw_affiliation_string":"VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)","institution_ids":["https://openalex.org/I865915315"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044760370","display_name":"Martijn van Ee","orcid":"https://orcid.org/0000-0002-7724-8990","observed_orcids":["https://orcid.org/0000-0002-7724-8990"]},"institutions":[{"id":"https://openalex.org/I4210119716","display_name":"Netherlands Defence Academy","ror":"https://ror.org/02dnvjf04","country_code":"NL","type":"facility","lineage":["https://openalex.org/I4210094335","https://openalex.org/I4210119716","https://openalex.org/I4210140876"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Martijn van Ee","raw_affiliation_strings":["Faculty of Military Sciences Netherlands Defence Academy Den Helder The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Faculty of Military Sciences Netherlands Defence Academy Den Helder The Netherlands","institution_ids":["https://openalex.org/I4210119716"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048847118","display_name":"Maaike Hoogeboom","orcid":"https://orcid.org/0000-0001-8512-0762","observed_orcids":["https://orcid.org/0000-0001-8512-0762"]},"institutions":[{"id":"https://openalex.org/I865915315","display_name":"Vrije Universiteit Amsterdam","ror":"https://ror.org/008xxew50","country_code":"NL","type":"education","lineage":["https://openalex.org/I865915315"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Maaike Hoogeboom","raw_affiliation_strings":["Department of Supply Chain Analytics Vrije Universiteit Amsterdam  Amsterdam The Netherlands","VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Supply Chain Analytics Vrije Universiteit Amsterdam  Amsterdam The Netherlands","institution_ids":["https://openalex.org/I865915315"]},{"raw_affiliation_string":"VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)","institution_ids":["https://openalex.org/I865915315"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044184077","display_name":"Leen Stougie","orcid":"https://orcid.org/0000-0001-6938-8902","observed_orcids":["https://orcid.org/0000-0001-6938-8902"]},"institutions":[{"id":"https://openalex.org/I1326498283","display_name":"Institut national de recherche en sciences et technologies du num\u00e9rique","ror":"https://ror.org/02kvxyf05","country_code":"FR","type":"government","lineage":["https://openalex.org/I1326498283"]},{"id":"https://openalex.org/I1341640284","display_name":"Centrum Wiskunde & Informatica","ror":"https://ror.org/00x7ekv49","country_code":"NL","type":"facility","lineage":["https://openalex.org/I1341640284","https://openalex.org/I2800991832","https://openalex.org/I4405262988"]},{"id":"https://openalex.org/I865915315","display_name":"Vrije Universiteit Amsterdam","ror":"https://ror.org/008xxew50","country_code":"NL","type":"education","lineage":["https://openalex.org/I865915315"]}],"countries":["FR","NL"],"is_corresponding":false,"raw_author_name":"Leen Stougie","raw_affiliation_strings":["Centrum voor Wiskunde en Informatica (CWI), INRIA\u2010Erable, Department of Econometrics and Operations Research Vrije Universiteit Amsterdam The Netherlands","VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centrum voor Wiskunde en Informatica (CWI), INRIA\u2010Erable, Department of Econometrics and Operations Research Vrije Universiteit Amsterdam The Netherlands","institution_ids":["https://openalex.org/I1326498283","https://openalex.org/I1341640284","https://openalex.org/I865915315"]},{"raw_affiliation_string":"VU - Vrije Universiteit Amsterdam [Amsterdam] (De Boelelaan 1105 1081 HV Amsterdam - Netherlands)","institution_ids":["https://openalex.org/I865915315"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5001847815"],"corresponding_institution_ids":["https://openalex.org/I865915315"],"apc_list":{"value":2500,"currency":"USD","value_usd":2500},"apc_paid":{"value":2500,"currency":"USD","value_usd":2500},"fwci":1.05,"has_fulltext":true,"cited_by_count":13,"citation_normalized_percentile":{"value":0.77963986,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"75","issue":"2","first_page":"113","last_page":"123"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10567","display_name":"Vehicle Routing Optimization Methods","score":0.9955999851226807,"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/T10567","display_name":"Vehicle Routing Optimization Methods","score":0.9955999851226807,"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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.0034000000450760126,"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/T10551","display_name":"Scheduling and Optimization Algorithms","score":9.999999747378752e-05,"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/inventory-routing-problem","display_name":"inventory routing problem","score":0.9959999918937683},{"id":"https://openalex.org/keywords/computational-complexity","display_name":"computational complexity","score":0.9279999732971191},{"id":"https://openalex.org/keywords/np-hardness","display_name":"NP-hardness","score":0.8610000014305115},{"id":"https://openalex.org/keywords/strong-np-hardness","display_name":"strong NP-hardness","score":0.8460000157356262},{"id":"https://openalex.org/keywords/dynamic-programming-algorithm","display_name":"dynamic programming algorithm","score":0.6800000071525574},{"id":"https://openalex.org/keywords/traveling-salesman-problem","display_name":"traveling salesman problem","score":0.7239999771118164},{"id":"https://openalex.org/keywords/service-time","display_name":"service time","score":0.6449999809265137},{"id":"https://openalex.org/keywords/planning-horizon","display_name":"planning horizon","score":0.8650000095367432},{"id":"https://openalex.org/keywords/rays","display_name":"rays","score":0.4320000112056732}],"concepts":[{"id":"https://openalex.org/C175859090","wikidata":"https://www.wikidata.org/wiki/Q322212","display_name":"Travelling salesman problem","level":2,"score":0.7393884658813477},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5894696712493896},{"id":"https://openalex.org/C28761237","wikidata":"https://www.wikidata.org/wiki/Q7805321","display_name":"Time horizon","level":2,"score":0.5852310061454773},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.546773374080658},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.534386396408081},{"id":"https://openalex.org/C311688","wikidata":"https://www.wikidata.org/wiki/Q2393193","display_name":"Time complexity","level":2,"score":0.4955242872238159},{"id":"https://openalex.org/C206729178","wikidata":"https://www.wikidata.org/wiki/Q2271896","display_name":"Scheduling (production processes)","level":2,"score":0.4840197265148163},{"id":"https://openalex.org/C123784306","wikidata":"https://www.wikidata.org/wiki/Q944041","display_name":"Vehicle routing problem","level":3,"score":0.4664570391178131},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.38208919763565063},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.19412630796432495},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.10146808624267578}],"mesh":[],"locations_count":7,"locations":[{"id":"doi:10.1002/net.21908","doi":"https://doi.org/10.1002/net.21908","is_oa":true,"landing_page_url":"https://doi.org/10.1002/net.21908","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/net.21908","source":{"id":"https://openalex.org/S191798613","display_name":"Networks","issn_l":"0028-3045","issn":["0028-3045","1097-0037"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","ccf-c","cwts-core","dongbi-b","jufo-2","norway-1","poland-140","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Networks","raw_type":"journal-article"},{"id":"pmh:oai:research.vu.nl:openaire/6e1946ae-956c-47ec-83c5-abf62b2af100","doi":null,"is_oa":true,"landing_page_url":"https://research.vu.nl/en/publications/6e1946ae-956c-47ec-83c5-abf62b2af100","pdf_url":null,"source":{"id":"https://openalex.org/S4306401107","display_name":"VU Research Portal","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I865915315","host_organization_name":"Vrije Universiteit Amsterdam","host_organization_lineage":["https://openalex.org/I865915315"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Baller, A C, van Ee, M, Hoogeboom, M & Stougie, L 2020, 'Complexity of inventory routing problems when routing is easy', Networks, vol. 75, no. 2, pp. 113-123. https://doi.org/10.1002/net.21908","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:cwi.nl:28965","doi":null,"is_oa":true,"landing_page_url":"https://ir.cwi.nl/pub/28965","pdf_url":"https://ir.cwi.nl/pub/28965/Baller_et_al-2019-Networks.pdf","source":{"id":"https://openalex.org/S7407055335","display_name":"Centrum Wiskunde & Informatica (CWI), the national research institute for mathematics and computer science in the Netherlands","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Networks vol. 75 no. 2, pp. 113-123","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:cwi:oai:cwi.nl:28965","doi":null,"is_oa":true,"landing_page_url":"https://ir.cwi.nl/pub/28965","pdf_url":null,"source":{"id":"https://openalex.org/S4306401843","display_name":"Data Archiving and Networked Services (DANS)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1322597698","host_organization_name":"Royal Netherlands Academy of Arts and Sciences","host_organization_lineage":["https://openalex.org/I1322597698"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Networks, 75(2), 113 - 123","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:hbo:oai:hbokennisbank.nl:sharekit_nlda:oai:surfsharekit.nl:dd6d5769-f621-4105-98f3-18d5d08cf52f","doi":null,"is_oa":false,"landing_page_url":"https://surfsharekit.nl/public/dd6d5769-f621-4105-98f3-18d5d08cf52f","pdf_url":null,"source":{"id":"https://openalex.org/S4306401843","display_name":"Data Archiving and Networked Services (DANS)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1322597698","host_organization_name":"Royal Netherlands Academy of Arts and Sciences","host_organization_lineage":["https://openalex.org/I1322597698"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Networks, 75(2), 113 - 123","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:HAL:hal-02422721v1","doi":null,"is_oa":true,"landing_page_url":"https://inria.hal.science/hal-02422721","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I4405252976","host_organization_name":"Centre pour la Communication Scientifique Directe","host_organization_lineage":["https://openalex.org/I4405252976"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Networks, 2020, 75 (2), pp.113-123. ⟨10.1002/net.21908⟩","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:vu:oai:research.vu.nl:publications/6e1946ae-956c-47ec-83c5-abf62b2af100","doi":null,"is_oa":true,"landing_page_url":"https://research.vu.nl/en/publications/6e1946ae-956c-47ec-83c5-abf62b2af100","pdf_url":null,"source":{"id":"https://openalex.org/S4306401843","display_name":"Data Archiving and Networked Services (DANS)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1322597698","host_organization_name":"Royal Netherlands Academy of Arts and Sciences","host_organization_lineage":["https://openalex.org/I1322597698"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Networks, 75(2), 113 - 123. Wiley-Liss Inc.","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"doi:10.1002/net.21908","doi":"https://doi.org/10.1002/net.21908","is_oa":true,"landing_page_url":"https://doi.org/10.1002/net.21908","pdf_url":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/net.21908","source":{"id":"https://openalex.org/S191798613","display_name":"Networks","issn_l":"0028-3045","issn":["0028-3045","1097-0037"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","ccf-c","cwts-core","dongbi-b","jufo-2","norway-1","poland-140","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Networks","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G4691943236","display_name":"Work function algorithms in online optimization","funder_award_id":"612.001.215","funder_id":"https://openalex.org/F4320321800","funder_display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek"},{"id":"https://openalex.org/G565383568","display_name":null,"funder_award_id":"024-002-003","funder_id":"https://openalex.org/F4320321800","funder_display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek"},{"id":"https://openalex.org/G5787031064","display_name":"Network planning and contract design for cross-chain control in cash networks","funder_award_id":"407-13-050","funder_id":"https://openalex.org/F4320321800","funder_display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek"}],"funders":[{"id":"https://openalex.org/F4320321014","display_name":"Vrije Universiteit Amsterdam","ror":"https://ror.org/008xxew50"},{"id":"https://openalex.org/F4320321800","display_name":"Nederlandse Organisatie voor Wetenschappelijk Onderzoek","ror":"https://ror.org/04jsz6e67"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2979470511.pdf","grobid_xml":"https://content.openalex.org/works/W2979470511.grobid-xml"},"referenced_works_count":27,"referenced_works":["https://openalex.org/W1488422606","https://openalex.org/W1811191388","https://openalex.org/W1832376799","https://openalex.org/W1975386621","https://openalex.org/W1997468604","https://openalex.org/W1998966479","https://openalex.org/W2011879371","https://openalex.org/W2014068360","https://openalex.org/W2029655305","https://openalex.org/W2041642712","https://openalex.org/W2050133090","https://openalex.org/W2054681163","https://openalex.org/W2055569927","https://openalex.org/W2069049565","https://openalex.org/W2089052211","https://openalex.org/W2092681793","https://openalex.org/W2118217956","https://openalex.org/W2127654349","https://openalex.org/W2168563161","https://openalex.org/W2401610261","https://openalex.org/W2612126268","https://openalex.org/W2771264424","https://openalex.org/W2802765707","https://openalex.org/W2911515492","https://openalex.org/W2964337044","https://openalex.org/W3171580098","https://openalex.org/W4214946404"],"related_works":["https://openalex.org/W1898013801","https://openalex.org/W641250650","https://openalex.org/W4231039975","https://openalex.org/W3167751710","https://openalex.org/W7096309303","https://openalex.org/W3044539208","https://openalex.org/W1588326061","https://openalex.org/W2977977833","https://openalex.org/W4293255437","https://openalex.org/W1975386621"],"abstract_inverted_index":{"Abstract":[0],"In":[1],"the":[2,24,27,39,45,57,63,67,72,76,80,93,96,115,124,129,132,138,181],"inventory":[3,7],"routing":[4,37,174],"problem":[5,17,50,113,151],"(IRP)":[6],"management":[8],"and":[9,55,75,102,170],"route":[10],"optimization":[11],"are":[12],"combined.":[13],"The":[14,59],"traveling":[15],"salesman":[16],"(TSP)":[18],"is":[19,29,85,126,140,148],"a":[20,42,53,86,103,141,163],"special":[21],"case":[22],"of":[23,41,44,65,69,79,106,131,162],"IRP,":[25],"hence":[26],"IRP":[28],"NP\u2010hard.":[30],"We":[31,47],"investigate":[32],"how":[33],"other":[34],"aspects":[35],"than":[36],"influence":[38],"complexity":[40,125,130,139],"variant":[43,94,165],"IRP.":[46],"first":[48],"study":[49],"variants":[51,152],"on":[52,56,95],"point":[54],"half\u2010line.":[58],"problems":[60],"differ":[61],"in":[62,71,114],"number":[64,68],"vehicles,":[66],"days":[70],"planning":[73,104,119],"horizon":[74,105],"service":[77,100,168],"times":[78,101,169],"customers.":[81],"Our":[82],"main":[83],"result":[84],"polynomial":[87],"time":[88],"dynamic":[89],"programming":[90],"algorithm":[91],"for":[92,110,136,150],"half\u2010line":[97],"with":[98,117,153,166],"uniform":[99,167],"2":[107],"days.":[108],"Second,":[109],"nearly":[111],"any":[112],"class":[116],"nonfixed":[118],"horizon,":[120],"we":[121,158],"show":[122],"that":[123],"dictated":[127],"by":[128],"pinwheel":[133],"scheduling":[134],"problem,":[135],"which":[137],"long\u2010standing":[142],"open":[143],"research":[144],"question.":[145],"Third,":[146],"NP\u2010hardness":[147,161,179],"shown":[149],"nonuniform":[154],"servicing":[155],"times.":[156],"Finally,":[157],"prove":[159],"strong":[160],"Euclidean":[164],"an":[171],"easily":[172],"computable":[173],"cost":[175],"approximation,":[176],"avoiding":[177],"immediate":[178],"via":[180],"TSP.":[182]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":4}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2019-10-18T00:00:00"}