{"id":"https://openalex.org/W2150140581","doi":"https://doi.org/10.1109/tim.2011.2123250","title":"Relative Thresholding With Under-Mattress Pressure Sensors to Detect Central Apnea","display_name":"Relative Thresholding With Under-Mattress Pressure Sensors to Detect Central Apnea","publication_year":2011,"publication_date":"2011-05-03","ids":{"openalex":"https://openalex.org/W2150140581","doi":"https://doi.org/10.1109/tim.2011.2123250","mag":"2150140581"},"language":"en","primary_location":{"id":"doi:10.1109/tim.2011.2123250","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tim.2011.2123250","pdf_url":null,"source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"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 Instrumentation and Measurement","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/A5019634086","display_name":"Daphne Townsend","orcid":null},"institutions":[{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Daphne Townsend","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I67031392"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047919329","display_name":"M. Holtzman","orcid":null},"institutions":[{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Megan Holtzman","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I67031392"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017668310","display_name":"Rafik Goubran","orcid":"https://orcid.org/0000-0003-4087-416X"},"institutions":[{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Rafik Goubran","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I67031392"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044558552","display_name":"Monique Frize","orcid":null},"institutions":[{"id":"https://openalex.org/I153718931","display_name":"University of Ottawa","ror":"https://ror.org/03c4mmv16","country_code":"CA","type":"education","lineage":["https://openalex.org/I153718931"]},{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Monique Frize","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","School of Information Technology and Engineering, University of Ottawa, Ottawa, ONT, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I67031392"]},{"raw_affiliation_string":"School of Information Technology and Engineering, University of Ottawa, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I153718931"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5086309680","display_name":"Frank Knoefel","orcid":"https://orcid.org/0000-0002-5760-4484"},"institutions":[{"id":"https://openalex.org/I153718931","display_name":"University of Ottawa","ror":"https://ror.org/03c4mmv16","country_code":"CA","type":"education","lineage":["https://openalex.org/I153718931"]},{"id":"https://openalex.org/I67031392","display_name":"Carleton University","ror":"https://ror.org/02qtvee93","country_code":"CA","type":"education","lineage":["https://openalex.org/I67031392"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Frank Knoefel","raw_affiliation_strings":["Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","University of Ottawa, Ottawa, ONT, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Systems and Computer Engineering, Carleton University, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I67031392"]},{"raw_affiliation_string":"University of Ottawa, Ottawa, ONT, Canada","institution_ids":["https://openalex.org/I153718931"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.2667,"has_fulltext":false,"cited_by_count":37,"citation_normalized_percentile":{"value":0.87713977,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"60","issue":"10","first_page":"3281","last_page":"3289"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10234","display_name":"Obstructive Sleep Apnea Research","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10234","display_name":"Obstructive Sleep Apnea Research","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9803000092506409,"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/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9793000221252441,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"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/threshold-limit-value","display_name":"Threshold limit value","score":0.6080191731452942},{"id":"https://openalex.org/keywords/apnea","display_name":"Apnea","score":0.5510957837104797},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.46861204504966736},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.44752466678619385},{"id":"https://openalex.org/keywords/thresholding","display_name":"Thresholding","score":0.4336109161376953},{"id":"https://openalex.org/keywords/relative-value","display_name":"Relative value","score":0.432727187871933},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.42942118644714355},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4291059970855713},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.3977268636226654},{"id":"https://openalex.org/keywords/biomedical-engineering","display_name":"Biomedical engineering","score":0.3772527575492859},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.37480056285858154},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.3629264235496521},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.3617042303085327},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.3473758101463318},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.31743019819259644},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.30347007513046265},{"id":"https://openalex.org/keywords/anesthesia","display_name":"Anesthesia","score":0.13024574518203735}],"concepts":[{"id":"https://openalex.org/C64413873","wikidata":"https://www.wikidata.org/wiki/Q21005","display_name":"Threshold limit value","level":2,"score":0.6080191731452942},{"id":"https://openalex.org/C2781326671","wikidata":"https://www.wikidata.org/wiki/Q754424","display_name":"Apnea","level":2,"score":0.5510957837104797},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.46861204504966736},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.44752466678619385},{"id":"https://openalex.org/C191178318","wikidata":"https://www.wikidata.org/wiki/Q2256906","display_name":"Thresholding","level":3,"score":0.4336109161376953},{"id":"https://openalex.org/C201236551","wikidata":"https://www.wikidata.org/wiki/Q7310809","display_name":"Relative value","level":2,"score":0.432727187871933},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.42942118644714355},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4291059970855713},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.3977268636226654},{"id":"https://openalex.org/C136229726","wikidata":"https://www.wikidata.org/wiki/Q327092","display_name":"Biomedical engineering","level":1,"score":0.3772527575492859},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.37480056285858154},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.3629264235496521},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.3617042303085327},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3473758101463318},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.31743019819259644},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.30347007513046265},{"id":"https://openalex.org/C42219234","wikidata":"https://www.wikidata.org/wiki/Q131130","display_name":"Anesthesia","level":1,"score":0.13024574518203735},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","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/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","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/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tim.2011.2123250","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tim.2011.2123250","pdf_url":null,"source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"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 Instrumentation and Measurement","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":28,"referenced_works":["https://openalex.org/W1493662768","https://openalex.org/W1559746312","https://openalex.org/W1561550725","https://openalex.org/W1583881501","https://openalex.org/W1987679119","https://openalex.org/W2019444322","https://openalex.org/W2044884426","https://openalex.org/W2061480717","https://openalex.org/W2069544112","https://openalex.org/W2099120405","https://openalex.org/W2101344621","https://openalex.org/W2109112496","https://openalex.org/W2109753308","https://openalex.org/W2113585271","https://openalex.org/W2125180336","https://openalex.org/W2128109954","https://openalex.org/W2131996083","https://openalex.org/W2132102255","https://openalex.org/W2135360270","https://openalex.org/W2137619789","https://openalex.org/W2152210511","https://openalex.org/W2153700118","https://openalex.org/W2167329491","https://openalex.org/W2167965689","https://openalex.org/W2168656883","https://openalex.org/W2170268036","https://openalex.org/W2884525847","https://openalex.org/W6677240168"],"related_works":["https://openalex.org/W2953058328","https://openalex.org/W1542224353","https://openalex.org/W1661087619","https://openalex.org/W2116854923","https://openalex.org/W2750730210","https://openalex.org/W2236974868","https://openalex.org/W4312766348","https://openalex.org/W2730764323","https://openalex.org/W4382490379","https://openalex.org/W2846133431"],"abstract_inverted_index":{"Unobtrusive":[0],"pressure":[1,48,108],"sensors":[2,109],"can":[3],"be":[4,82],"used":[5],"for":[6],"biological":[7],"monitoring":[8],"and":[9,63,90,128,145],"long-term":[10],"health":[11],"assessment":[12],"in":[13,18,32,163,167],"smart":[14,22,168],"homes.":[15,169],"The":[16,54,73,97,115,153],"challenge":[17],"detecting":[19],"events":[20],"from":[21,107,118],"home":[23],"data":[24],"is":[25,36,143,151],"that":[26],"people":[27],"have":[28],"different":[29,88,113],"mattresses,":[30],"unlike":[31],"hospitals":[33],"where":[34],"bedding":[35],"standardized.":[37],"This":[38],"paper":[39],"proposes":[40],"to":[41,68,81,94,103,124],"model":[42,55],"central":[43],"apneas":[44,80,105],"using":[45],"an":[46],"under-mattress":[47],"sensor":[49],"as":[50],"a":[51,60,69,76,85],"measuring":[52],"instrument.":[53],"uses":[56],"three":[57],"parameters,":[58],"namely,":[59],"relative":[61,77,157],"threshold":[62,78,158],"two":[64],"time":[65],"lengths,":[66],"applied":[67,102,123],"moving":[70],"variance":[71],"signal.":[72],"use":[74,154],"of":[75,87,132,155],"allows":[79],"detected":[83],"under":[84,111],"variety":[86],"conditions":[89],"improves":[91],"results":[92,131],"compared":[93],"hard-coded":[95],"thresholds.":[96],"algorithm":[98],"developed":[99],"herein":[100],"was":[101],"simulated":[104],"collected":[106],"placed":[110],"nine":[112],"mattresses.":[114],"parameters":[116],"determined":[117],"the":[119,125,139,149,156,161],"training":[120],"set":[121,127],"were":[122],"test":[126],"produced":[129],"classification":[130],"0.78":[133],"positive":[134],"predictive":[135],"value":[136],"(PPV)":[137],"if":[138,148],"bed":[140],"occupant's":[141],"position":[142,150],"known":[144],"0.75":[146],"PPV":[147],"unknown.":[152],"approach":[159],"overcomes":[160],"variability":[162],"mattress":[164],"types":[165],"found":[166]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":7},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":7}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
