{"id":"https://openalex.org/W2963795223","doi":"https://doi.org/10.1007/s10878-018-00374-x","title":"Hardness, approximability, and fixed-parameter tractability of the clustered shortest-path tree problem","display_name":"Hardness, approximability, and fixed-parameter tractability of the clustered shortest-path tree problem","publication_year":2019,"publication_date":"2019-01-02","ids":{"openalex":"https://openalex.org/W2963795223","doi":"https://doi.org/10.1007/s10878-018-00374-x","mag":"2963795223"},"language":"en","primary_location":{"id":"doi:10.1007/s10878-018-00374-x","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10878-018-00374-x","pdf_url":null,"source":{"id":"https://openalex.org/S107925523","display_name":"Journal of Combinatorial Optimization","issn_l":"1382-6905","issn":["1382-6905","1573-2886"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Combinatorial Optimization","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/1801.10416v1","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5036014692","display_name":"Mattia D\u2019Emidio","orcid":"https://orcid.org/0000-0001-7833-9520"},"institutions":[{"id":"https://openalex.org/I26415053","display_name":"University of L'Aquila","ror":"https://ror.org/01j9p1r26","country_code":"IT","type":"education","lineage":["https://openalex.org/I26415053"]}],"countries":["IT"],"is_corresponding":true,"raw_author_name":"Mattia D\u2019Emidio","raw_affiliation_strings":["Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy"],"raw_orcid":"https://orcid.org/0000-0001-7833-9520","affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]},{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023691482","display_name":"Luca Forlizzi","orcid":"https://orcid.org/0000-0002-3923-7668"},"institutions":[{"id":"https://openalex.org/I26415053","display_name":"University of L'Aquila","ror":"https://ror.org/01j9p1r26","country_code":"IT","type":"education","lineage":["https://openalex.org/I26415053"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Luca Forlizzi","raw_affiliation_strings":["Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]},{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022524777","display_name":"Daniele Frigioni","orcid":"https://orcid.org/0000-0002-2180-8813"},"institutions":[{"id":"https://openalex.org/I26415053","display_name":"University of L'Aquila","ror":"https://ror.org/01j9p1r26","country_code":"IT","type":"education","lineage":["https://openalex.org/I26415053"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Daniele Frigioni","raw_affiliation_strings":["Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]},{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L'Aquila, L'Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028702811","display_name":"Stefano Leucci","orcid":"https://orcid.org/0000-0002-8848-7006"},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Stefano Leucci","raw_affiliation_strings":["Department of Computer Science, ETH Z\u00fcrich, Z\u00fcrich, Switzerland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Computer Science, ETH Z\u00fcrich, Z\u00fcrich, Switzerland","institution_ids":["https://openalex.org/I35440088"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5087770784","display_name":"Guido Proietti","orcid":"https://orcid.org/0000-0003-1009-5552"},"institutions":[{"id":"https://openalex.org/I26415053","display_name":"University of L'Aquila","ror":"https://ror.org/01j9p1r26","country_code":"IT","type":"education","lineage":["https://openalex.org/I26415053"]},{"id":"https://openalex.org/I4210162062","display_name":"Istituto di Analisi dei Sistemi ed Informatica Antonio Ruberti","ror":"https://ror.org/054ye0e45","country_code":"IT","type":"facility","lineage":["https://openalex.org/I4210155236","https://openalex.org/I4210162062"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Guido Proietti","raw_affiliation_strings":["Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","Istituto di Analisi dei Sistemi e Informatica \u201cAntonio Ruberti\u201d Consiglio Nazionale delle Ricerche, Rome, Italy","Istituto di Analisi dei Sistemi e Informatica \"Antonio Ruberti\" Consiglio Nazionale delle Ricerche, Rome, Italy"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Computer Science and Mathematics, University of L\u2019Aquila, L\u2019Aquila, Italy","institution_ids":["https://openalex.org/I26415053"]},{"raw_affiliation_string":"Istituto di Analisi dei Sistemi e Informatica \u201cAntonio Ruberti\u201d Consiglio Nazionale delle Ricerche, Rome, Italy","institution_ids":["https://openalex.org/I4210162062"]},{"raw_affiliation_string":"Istituto di Analisi dei Sistemi e Informatica \"Antonio Ruberti\" Consiglio Nazionale delle Ricerche, Rome, Italy","institution_ids":["https://openalex.org/I4210162062"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5036014692"],"corresponding_institution_ids":["https://openalex.org/I26415053"],"apc_list":{"value":2990,"currency":"USD","value_usd":2990},"apc_paid":null,"fwci":3.5524,"has_fulltext":false,"cited_by_count":23,"citation_normalized_percentile":{"value":0.93534763,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"38","issue":"1","first_page":"165","last_page":"184"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9975000023841858,"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/T10720","display_name":"Complexity and Algorithms in Graphs","score":0.9975000023841858,"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/T10374","display_name":"Advanced Graph Theory Research","score":0.9872000217437744,"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/T11502","display_name":"Facility Location and Emergency Management","score":0.9833999872207642,"subfield":{"id":"https://openalex.org/subfields/1407","display_name":"Organizational Behavior and Human Resource Management"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.739081621170044},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.705059289932251},{"id":"https://openalex.org/keywords/shortest-path-problem","display_name":"Shortest path problem","score":0.6667585372924805},{"id":"https://openalex.org/keywords/theory-of-computation","display_name":"Theory of computation","score":0.6357163786888123},{"id":"https://openalex.org/keywords/vertex","display_name":"Vertex (graph theory)","score":0.5920487642288208},{"id":"https://openalex.org/keywords/approximation-algorithm","display_name":"Approximation algorithm","score":0.5234498381614685},{"id":"https://openalex.org/keywords/shortest-path-tree","display_name":"Shortest-path tree","score":0.4925866723060608},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.43053823709487915},{"id":"https://openalex.org/keywords/path","display_name":"Path (computing)","score":0.41303664445877075},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.3957310616970062},{"id":"https://openalex.org/keywords/graph","display_name":"Graph","score":0.33998575806617737},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.124417245388031},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.11772328615188599}],"concepts":[{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.739081621170044},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.705059289932251},{"id":"https://openalex.org/C22590252","wikidata":"https://www.wikidata.org/wiki/Q1058754","display_name":"Shortest path problem","level":3,"score":0.6667585372924805},{"id":"https://openalex.org/C24858836","wikidata":"https://www.wikidata.org/wiki/Q844718","display_name":"Theory of computation","level":2,"score":0.6357163786888123},{"id":"https://openalex.org/C80899671","wikidata":"https://www.wikidata.org/wiki/Q1304193","display_name":"Vertex (graph theory)","level":3,"score":0.5920487642288208},{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.5234498381614685},{"id":"https://openalex.org/C23394520","wikidata":"https://www.wikidata.org/wiki/Q4919350","display_name":"Shortest-path tree","level":3,"score":0.4925866723060608},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.43053823709487915},{"id":"https://openalex.org/C2777735758","wikidata":"https://www.wikidata.org/wiki/Q817765","display_name":"Path (computing)","level":2,"score":0.41303664445877075},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.3957310616970062},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.33998575806617737},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.124417245388031},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.11772328615188599},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1007/s10878-018-00374-x","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10878-018-00374-x","pdf_url":null,"source":{"id":"https://openalex.org/S107925523","display_name":"Journal of Combinatorial Optimization","issn_l":"1382-6905","issn":["1382-6905","1573-2886"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Combinatorial Optimization","raw_type":"journal-article"},{"id":"mag:2786768055","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1801.10416v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null},{"id":"pmh:oai:RePEc:spr:jcomop:v:38:y:2019:i:1:d:10.1007_s10878-018-00374-x","is_oa":false,"landing_page_url":"http://link.springer.com/10.1007/s10878-018-00374-x","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"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":"article"}],"best_oa_location":{"id":"mag:2786768055","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1801.10416v1","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":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/W1024415283","https://openalex.org/W1906469382","https://openalex.org/W1976584101","https://openalex.org/W1978707544","https://openalex.org/W1986593951","https://openalex.org/W2011039300","https://openalex.org/W2041907251","https://openalex.org/W2043916130","https://openalex.org/W2045326192","https://openalex.org/W2069231115","https://openalex.org/W2079125893","https://openalex.org/W2094446349","https://openalex.org/W2164081616","https://openalex.org/W2295961103","https://openalex.org/W2373493542","https://openalex.org/W2579426115","https://openalex.org/W2610052675","https://openalex.org/W2765932048"],"related_works":["https://openalex.org/W2032550399","https://openalex.org/W2057791178","https://openalex.org/W2274404144","https://openalex.org/W4206588173","https://openalex.org/W2963203140","https://openalex.org/W2103613456","https://openalex.org/W1980494375","https://openalex.org/W2358754422","https://openalex.org/W2282234940","https://openalex.org/W2016824557"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":10},{"year":2019,"cited_by_count":1}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}