{"id":"https://openalex.org/W4411132762","doi":"https://doi.org/10.1137/24m1682348","title":"Tree Quasi-separable Matrices: A Simultaneous Generalization of Sequentially and Hierarchically Semiseparable Representations","display_name":"Tree Quasi-separable Matrices: A Simultaneous Generalization of Sequentially and Hierarchically Semiseparable Representations","publication_year":2025,"publication_date":"2025-06-09","ids":{"openalex":"https://openalex.org/W4411132762","doi":"https://doi.org/10.1137/24m1682348"},"language":"en","primary_location":{"id":"doi:10.1137/24m1682348","is_oa":false,"landing_page_url":"https://doi.org/10.1137/24m1682348","pdf_url":null,"source":{"id":"https://openalex.org/S16958353","display_name":"SIAM Journal on Matrix Analysis and Applications","issn_l":"0895-4798","issn":["0895-4798","1095-7162"],"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 Matrix Analysis and Applications","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/A5038885631","display_name":"Nithin Govindarajan","orcid":"https://orcid.org/0000-0002-8591-130X"},"institutions":[{"id":"https://openalex.org/I99464096","display_name":"KU Leuven","ror":"https://ror.org/05f950310","country_code":"BE","type":"education","lineage":["https://openalex.org/I99464096"]}],"countries":["BE"],"is_corresponding":true,"raw_author_name":"Nithin Govindarajan","raw_affiliation_strings":["Electrical Engineering (ESAT), KU Leuven, Leuven, Belgium"],"raw_orcid":"https://orcid.org/0000-0002-8591-130X","affiliations":[{"raw_affiliation_string":"Electrical Engineering (ESAT), KU Leuven, Leuven, Belgium","institution_ids":["https://openalex.org/I99464096"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009022144","display_name":"Shivkumar Chandrasekaran","orcid":"https://orcid.org/0000-0003-2508-5605"},"institutions":[{"id":"https://openalex.org/I154570441","display_name":"University of California, Santa Barbara","ror":"https://ror.org/02t274463","country_code":"US","type":"education","lineage":["https://openalex.org/I154570441"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Shivkumar Chandrasekaran","raw_affiliation_strings":["Electrical and Computer Engineering, University of California\u2013Santa Barbara, Santa Barbara, CA 93106 USA"],"raw_orcid":"https://orcid.org/0000-0003-2508-5605","affiliations":[{"raw_affiliation_string":"Electrical and Computer Engineering, University of California\u2013Santa Barbara, Santa Barbara, CA 93106 USA","institution_ids":["https://openalex.org/I154570441"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035921496","display_name":"P. Dewilde","orcid":"https://orcid.org/0000-0002-9553-1845"},"institutions":[{"id":"https://openalex.org/I98358874","display_name":"Delft University of Technology","ror":"https://ror.org/02e2c7k09","country_code":"NL","type":"education","lineage":["https://openalex.org/I98358874"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Patrick Dewilde","raw_affiliation_strings":["Electrical Engineering, Mathematics and Computer Science, TU Delft, Delft, The Netherlands, and Institute of Advanced Study, Technical University Munich, Munich, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Electrical Engineering, Mathematics and Computer Science, TU Delft, Delft, The Netherlands, and Institute of Advanced Study, Technical University Munich, Munich, Germany","institution_ids":["https://openalex.org/I98358874"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5038885631"],"corresponding_institution_ids":["https://openalex.org/I99464096"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.13687699,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"46","issue":"2","first_page":"1562","last_page":"1586"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10792","display_name":"Matrix Theory and Algorithms","score":0.9764999747276306,"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/T10792","display_name":"Matrix Theory and Algorithms","score":0.9764999747276306,"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/T10320","display_name":"Neural Networks and Applications","score":0.9473999738693237,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T12292","display_name":"Graph Theory and Algorithms","score":0.9067999720573425,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/mathematics","display_name":"Mathematics","score":0.8078718781471252},{"id":"https://openalex.org/keywords/generalization","display_name":"Generalization","score":0.7683007121086121},{"id":"https://openalex.org/keywords/tree","display_name":"Tree (set theory)","score":0.5477466583251953},{"id":"https://openalex.org/keywords/separable-space","display_name":"Separable space","score":0.5149660706520081},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.4392140805721283},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.163129061460495}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.8078718781471252},{"id":"https://openalex.org/C177148314","wikidata":"https://www.wikidata.org/wiki/Q170084","display_name":"Generalization","level":2,"score":0.7683007121086121},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.5477466583251953},{"id":"https://openalex.org/C70710897","wikidata":"https://www.wikidata.org/wiki/Q680081","display_name":"Separable space","level":2,"score":0.5149660706520081},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.4392140805721283},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.163129061460495}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1137/24m1682348","is_oa":false,"landing_page_url":"https://doi.org/10.1137/24m1682348","pdf_url":null,"source":{"id":"https://openalex.org/S16958353","display_name":"SIAM Journal on Matrix Analysis and Applications","issn_l":"0895-4798","issn":["0895-4798","1095-7162"],"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 Matrix Analysis and Applications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":24,"referenced_works":["https://openalex.org/W608773355","https://openalex.org/W1524943583","https://openalex.org/W1584657480","https://openalex.org/W1712535590","https://openalex.org/W1973786815","https://openalex.org/W1973915465","https://openalex.org/W1982115588","https://openalex.org/W2040187556","https://openalex.org/W2050746438","https://openalex.org/W2052602889","https://openalex.org/W2060492405","https://openalex.org/W2069491387","https://openalex.org/W2070326534","https://openalex.org/W2073469129","https://openalex.org/W2089958289","https://openalex.org/W2105591391","https://openalex.org/W2114583457","https://openalex.org/W2141719776","https://openalex.org/W2166001032","https://openalex.org/W2188296733","https://openalex.org/W2298381282","https://openalex.org/W3196977957","https://openalex.org/W4213388818","https://openalex.org/W4300681438"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W1979597421","https://openalex.org/W2007980826","https://openalex.org/W2061531152","https://openalex.org/W3002753104","https://openalex.org/W2077600819","https://openalex.org/W2142036596","https://openalex.org/W2072657027","https://openalex.org/W2962838298","https://openalex.org/W2600246793"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}