{"id":"https://openalex.org/W2109289209","doi":"https://doi.org/10.14778/1687627.1687645","title":"Online piece-wise linear approximation of numerical streams with precision guarantees","display_name":"Online piece-wise linear approximation of numerical streams with precision guarantees","publication_year":2009,"publication_date":"2009-08-01","ids":{"openalex":"https://openalex.org/W2109289209","doi":"https://doi.org/10.14778/1687627.1687645","mag":"2109289209"},"language":"en","primary_location":{"id":"doi:10.14778/1687627.1687645","is_oa":false,"landing_page_url":"https://doi.org/10.14778/1687627.1687645","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://infoscience.epfl.ch/record/151893","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5074464488","display_name":"Hazem Elmeleegy","orcid":null},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Hazem Elmeleegy","raw_affiliation_strings":["Purdue University"],"affiliations":[{"raw_affiliation_string":"Purdue University","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089912733","display_name":"Ahmed K. Elmagarmid","orcid":"https://orcid.org/0000-0002-0044-458X"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ahmed K. Elmagarmid","raw_affiliation_strings":["Purdue University"],"affiliations":[{"raw_affiliation_string":"Purdue University","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5030726412","display_name":"Emmanuel Cecchet","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Emmanuel Cecchet","raw_affiliation_strings":["University of Massachusetts"],"affiliations":[{"raw_affiliation_string":"University of Massachusetts","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000123743","display_name":"Walid G. Aref","orcid":"https://orcid.org/0000-0001-8169-7775"},"institutions":[{"id":"https://openalex.org/I219193219","display_name":"Purdue University West Lafayette","ror":"https://ror.org/02dqehb95","country_code":"US","type":"education","lineage":["https://openalex.org/I219193219"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Walid G. Aref","raw_affiliation_strings":["Purdue University"],"affiliations":[{"raw_affiliation_string":"Purdue University","institution_ids":["https://openalex.org/I219193219"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5007706911","display_name":"Willy Zwaenepoel","orcid":"https://orcid.org/0000-0002-4182-6920"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Willy Zwaenepoel","raw_affiliation_strings":["EPFL"],"affiliations":[{"raw_affiliation_string":"EPFL","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5074464488"],"corresponding_institution_ids":["https://openalex.org/I219193219"],"apc_list":null,"apc_paid":null,"fwci":8.6223,"has_fulltext":false,"cited_by_count":97,"citation_normalized_percentile":{"value":0.97132635,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"2","issue":"1","first_page":"145","last_page":"156"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11220","display_name":"Water Systems and Optimization","score":0.9890000224113464,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"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/T11220","display_name":"Water Systems and Optimization","score":0.9890000224113464,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"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/T11034","display_name":"Digital Filter Design and Implementation","score":0.9776999950408936,"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/T11512","display_name":"Anomaly Detection Techniques and Applications","score":0.9728000164031982,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/swing","display_name":"Swing","score":0.7252031564712524},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.682280421257019},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.6302642822265625},{"id":"https://openalex.org/keywords/piecewise-linear-function","display_name":"Piecewise linear function","score":0.5706411600112915},{"id":"https://openalex.org/keywords/piecewise","display_name":"Piecewise","score":0.5480743050575256},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5340232849121094},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.4748941957950592},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.46797803044319153},{"id":"https://openalex.org/keywords/line","display_name":"Line (geometry)","score":0.4536861181259155},{"id":"https://openalex.org/keywords/linear-filter","display_name":"Linear filter","score":0.44126221537590027},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.4140198528766632},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3574282228946686},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2518201470375061},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.1096324622631073},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.08831122517585754}],"concepts":[{"id":"https://openalex.org/C65655974","wikidata":"https://www.wikidata.org/wiki/Q14867674","display_name":"Swing","level":2,"score":0.7252031564712524},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.682280421257019},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.6302642822265625},{"id":"https://openalex.org/C17095337","wikidata":"https://www.wikidata.org/wiki/Q2375229","display_name":"Piecewise linear function","level":2,"score":0.5706411600112915},{"id":"https://openalex.org/C164660894","wikidata":"https://www.wikidata.org/wiki/Q2037833","display_name":"Piecewise","level":2,"score":0.5480743050575256},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5340232849121094},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.4748941957950592},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.46797803044319153},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.4536861181259155},{"id":"https://openalex.org/C139722471","wikidata":"https://www.wikidata.org/wiki/Q2619517","display_name":"Linear filter","level":3,"score":0.44126221537590027},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.4140198528766632},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3574282228946686},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2518201470375061},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.1096324622631073},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.08831122517585754},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","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":[],"locations_count":5,"locations":[{"id":"doi:10.14778/1687627.1687645","is_oa":false,"landing_page_url":"https://doi.org/10.14778/1687627.1687645","pdf_url":null,"source":{"id":"https://openalex.org/S4210226185","display_name":"Proceedings of the VLDB Endowment","issn_l":"2150-8097","issn":["2150-8097"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319798","host_organization_name":"Association for Computing Machinery","host_organization_lineage":["https://openalex.org/P4310319798"],"host_organization_lineage_names":["Association for Computing Machinery"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the VLDB Endowment","raw_type":"journal-article"},{"id":"pmh:oai:docs.lib.purdue.edu:ccpubs-1014","is_oa":false,"landing_page_url":"https://docs.lib.purdue.edu/ccpubs/33","pdf_url":null,"source":{"id":"https://openalex.org/S4377196310","display_name":"Purdue e-Pubs (Purdue University System)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2801333002","host_organization_name":"Purdue University System","host_organization_lineage":["https://openalex.org/I2801333002"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Cyber Center Publications","raw_type":"text"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.147.9165","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.147.9165","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.cs.umass.edu/~lass/papers/pdf/online_vldb09.pdf","raw_type":"text"},{"id":"pmh:oai:infoscience.epfl.ch:151893","is_oa":true,"landing_page_url":"http://infoscience.epfl.ch/record/151893","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},{"id":"pmh:oai:infoscience.tind.io:151893","is_oa":true,"landing_page_url":"https://infoscience.epfl.ch/handle/20.500.14299/53922","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"conference proceedings"}],"best_oa_location":{"id":"pmh:oai:infoscience.epfl.ch:151893","is_oa":true,"landing_page_url":"http://infoscience.epfl.ch/record/151893","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},"sustainable_development_goals":[{"score":0.6399999856948853,"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W15130666","https://openalex.org/W1510252230","https://openalex.org/W1604499924","https://openalex.org/W2004844840","https://openalex.org/W2042800588","https://openalex.org/W2042961981","https://openalex.org/W2062735494","https://openalex.org/W2081756696","https://openalex.org/W2099708664","https://openalex.org/W2101056899","https://openalex.org/W2107633943","https://openalex.org/W2110414201","https://openalex.org/W2115366404","https://openalex.org/W2126982545","https://openalex.org/W2132461362","https://openalex.org/W2140115873","https://openalex.org/W2143522309","https://openalex.org/W2148034761","https://openalex.org/W2148588185","https://openalex.org/W2161569281","https://openalex.org/W2167396179","https://openalex.org/W2185331252","https://openalex.org/W2398660820","https://openalex.org/W2489143987","https://openalex.org/W2613248270","https://openalex.org/W4232534713","https://openalex.org/W4251391716","https://openalex.org/W6675821632","https://openalex.org/W6686224502"],"related_works":["https://openalex.org/W2133947431","https://openalex.org/W3182827720","https://openalex.org/W1596838019","https://openalex.org/W2490196280","https://openalex.org/W3208509670","https://openalex.org/W2100864966","https://openalex.org/W2109304297","https://openalex.org/W2083709218","https://openalex.org/W4323366562","https://openalex.org/W1898627281"],"abstract_inverted_index":{"Continuous":[0],"\"always-on\"":[1],"monitoring":[2],"is":[3],"beneficial":[4],"for":[5,65,73,123],"a":[6,13,25,48,51,56,95,100],"number":[7,27],"of":[8,18,28,61,80,87,102,110,128,149],"applications,":[9],"but":[10],"potentially":[11],"imposes":[12],"high":[14],"load":[15],"in":[16,85,126,134],"terms":[17,86,127],"communication,":[19],"storage":[20],"and":[21,42,68,82,113],"power":[22,90],"consumption":[23],"when":[24],"large":[26],"variables":[29],"need":[30],"to":[31,94,143],"be":[32],"monitored.":[33],"We":[34,76],"introduce":[35],"two":[36],"new":[37],"filtering":[38,125],"techniques,":[39],"swing":[40,66,81],"filters":[41,67,84],"slide":[43,74,83,132],"filters,":[44,140],"that":[45],"represent":[46],"within":[47],"prescribed":[49],"precision":[50,114],"time-varying":[52],"numerical":[53],"signal":[54,111],"by":[55,91],"piecewise":[57],"linear":[58],"function,":[59],"consisting":[60],"connected":[62],"line":[63,71],"segments":[64,72],"(mostly)":[69],"disconnected":[70],"filters.":[75],"demonstrate":[77],"the":[78,116,120,147,150],"effectiveness":[79],"their":[88],"compression":[89],"applying":[92],"them":[93],"real-life":[96],"data":[97,104,129],"set":[98],"plus":[99],"variety":[101],"synthetic":[103],"sets.":[105],"For":[106],"nearly":[107],"all":[108,138],"combinations":[109],"behavior":[112],"requirements,":[115],"proposed":[117],"techniques":[118],"outperform":[119],"earlier":[121],"approaches":[122],"online":[124],"reduction.":[130],"The":[131],"filter,":[133],"particular,":[135],"consistently":[136],"dominates":[137],"other":[139],"with":[141],"up":[142],"twofold":[144],"improvement":[145],"over":[146],"best":[148],"previous":[151],"techniques.":[152]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":11},{"year":2024,"cited_by_count":13},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":15},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":5},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":4},{"year":2012,"cited_by_count":4}],"updated_date":"2026-04-05T17:49:38.594831","created_date":"2025-10-10T00:00:00"}