{"id":"https://openalex.org/W2139105070","doi":"https://doi.org/10.1109/icip.2003.1246892","title":"Improved sparse approximation over quasiincoherent dictionaries","display_name":"Improved sparse approximation over quasiincoherent dictionaries","publication_year":2004,"publication_date":"2004-06-21","ids":{"openalex":"https://openalex.org/W2139105070","doi":"https://doi.org/10.1109/icip.2003.1246892","mag":"2139105070"},"language":"en","primary_location":{"id":"doi:10.1109/icip.2003.1246892","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2003.1246892","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5000879912","display_name":"Joel A. Tropp","orcid":"https://orcid.org/0000-0003-1024-1791"},"institutions":[{"id":"https://openalex.org/I86519309","display_name":"The University of Texas at Austin","ror":"https://ror.org/00hj54h04","country_code":"US","type":"education","lineage":["https://openalex.org/I86519309"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"J.A. Tropp","raw_affiliation_strings":["Inst. for Cornp. Eng. and Sci. (ICES), University of Texas at Austin, Austin, TX, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Inst. for Cornp. Eng. and Sci. (ICES), University of Texas at Austin, Austin, TX, USA","institution_ids":["https://openalex.org/I86519309"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042502878","display_name":"Anna C. Gilbert","orcid":"https://orcid.org/0000-0002-9627-9274"},"institutions":[{"id":"https://openalex.org/I1283103587","display_name":"AT&T (United States)","ror":"https://ror.org/02bbd5539","country_code":"US","type":"company","lineage":["https://openalex.org/I1283103587"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A.C. Gilbert","raw_affiliation_strings":["AT&T Labs-Research, NJ","AT&T Labs-Research, NJ, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AT&T Labs-Research, NJ","institution_ids":["https://openalex.org/I1283103587"]},{"raw_affiliation_string":"AT&T Labs-Research, NJ, USA","institution_ids":["https://openalex.org/I1283103587"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045502987","display_name":"S. Muthukrishnan","orcid":null},"institutions":[{"id":"https://openalex.org/I102322142","display_name":"Rutgers, The State University of New Jersey","ror":"https://ror.org/05vt9qd57","country_code":"US","type":"education","lineage":["https://openalex.org/I102322142"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"S. Muthukrishnan","raw_affiliation_strings":["Rutgers, The State University of New Jersey [New Brunswick]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Rutgers, The State University of New Jersey [New Brunswick]","institution_ids":["https://openalex.org/I102322142"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5028623121","display_name":"Michael Strauss","orcid":"https://orcid.org/0000-0003-3721-163X"},"institutions":[{"id":"https://openalex.org/I1283103587","display_name":"AT&T (United States)","ror":"https://ror.org/02bbd5539","country_code":"US","type":"company","lineage":["https://openalex.org/I1283103587"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"M.J. Strauss","raw_affiliation_strings":["AT&T Labs-Research, NJ","AT&T Labs-Research, NJ, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AT&T Labs-Research, NJ","institution_ids":["https://openalex.org/I1283103587"]},{"raw_affiliation_string":"AT&T Labs-Research, NJ, USA","institution_ids":["https://openalex.org/I1283103587"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":74,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"1","issue":null,"first_page":"I","last_page":"37"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10688","display_name":"Image and Signal Denoising Methods","score":0.9998999834060669,"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/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9994999766349792,"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/T11447","display_name":"Blind Source Separation Techniques","score":0.9959999918937683,"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/approximation-algorithm","display_name":"Approximation algorithm","score":0.6958754062652588},{"id":"https://openalex.org/keywords/generalization","display_name":"Generalization","score":0.6754293441772461},{"id":"https://openalex.org/keywords/greedy-algorithm","display_name":"Greedy algorithm","score":0.659115731716156},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.575818657875061},{"id":"https://openalex.org/keywords/sparse-approximation","display_name":"Sparse approximation","score":0.5503779649734497},{"id":"https://openalex.org/keywords/uncorrelated","display_name":"Uncorrelated","score":0.5203849077224731},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.46963071823120117},{"id":"https://openalex.org/keywords/implementation","display_name":"Implementation","score":0.46609747409820557},{"id":"https://openalex.org/keywords/approximation-theory","display_name":"Approximation theory","score":0.41743776202201843},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3501570522785187},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.07906067371368408}],"concepts":[{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.6958754062652588},{"id":"https://openalex.org/C177148314","wikidata":"https://www.wikidata.org/wiki/Q170084","display_name":"Generalization","level":2,"score":0.6754293441772461},{"id":"https://openalex.org/C51823790","wikidata":"https://www.wikidata.org/wiki/Q504353","display_name":"Greedy algorithm","level":2,"score":0.659115731716156},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.575818657875061},{"id":"https://openalex.org/C124066611","wikidata":"https://www.wikidata.org/wiki/Q28684319","display_name":"Sparse approximation","level":2,"score":0.5503779649734497},{"id":"https://openalex.org/C169345407","wikidata":"https://www.wikidata.org/wiki/Q8216221","display_name":"Uncorrelated","level":2,"score":0.5203849077224731},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.46963071823120117},{"id":"https://openalex.org/C26713055","wikidata":"https://www.wikidata.org/wiki/Q245962","display_name":"Implementation","level":2,"score":0.46609747409820557},{"id":"https://openalex.org/C145242015","wikidata":"https://www.wikidata.org/wiki/Q774123","display_name":"Approximation theory","level":2,"score":0.41743776202201843},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3501570522785187},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.07906067371368408},{"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/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icip.2003.1246892","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icip.2003.1246892","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429)","raw_type":"proceedings-article"},{"id":"pmh:oai:authors.library.caltech.edu:9047","is_oa":false,"landing_page_url":"https://authors.library.caltech.edu/9047/","pdf_url":null,"source":{"id":"https://openalex.org/S4306402161","display_name":"CaltechAUTHORS (California Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I122411786","host_organization_name":"California Institute of Technology","host_organization_lineage":["https://openalex.org/I122411786"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Book Section"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","id":"https://metadata.un.org/sdg/4","score":0.7300000190734863}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W391578156","https://openalex.org/W1568119442","https://openalex.org/W1986931325","https://openalex.org/W1989009613","https://openalex.org/W2021302824","https://openalex.org/W2035871342","https://openalex.org/W2055890717","https://openalex.org/W2076866563","https://openalex.org/W2099641086","https://openalex.org/W2116148865","https://openalex.org/W2151693816","https://openalex.org/W2154332973","https://openalex.org/W2610857016","https://openalex.org/W6647524797","https://openalex.org/W6659393017","https://openalex.org/W6669955640","https://openalex.org/W6677605016"],"related_works":["https://openalex.org/W3037466935","https://openalex.org/W3204684126","https://openalex.org/W3117290964","https://openalex.org/W1594413663","https://openalex.org/W189401716","https://openalex.org/W2019216770","https://openalex.org/W2574250816","https://openalex.org/W2898570308","https://openalex.org/W2544904580","https://openalex.org/W2165420145"],"abstract_inverted_index":{"This":[0],"paper":[1],"discusses":[2],"a":[3,29],"new":[4],"greedy":[5],"algorithm":[6,36],"for":[7,52],"solving":[8],"the":[9,41,44],"sparse":[10,53],"approximation":[11],"problem":[12],"over":[13],"quasiincoherent":[14],"dictionaries.":[15,34],"These":[16],"dictionaries":[17],"consist":[18],"of":[19,32,43],"waveforms":[20],"that":[21],"are":[22,59],"uncorrelated":[23],"\"on":[24],"average,\"":[25],"and":[26],"they":[27],"provide":[28],"natural":[30],"generalization":[31],"incoherent":[33],"The":[35],"provides":[37],"strong":[38],"guarantees":[39],"on":[40],"quality":[42],"approximations":[45],"it":[46],"produces,":[47],"unlike":[48],"most":[49],"other":[50],"methods":[51],"approximation.":[54],"Moreover,":[55],"very":[56],"efficient":[57],"implementations":[58],"possible":[60],"via":[61],"approximate":[62],"nearest-neighbor":[63],"data":[64],"structures.":[65]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":15},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":3}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
