{"id":"https://openalex.org/W3198337268","doi":"https://doi.org/10.1109/jbhi.2021.3108699","title":"Blind Source Separation in Persistent Atrial Fibrillation Electrocardiograms Using Block-Term Tensor Decomposition With L\u00f6wner Constraints","display_name":"Blind Source Separation in Persistent Atrial Fibrillation Electrocardiograms Using Block-Term Tensor Decomposition With L\u00f6wner Constraints","publication_year":2021,"publication_date":"2021-08-30","ids":{"openalex":"https://openalex.org/W3198337268","doi":"https://doi.org/10.1109/jbhi.2021.3108699","mag":"3198337268","pmid":"https://pubmed.ncbi.nlm.nih.gov/34460408"},"language":"en","primary_location":{"id":"doi:10.1109/jbhi.2021.3108699","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jbhi.2021.3108699","pdf_url":"https://ieeexplore.ieee.org/ielx7/6221020/9757026/09525188.pdf","source":{"id":"https://openalex.org/S2495854775","display_name":"IEEE Journal of Biomedical and Health Informatics","issn_l":"2168-2194","issn":["2168-2194","2168-2208"],"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Biomedical and Health Informatics","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://ieeexplore.ieee.org/ielx7/6221020/9757026/09525188.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5024490959","display_name":"Pedro Marinho Ramos de Oliveira","orcid":"https://orcid.org/0000-0002-5310-4714"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"P. M. R. de Oliveira","raw_affiliation_strings":["BioSerenity, Paris, France"],"raw_orcid":"https://orcid.org/0000-0002-5310-4714","affiliations":[{"raw_affiliation_string":"BioSerenity, Paris, France","institution_ids":[]}]},{"author_position":"middle","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/I4210119061","display_name":"Institut de Recherche en Informatique de Toulouse","ror":"https://ror.org/01rx4qw44","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I205747304","https://openalex.org/I205747304","https://openalex.org/I4210119061","https://openalex.org/I4387153255","https://openalex.org/I4405258862","https://openalex.org/I4405258862"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"J. H. de M. Goulart","raw_affiliation_strings":["Institut de Recherche en Informatique de Toulouse, Université de Toulouse, Centre National de la Recherche Scientifique, Toulouse, France","Institut de Recherche en Informatique de Toulouse, Universit&#x00E9"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institut de Recherche en Informatique de Toulouse, Université de Toulouse, Centre National de la Recherche Scientifique, Toulouse, France","institution_ids":["https://openalex.org/I4210119061"]},{"raw_affiliation_string":"Institut de Recherche en Informatique de Toulouse, Universit&#x00E9","institution_ids":["https://openalex.org/I4210119061"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035172690","display_name":"Carlos Alexandre Rolim Fernandes","orcid":"https://orcid.org/0000-0002-9933-9930"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"C. A. R. Fernandes","raw_affiliation_strings":["Department of Computer Engineering, University Federal do Ceará, Sobral, Brazil",", Sobral, Brazil"],"raw_orcid":"https://orcid.org/0000-0002-9933-9930","affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, University Federal do Ceará, Sobral, Brazil","institution_ids":[]},{"raw_affiliation_string":", Sobral, Brazil","institution_ids":[]}]},{"author_position":"last","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"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"V. Zarzoso","raw_affiliation_strings":["Université Côte d’Azur, Centre National de la Recherche Scientifique, I3S Laboratory, Sophia Antipolis, France","te d&#x2019","Universit&#x00E9","C&#x00F4"],"raw_orcid":"https://orcid.org/0000-0001-9286-1163","affiliations":[{"raw_affiliation_string":"Université Côte d’Azur, Centre National de la Recherche Scientifique, I3S Laboratory, Sophia Antipolis, France","institution_ids":["https://openalex.org/I1294671590"]},{"raw_affiliation_string":"te d&#x2019","institution_ids":[]},{"raw_affiliation_string":"Universit&#x00E9","institution_ids":[]},{"raw_affiliation_string":"C&#x00F4","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5024490959"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":{"value":1942,"currency":"EUR","value_usd":2094},"fwci":1.2337,"has_fulltext":true,"cited_by_count":10,"citation_normalized_percentile":{"value":0.79562483,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"26","issue":"4","first_page":"1538","last_page":"1548"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11447","display_name":"Blind Source Separation Techniques","score":0.9986000061035156,"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":0.9986000061035156,"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":0.9912999868392944,"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/T11021","display_name":"ECG Monitoring and Analysis","score":0.9435999989509583,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/blind-signal-separation","display_name":"Blind signal separation","score":0.6257888078689575},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.565954327583313},{"id":"https://openalex.org/keywords/tensor","display_name":"Tensor (intrinsic definition)","score":0.4928476810455322},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.4760465621948242},{"id":"https://openalex.org/keywords/block","display_name":"Block (permutation group theory)","score":0.476005882024765},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.47403645515441895},{"id":"https://openalex.org/keywords/projection","display_name":"Projection (relational algebra)","score":0.45764750242233276},{"id":"https://openalex.org/keywords/tensor-decomposition","display_name":"Tensor decomposition","score":0.44416967034339905},{"id":"https://openalex.org/keywords/population","display_name":"Population","score":0.43575519323349},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.4275439977645874},{"id":"https://openalex.org/keywords/qr-decomposition","display_name":"QR decomposition","score":0.42229220271110535},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.42000824213027954},{"id":"https://openalex.org/keywords/source-separation","display_name":"Source separation","score":0.41690492630004883},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.40601417422294617},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.3927870988845825},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.33892107009887695},{"id":"https://openalex.org/keywords/pure-mathematics","display_name":"Pure mathematics","score":0.13370293378829956},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.12803766131401062},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.11298561096191406}],"concepts":[{"id":"https://openalex.org/C120317606","wikidata":"https://www.wikidata.org/wiki/Q17105967","display_name":"Blind signal separation","level":3,"score":0.6257888078689575},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.565954327583313},{"id":"https://openalex.org/C155281189","wikidata":"https://www.wikidata.org/wiki/Q3518150","display_name":"Tensor (intrinsic definition)","level":2,"score":0.4928476810455322},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.4760465621948242},{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.476005882024765},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.47403645515441895},{"id":"https://openalex.org/C57493831","wikidata":"https://www.wikidata.org/wiki/Q3134666","display_name":"Projection (relational algebra)","level":2,"score":0.45764750242233276},{"id":"https://openalex.org/C2986737658","wikidata":"https://www.wikidata.org/wiki/Q30103009","display_name":"Tensor decomposition","level":3,"score":0.44416967034339905},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.43575519323349},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.4275439977645874},{"id":"https://openalex.org/C188060507","wikidata":"https://www.wikidata.org/wiki/Q653242","display_name":"QR decomposition","level":3,"score":0.42229220271110535},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.42000824213027954},{"id":"https://openalex.org/C2776864781","wikidata":"https://www.wikidata.org/wiki/Q52617913","display_name":"Source separation","level":2,"score":0.41690492630004883},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.40601417422294617},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3927870988845825},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.33892107009887695},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.13370293378829956},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.12803766131401062},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.11298561096191406},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"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/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"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/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":true},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":true},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":true},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":3,"locations":[{"id":"doi:10.1109/jbhi.2021.3108699","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jbhi.2021.3108699","pdf_url":"https://ieeexplore.ieee.org/ielx7/6221020/9757026/09525188.pdf","source":{"id":"https://openalex.org/S2495854775","display_name":"IEEE Journal of Biomedical and Health Informatics","issn_l":"2168-2194","issn":["2168-2194","2168-2208"],"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Biomedical and Health Informatics","raw_type":"journal-article"},{"id":"pmid:34460408","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/34460408","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE journal of biomedical and health informatics","raw_type":null},{"id":"pmh:oai:HAL:hal-03326486v1","is_oa":true,"landing_page_url":"https://hal.science/hal-03326486","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":"IEEE Journal of Biomedical and Health Informatics, 2022, 26 (4), pp.1538 - 1548. ⟨10.1109/JBHI.2021.3108699⟩","raw_type":"Journal articles"}],"best_oa_location":{"id":"doi:10.1109/jbhi.2021.3108699","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jbhi.2021.3108699","pdf_url":"https://ieeexplore.ieee.org/ielx7/6221020/9757026/09525188.pdf","source":{"id":"https://openalex.org/S2495854775","display_name":"IEEE Journal of Biomedical and Health Informatics","issn_l":"2168-2194","issn":["2168-2194","2168-2208"],"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Biomedical and Health Informatics","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2113015678","display_name":null,"funder_award_id":"ANR-19-P3IA-0002","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"},{"id":"https://openalex.org/G8202435710","display_name":null,"funder_award_id":"19-P3IA-0002","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"},{"id":"https://openalex.org/G8318455765","display_name":null,"funder_award_id":"ANR-19","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"}],"funders":[{"id":"https://openalex.org/F4320313937","display_name":"Universit\u00e9 Grenoble Alpes","ror":"https://ror.org/02rx3b187"},{"id":"https://openalex.org/F4320320883","display_name":"Agence Nationale de la Recherche","ror":"https://ror.org/00rbzpz17"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3198337268.pdf","grobid_xml":"https://content.openalex.org/works/W3198337268.grobid-xml"},"referenced_works_count":26,"referenced_works":["https://openalex.org/W1989727046","https://openalex.org/W2017948584","https://openalex.org/W2066998543","https://openalex.org/W2075427932","https://openalex.org/W2097192307","https://openalex.org/W2099741732","https://openalex.org/W2102360888","https://openalex.org/W2118117461","https://openalex.org/W2118682956","https://openalex.org/W2124033264","https://openalex.org/W2126625374","https://openalex.org/W2138019504","https://openalex.org/W2159975225","https://openalex.org/W2167997886","https://openalex.org/W2211756931","https://openalex.org/W2288569778","https://openalex.org/W2604803308","https://openalex.org/W2788554800","https://openalex.org/W2805850711","https://openalex.org/W2902290705","https://openalex.org/W2912139642","https://openalex.org/W2920763140","https://openalex.org/W2938681667","https://openalex.org/W2989204862","https://openalex.org/W3099514962","https://openalex.org/W6735684229"],"related_works":["https://openalex.org/W1509813908","https://openalex.org/W2031820693","https://openalex.org/W3024816962","https://openalex.org/W973023320","https://openalex.org/W1910172735","https://openalex.org/W2118307209","https://openalex.org/W2078349096","https://openalex.org/W2107364365","https://openalex.org/W2107688514","https://openalex.org/W2137288760"],"abstract_inverted_index":{"The":[0,152],"estimation":[1,64,261],"of":[2,20,65,75,141,144,167,179,212,223,240,258],"the":[3,17,24,52,63,107,122,132,139,168,180,194,221,224,231,249],"atrial":[4,21,259],"activity":[5],"(AA)":[6],"signal":[7,127,260],"from":[8,121,160,164,215,244,263],"electrocardiogram":[9],"(ECG)":[10],"recordings":[11],"is":[12,59,158,198],"an":[13,136,202],"important":[14],"step":[15],"in":[16,30,125,229,256],"noninvasive":[18],"analysis":[19],"fibrillation":[22],"(AF),":[23],"most":[25],"common":[26],"sustained":[27],"arrhythmia":[28],"encountered":[29],"clinical":[31],"practice.":[32],"This":[33,197],"problem":[34,140],"admits":[35],"a":[36,48,111,126,156,177,238,269],"blind":[37,142],"source":[38],"separation":[39,143],"(BSS)":[40],"formulation":[41],"that":[42,189,248],"has":[43],"been":[44],"recently":[45,181],"posed":[46],"as":[47,266,268],"tensor":[49,112,154],"factorization,":[50],"using":[51],"Hankel-based":[53],"block":[54],"term":[55],"decomposition":[56,195],"(BTD),":[57],"which":[58,147,205],"particularly":[60],"well-suited":[61],"to":[62,92,114],"exponential":[66],"models":[67,148],"like":[68],"AA":[69,94,133],"during":[70],"AF.":[71],"However,":[72],"persistent":[73,245],"forms":[74],"AF":[76,246],"are":[77],"characterized":[78],"by":[79,200],"short":[80,267],"R-R":[81],"intervals":[82],"and":[83,96,118],"very":[84],"disorganized":[85],"(or":[86],"weak)":[87],"AA,":[88],"making":[89],"it":[90],"difficult":[91],"model":[93],"directly":[95],"perform":[97],"its":[98],"successful":[99],"extraction":[100],"through":[101],"Hankel-BTD.":[102],"To":[103,171],"overcome":[104],"this":[105,172,174],"drawback,":[106],"present":[108],"work":[109],"proposes":[110],"approach":[113,137],"estimate":[115],"QRS":[116,149],"complexes":[117,150],"subtract":[119],"them":[120],"ECG,":[123],"resulting":[124],"that,":[128],"ideally,":[129],"only":[130],"contains":[131],"component.":[134],"Such":[135],"tackles":[138],"rational":[145],"functions,":[146],"explicitly.":[151],"data":[153,219],"admitting":[155],"BTD":[157],"built":[159],"L\u00f6wner":[161,191],"matrices":[162],"generated":[163],"each":[165,210],"lead":[166],"observed":[169],"ECG.":[170],"end,":[173],"paper":[175],"formulates":[176],"variant":[178,251],"proposed":[182,225,250],"constrained":[183],"alternating":[184],"group":[185],"lasso":[186],"(CAGL)":[187],"algorithm":[188],"imposes":[190],"structure":[192],"on":[193,237],"blocks.":[196],"done":[199],"performing":[201],"orthogonal":[203],"projection,":[204],"we":[206],"explicitly":[207],"derive,":[208],"at":[209],"iteration":[211],"CAGL.":[213],"Results":[214],"experiments":[216],"with":[217],"synthetic":[218],"show":[220,247],"consistency":[222],"L\u00f6wner-constrained":[226],"AGL":[227],"(LCAGL)":[228],"extracting":[230],"desired":[232],"sources.":[233],"Experimental":[234],"results":[235],"obtained":[236],"population":[239],"20":[241],"patients":[242],"suffering":[243],"outperforms":[252],"other":[253],"tensor-based":[254],"methods":[255],"terms":[257],"quality":[262],"ECG":[264],"records":[265],"single":[270],"heartbeat.":[271]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}