{"id":"https://openalex.org/W2902290705","doi":"https://doi.org/10.1109/tsp.2020.2985591","title":"Alternating Group Lasso for Block-Term Tensor Decomposition and Application to ECG Source Separation","display_name":"Alternating Group Lasso for Block-Term Tensor Decomposition and Application to ECG Source Separation","publication_year":2020,"publication_date":"2020-01-01","ids":{"openalex":"https://openalex.org/W2902290705","doi":"https://doi.org/10.1109/tsp.2020.2985591","mag":"2902290705"},"language":"en","primary_location":{"id":"doi:10.1109/tsp.2020.2985591","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2020.2985591","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Signal Processing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://hal.science/hal-01899469","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5062382303","display_name":"Jos\u00e9 Henrique de Morais Goulart","orcid":"https://orcid.org/0000-0003-1812-6229"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210124956","display_name":"GIPSA-Lab","ror":"https://ror.org/02wrme198","country_code":"FR","type":"facility","lineage":["https://openalex.org/I106785703","https://openalex.org/I1294671590","https://openalex.org/I4210124956","https://openalex.org/I899635006","https://openalex.org/I899635006"]},{"id":"https://openalex.org/I899635006","display_name":"Universit\u00e9 Grenoble Alpes","ror":"https://ror.org/02rx3b187","country_code":"FR","type":"education","lineage":["https://openalex.org/I899635006"]}],"countries":["FR"],"is_corresponding":true,"raw_author_name":"Jose Henrique de Morais Goulart","raw_affiliation_strings":["Gipsa-Lab, Universit\u00e9\u00a0Grenoble Alpes, CNRS, Grenoble, France","GIPSA-GAIA - GIPSA P\u00f4le G\u00e9om\u00e9trie, Apprentissage, Information et Algorithmes (GIPSA-lab\r\n11 rue des Math\u00e9matiques, \r\nGrenoble Campus BP46\r\nF-38402 SAINT MARTIN D'HERES CEDEX  - France)"],"raw_orcid":"https://orcid.org/0000-0003-1812-6229","affiliations":[{"raw_affiliation_string":"Gipsa-Lab, Universit\u00e9\u00a0Grenoble Alpes, CNRS, Grenoble, France","institution_ids":["https://openalex.org/I899635006","https://openalex.org/I4210124956","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"GIPSA-GAIA - GIPSA P\u00f4le G\u00e9om\u00e9trie, Apprentissage, Information et Algorithmes (GIPSA-lab\r\n11 rue des Math\u00e9matiques, \r\nGrenoble Campus BP46\r\nF-38402 SAINT MARTIN D'HERES CEDEX  - France)","institution_ids":["https://openalex.org/I4210124956"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024490959","display_name":"Pedro Marinho Ramos de Oliveira","orcid":"https://orcid.org/0000-0002-5310-4714"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I201841394","display_name":"Universit\u00e9 C\u00f4te d'Azur","ror":"https://ror.org/019tgvf94","country_code":"FR","type":"education","lineage":["https://openalex.org/I201841394"]},{"id":"https://openalex.org/I4210106479","display_name":"Laboratoire d'Informatique, Signaux et Syst\u00e8mes de Sophia Antipolis","ror":"https://ror.org/01215r597","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1326498283","https://openalex.org/I201841394","https://openalex.org/I4210106479","https://openalex.org/I4210159245"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Pedro Marinho Ramos de Oliveira","raw_affiliation_strings":["I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SIGNAL (France)"],"raw_orcid":"https://orcid.org/0000-0002-5310-4714","affiliations":[{"raw_affiliation_string":"I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","institution_ids":["https://openalex.org/I201841394","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SIGNAL (France)","institution_ids":["https://openalex.org/I4210106479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043594332","display_name":"Rodrigo Cabral Farias","orcid":"https://orcid.org/0000-0001-9261-6037"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I201841394","display_name":"Universit\u00e9 C\u00f4te d'Azur","ror":"https://ror.org/019tgvf94","country_code":"FR","type":"education","lineage":["https://openalex.org/I201841394"]},{"id":"https://openalex.org/I4210106479","display_name":"Laboratoire d'Informatique, Signaux et Syst\u00e8mes de Sophia Antipolis","ror":"https://ror.org/01215r597","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1326498283","https://openalex.org/I201841394","https://openalex.org/I4210106479","https://openalex.org/I4210159245"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Rodrigo Cabral Farias","raw_affiliation_strings":["I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SYSTEMES (France)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","institution_ids":["https://openalex.org/I201841394","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SYSTEMES (France)","institution_ids":["https://openalex.org/I4210106479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047373327","display_name":"Vicente Zarzoso","orcid":"https://orcid.org/0000-0001-9286-1163"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I201841394","display_name":"Universit\u00e9 C\u00f4te d'Azur","ror":"https://ror.org/019tgvf94","country_code":"FR","type":"education","lineage":["https://openalex.org/I201841394"]},{"id":"https://openalex.org/I4210106479","display_name":"Laboratoire d'Informatique, Signaux et Syst\u00e8mes de Sophia Antipolis","ror":"https://ror.org/01215r597","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1326498283","https://openalex.org/I201841394","https://openalex.org/I4210106479","https://openalex.org/I4210159245"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Vicente Zarzoso","raw_affiliation_strings":["I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SIGNAL (France)"],"raw_orcid":"https://orcid.org/0000-0001-9286-1163","affiliations":[{"raw_affiliation_string":"I3S Laboratory, Universit\u00e9\u00a0C\u00f4te d\u2019Azur, CNRS, Sophia-Antipolis, France","institution_ids":["https://openalex.org/I201841394","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"Laboratoire d'Informatique, Signaux, et Syst\u00e8mes de Sophia-Antipolis (I3S) / Equipe SIGNAL (France)","institution_ids":["https://openalex.org/I4210106479"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5033972557","display_name":"Pierre Comon","orcid":"https://orcid.org/0000-0001-9436-9228"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210124956","display_name":"GIPSA-Lab","ror":"https://ror.org/02wrme198","country_code":"FR","type":"facility","lineage":["https://openalex.org/I106785703","https://openalex.org/I1294671590","https://openalex.org/I4210124956","https://openalex.org/I899635006","https://openalex.org/I899635006"]},{"id":"https://openalex.org/I899635006","display_name":"Universit\u00e9 Grenoble Alpes","ror":"https://ror.org/02rx3b187","country_code":"FR","type":"education","lineage":["https://openalex.org/I899635006"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Pierre Comon","raw_affiliation_strings":["Gipsa-Lab, Universit\u00e9\u00a0Grenoble Alpes, CNRS, Grenoble, France","GIPSA-GAIA - GIPSA P\u00f4le G\u00e9om\u00e9trie, Apprentissage, Information et Algorithmes (GIPSA-lab\r\n11 rue des Math\u00e9matiques, \r\nGrenoble Campus BP46\r\nF-38402 SAINT MARTIN D'HERES CEDEX  - France)"],"raw_orcid":"https://orcid.org/0000-0001-9436-9228","affiliations":[{"raw_affiliation_string":"Gipsa-Lab, Universit\u00e9\u00a0Grenoble Alpes, CNRS, Grenoble, France","institution_ids":["https://openalex.org/I899635006","https://openalex.org/I4210124956","https://openalex.org/I1294671590"]},{"raw_affiliation_string":"GIPSA-GAIA - GIPSA P\u00f4le G\u00e9om\u00e9trie, Apprentissage, Information et Algorithmes (GIPSA-lab\r\n11 rue des Math\u00e9matiques, \r\nGrenoble Campus BP46\r\nF-38402 SAINT MARTIN D'HERES CEDEX  - France)","institution_ids":["https://openalex.org/I4210124956"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5062382303"],"corresponding_institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I4210124956","https://openalex.org/I899635006"],"apc_list":null,"apc_paid":null,"fwci":3.0389,"has_fulltext":false,"cited_by_count":30,"citation_normalized_percentile":{"value":0.92046715,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":98},"biblio":{"volume":"68","issue":null,"first_page":"2682","last_page":"2696"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11447","display_name":"Blind Source Separation Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T11447","display_name":"Blind Source Separation Techniques","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T12303","display_name":"Tensor decomposition and applications","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2605","display_name":"Computational Mathematics"},"field":{"id":"https://openalex.org/fields/26","display_name":"Mathematics"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9811000227928162,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/initialization","display_name":"Initialization","score":0.6382185220718384},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6178781390190125},{"id":"https://openalex.org/keywords/blind-signal-separation","display_name":"Blind signal separation","score":0.5592550039291382},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5591708421707153},{"id":"https://openalex.org/keywords/tensor","display_name":"Tensor (intrinsic definition)","score":0.5519742369651794},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.5485759377479553},{"id":"https://openalex.org/keywords/source-separation","display_name":"Source separation","score":0.5247718691825867},{"id":"https://openalex.org/keywords/matrix-norm","display_name":"Matrix norm","score":0.517347514629364},{"id":"https://openalex.org/keywords/rank","display_name":"Rank (graph theory)","score":0.4672735929489136},{"id":"https://openalex.org/keywords/hessian-matrix","display_name":"Hessian matrix","score":0.4535452425479889},{"id":"https://openalex.org/keywords/low-rank-approximation","display_name":"Low-rank approximation","score":0.43792304396629333},{"id":"https://openalex.org/keywords/term","display_name":"Term (time)","score":0.42489174008369446},{"id":"https://openalex.org/keywords/tensor-decomposition","display_name":"Tensor decomposition","score":0.42277225852012634},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4132320284843445},{"id":"https://openalex.org/keywords/linear-least-squares","display_name":"Linear least squares","score":0.41051116585731506},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.4032471477985382},{"id":"https://openalex.org/keywords/singular-value-decomposition","display_name":"Singular value decomposition","score":0.3939513862133026},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.28037309646606445},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.10423758625984192}],"concepts":[{"id":"https://openalex.org/C114466953","wikidata":"https://www.wikidata.org/wiki/Q6034165","display_name":"Initialization","level":2,"score":0.6382185220718384},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6178781390190125},{"id":"https://openalex.org/C120317606","wikidata":"https://www.wikidata.org/wiki/Q17105967","display_name":"Blind signal separation","level":3,"score":0.5592550039291382},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5591708421707153},{"id":"https://openalex.org/C155281189","wikidata":"https://www.wikidata.org/wiki/Q3518150","display_name":"Tensor (intrinsic definition)","level":2,"score":0.5519742369651794},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.5485759377479553},{"id":"https://openalex.org/C2776864781","wikidata":"https://www.wikidata.org/wiki/Q52617913","display_name":"Source separation","level":2,"score":0.5247718691825867},{"id":"https://openalex.org/C92207270","wikidata":"https://www.wikidata.org/wiki/Q939253","display_name":"Matrix norm","level":3,"score":0.517347514629364},{"id":"https://openalex.org/C164226766","wikidata":"https://www.wikidata.org/wiki/Q7293202","display_name":"Rank (graph theory)","level":2,"score":0.4672735929489136},{"id":"https://openalex.org/C203616005","wikidata":"https://www.wikidata.org/wiki/Q620495","display_name":"Hessian matrix","level":2,"score":0.4535452425479889},{"id":"https://openalex.org/C90199385","wikidata":"https://www.wikidata.org/wiki/Q6692777","display_name":"Low-rank approximation","level":3,"score":0.43792304396629333},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.42489174008369446},{"id":"https://openalex.org/C2986737658","wikidata":"https://www.wikidata.org/wiki/Q30103009","display_name":"Tensor decomposition","level":3,"score":0.42277225852012634},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4132320284843445},{"id":"https://openalex.org/C58663186","wikidata":"https://www.wikidata.org/wiki/Q6553462","display_name":"Linear least squares","level":3,"score":0.41051116585731506},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.4032471477985382},{"id":"https://openalex.org/C22789450","wikidata":"https://www.wikidata.org/wiki/Q420904","display_name":"Singular value decomposition","level":2,"score":0.3939513862133026},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.28037309646606445},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.10423758625984192},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"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/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tsp.2020.2985591","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tsp.2020.2985591","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Signal Processing","raw_type":"journal-article"},{"id":"pmh:oai:HAL:hal-01899469v3","is_oa":true,"landing_page_url":"https://hal.science/hal-01899469","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"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":"https://ieeexplore.ieee.org/document/9057734","raw_type":"Journal articles"}],"best_oa_location":{"id":"pmh:oai:HAL:hal-01899469v3","is_oa":true,"landing_page_url":"https://hal.science/hal-01899469","pdf_url":null,"source":{"id":"https://openalex.org/S4306402512","display_name":"HAL (Le Centre pour la Communication Scientifique Directe)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1294671590","host_organization_name":"Centre National de la Recherche Scientifique","host_organization_lineage":["https://openalex.org/I1294671590"],"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":"https://ieeexplore.ieee.org/document/9057734","raw_type":"Journal articles"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1983945617","display_name":null,"funder_award_id":"AdG 320594 (DecoDa)","funder_id":"https://openalex.org/F4320338352","funder_display_name":"FP7 Ideas: European Research Council"}],"funders":[{"id":"https://openalex.org/F4320338352","display_name":"FP7 Ideas: European Research Council","ror":"https://ror.org/0472cxd90"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":38,"referenced_works":["https://openalex.org/W1523985187","https://openalex.org/W1562564874","https://openalex.org/W1578953027","https://openalex.org/W1967486001","https://openalex.org/W2000045479","https://openalex.org/W2011179711","https://openalex.org/W2014092582","https://openalex.org/W2017948584","https://openalex.org/W2050968963","https://openalex.org/W2075427932","https://openalex.org/W2097192307","https://openalex.org/W2103981232","https://openalex.org/W2109907994","https://openalex.org/W2118117461","https://openalex.org/W2118682956","https://openalex.org/W2124033264","https://openalex.org/W2135631911","https://openalex.org/W2136424517","https://openalex.org/W2138019504","https://openalex.org/W2160941078","https://openalex.org/W2162800060","https://openalex.org/W2222512263","https://openalex.org/W2296511569","https://openalex.org/W2415476768","https://openalex.org/W2500090022","https://openalex.org/W2577530936","https://openalex.org/W2765536556","https://openalex.org/W2773592818","https://openalex.org/W2788554800","https://openalex.org/W2791239686","https://openalex.org/W2805850711","https://openalex.org/W2890058448","https://openalex.org/W2938681667","https://openalex.org/W2963277906","https://openalex.org/W3103391113","https://openalex.org/W4242200182","https://openalex.org/W4300225939","https://openalex.org/W6676181923"],"related_works":["https://openalex.org/W4221157149","https://openalex.org/W4283122425","https://openalex.org/W2057590040","https://openalex.org/W1991825408","https://openalex.org/W3135513863","https://openalex.org/W2408897693","https://openalex.org/W2969889343","https://openalex.org/W1990659486","https://openalex.org/W4306936641","https://openalex.org/W4220722047"],"abstract_inverted_index":{"In":[0],"some":[1],"applications,":[2],"blind":[3,104],"source":[4],"separation":[5,105],"can":[6,47,112,188],"be":[7,48,113,189],"performed":[8],"by":[9,100],"computing":[10],"an":[11,53,179],"approximate":[12,60],"block-term":[13,119],"tensor":[14,74,120,134],"decomposition":[15],"(BTD),":[16],"under":[17],"much":[18,142],"milder":[19],"constraints":[20],"than":[21],"matrix-based":[22],"techniques.":[23],"However,":[24],"choosing":[25],"the":[26,31,43,80,101,138,152,156],"BTD":[27],"model":[28,81],"structure":[29,85,181],"(i.e.,":[30],"number":[32],"of":[33,103,106,108,158],"blocks":[34],"and":[35,42,83,163,182],"their":[36],"ranks)":[37],"is":[38,89,141],"a":[39,66,70,116,127],"difficult":[40],"problem,":[41],"standard":[44,128],"least-squares":[45,130],"formulation":[46],"ill-posed.":[49],"This":[50],"paper":[51],"proposes":[52],"alternating":[54],"group":[55],"lasso":[56],"algorithm":[57,131,140],"to":[58,147,155,176,183],"compute":[59],"low-rank":[61,117],"BTDs.":[62],"It":[63],"solves,":[64],"in":[65],"provably":[67],"convergent":[68],"manner,":[69],"well-posed":[71],"mixed-norm":[72],"regularized":[73],"approximation":[75,121],"problem":[76,102],"that":[77,137],"allows":[78],"estimating":[79],"parameters":[82],"its":[84,174],"jointly.":[86],"A":[87],"variant":[88,154],"also":[90,150],"put":[91],"forward":[92],"for":[93],"dealing":[94],"with":[95,126,145],"linearly":[96],"constrained":[97,153],"blocks,":[98],"motivated":[99],"sums":[107],"complex":[109],"exponentials,":[110],"which":[111,187],"cast":[114],"as":[115,192],"Hankel-structured":[118],"problem.":[122],"An":[123],"experimental":[124],"comparison":[125],"nonlinear":[129],"on":[132],"synthetic":[133],"data":[135],"indicates":[136],"proposed":[139],"more":[143],"robust":[144],"respect":[146],"initialization.":[148],"We":[149],"apply":[151],"extraction":[157],"atrial":[159,168,193],"activity":[160],"from":[161],"semi-synthetic":[162],"real-world":[164],"electrocardiogram":[165],"recordings":[166],"during":[167],"fibrillation":[169,194],"episodes.":[170],"Our":[171],"results":[172],"show":[173],"ability":[175],"consistently":[177],"select":[178],"adequate":[180],"extract":[184],"multiple":[185],"signals":[186],"physiologically":[190],"interpreted":[191],"patterns.":[195]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":5}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
