{"id":"https://openalex.org/W2582164634","doi":"https://doi.org/10.1109/lsp.2017.2657605","title":"Regularized K-SVD","display_name":"Regularized K-SVD","publication_year":2017,"publication_date":"2017-01-24","ids":{"openalex":"https://openalex.org/W2582164634","doi":"https://doi.org/10.1109/lsp.2017.2657605","mag":"2582164634"},"language":"en","primary_location":{"id":"doi:10.1109/lsp.2017.2657605","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2017.2657605","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"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 Signal Processing Letters","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/A5023994037","display_name":"Bogdan Dumitrescu","orcid":"https://orcid.org/0000-0003-4555-1714"},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Bogdan Dumitrescu","raw_affiliation_strings":["Department of Automatic Control and Computers, University Politehnica of Bucharest, Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Automatic Control and Computers, University Politehnica of Bucharest, Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5055191887","display_name":"Paul Irofti","orcid":"https://orcid.org/0000-0002-7541-4334"},"institutions":[{"id":"https://openalex.org/I61641377","display_name":"Universitatea Na\u021bional\u0103 de \u0218tiin\u021b\u0103 \u0219i Tehnologie Politehnica Bucure\u0219ti","ror":"https://ror.org/0558j5q12","country_code":"RO","type":"education","lineage":["https://openalex.org/I61641377"]}],"countries":["RO"],"is_corresponding":false,"raw_author_name":"Paul Irofti","raw_affiliation_strings":["Department of Automatic Control and Computers, University Politehnica of Bucharest, Bucharest, Romania"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Automatic Control and Computers, University Politehnica of Bucharest, Bucharest, Romania","institution_ids":["https://openalex.org/I61641377"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I61641377"],"apc_list":null,"apc_paid":null,"fwci":3.5534,"has_fulltext":false,"cited_by_count":26,"citation_normalized_percentile":{"value":0.92586381,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"24","issue":"3","first_page":"309","last_page":"313"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":1.0,"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"}},{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":0.9993000030517578,"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"}},{"id":"https://openalex.org/T11447","display_name":"Blind Source Separation Techniques","score":0.9984999895095825,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/regularization","display_name":"Regularization (linguistics)","score":0.6907563209533691},{"id":"https://openalex.org/keywords/k-svd","display_name":"K-SVD","score":0.6000356674194336},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5745285749435425},{"id":"https://openalex.org/keywords/sparse-approximation","display_name":"Sparse approximation","score":0.5638332366943359},{"id":"https://openalex.org/keywords/singular-value-decomposition","display_name":"Singular value decomposition","score":0.5596976280212402},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5457992553710938},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.5300055742263794},{"id":"https://openalex.org/keywords/dictionary-learning","display_name":"Dictionary learning","score":0.5022172927856445},{"id":"https://openalex.org/keywords/code-word","display_name":"Code word","score":0.43230724334716797},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.40412089228630066},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3648502826690674},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2874217629432678},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.1606777012348175}],"concepts":[{"id":"https://openalex.org/C2776135515","wikidata":"https://www.wikidata.org/wiki/Q17143721","display_name":"Regularization (linguistics)","level":2,"score":0.6907563209533691},{"id":"https://openalex.org/C154771677","wikidata":"https://www.wikidata.org/wiki/Q17098361","display_name":"K-SVD","level":3,"score":0.6000356674194336},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5745285749435425},{"id":"https://openalex.org/C124066611","wikidata":"https://www.wikidata.org/wiki/Q28684319","display_name":"Sparse approximation","level":2,"score":0.5638332366943359},{"id":"https://openalex.org/C22789450","wikidata":"https://www.wikidata.org/wiki/Q420904","display_name":"Singular value decomposition","level":2,"score":0.5596976280212402},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5457992553710938},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.5300055742263794},{"id":"https://openalex.org/C2988886741","wikidata":"https://www.wikidata.org/wiki/Q25304494","display_name":"Dictionary learning","level":3,"score":0.5022172927856445},{"id":"https://openalex.org/C153207627","wikidata":"https://www.wikidata.org/wiki/Q863873","display_name":"Code word","level":3,"score":0.43230724334716797},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.40412089228630066},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3648502826690674},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2874217629432678},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.1606777012348175}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lsp.2017.2657605","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2017.2657605","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"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 Signal Processing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.6600000262260437,"id":"https://metadata.un.org/sdg/4","display_name":"Quality Education"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W783113290","https://openalex.org/W1890834058","https://openalex.org/W1972348795","https://openalex.org/W1986988203","https://openalex.org/W2045328647","https://openalex.org/W2049332746","https://openalex.org/W2099100030","https://openalex.org/W2115429828","https://openalex.org/W2115549875","https://openalex.org/W2128659236","https://openalex.org/W2160547390","https://openalex.org/W2163112044","https://openalex.org/W2163398148","https://openalex.org/W2191124433","https://openalex.org/W2296399167","https://openalex.org/W2492287591","https://openalex.org/W2513514719","https://openalex.org/W2605174074","https://openalex.org/W3100231466","https://openalex.org/W6677446445","https://openalex.org/W6736161166"],"related_works":["https://openalex.org/W2509955295","https://openalex.org/W1971373099","https://openalex.org/W2532569109","https://openalex.org/W2572092625","https://openalex.org/W1987225540","https://openalex.org/W2008821896","https://openalex.org/W1778286912","https://openalex.org/W2099321050","https://openalex.org/W4245251483","https://openalex.org/W1992008660"],"abstract_inverted_index":{"The":[0],"problem":[1],"of":[2,17],"dictionary":[3],"learning":[4],"(DL)":[5],"for":[6],"sparse":[7],"representations":[8],"can":[9,45],"be":[10,46],"approximately":[11],"solved":[12],"by":[13],"several":[14],"algorithms.":[15],"Regularization":[16],"the":[18,41,49,76,82],"optimization":[19],"objective":[20],"(representation":[21],"error)":[22],"was":[23],"proved":[24],"useful,":[25],"since":[26],"it":[27],"avoids":[28],"possible":[29],"bottlenecks":[30],"due":[31],"to":[32,48,81],"nearly":[33],"linearly":[34],"dependent":[35],"atoms.":[36],"We":[37,62],"show":[38],"here":[39],"how":[40],"well-known":[42],"K-SVD":[43,69],"algorithm":[44,79],"adapted":[47],"regularized":[50,68,83],"DL":[51,84],"problem,":[52],"despite":[53],"previous":[54],"claims":[55],"that":[56,67],"such":[57],"an":[58],"adaptation":[59],"seems":[60],"impossible.":[61],"also":[63],"provide":[64],"numerical":[65],"evidence":[66],"is":[70],"better":[71],"than":[72],"Simultaneous":[73],"Codeword":[74],"Optimization,":[75],"most":[77],"prominent":[78],"dedicated":[80],"problem.":[85]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2017-02-03T00:00:00"}