{"id":"https://openalex.org/W3155085426","doi":"https://doi.org/10.1109/gcwkshps56602.2022.10008537","title":"Self-Supervised WiFi-Based Activity Recognition","display_name":"Self-Supervised WiFi-Based Activity Recognition","publication_year":2022,"publication_date":"2022-12-04","ids":{"openalex":"https://openalex.org/W3155085426","doi":"https://doi.org/10.1109/gcwkshps56602.2022.10008537","mag":"3155085426"},"language":"en","primary_location":{"id":"doi:10.1109/gcwkshps56602.2022.10008537","is_oa":false,"landing_page_url":"https://doi.org/10.1109/gcwkshps56602.2022.10008537","pdf_url":null,"source":{"id":"https://openalex.org/S4363605011","display_name":"2022 IEEE Globecom Workshops (GC Wkshps)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2022 IEEE Globecom Workshops (GC Wkshps)","raw_type":"proceedings-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/A5082438256","display_name":"Mohammud Junaid Bocus","orcid":"https://orcid.org/0000-0001-7843-3445"},"institutions":[{"id":"https://openalex.org/I36234482","display_name":"University of Bristol","ror":"https://ror.org/0524sp257","country_code":"GB","type":"education","lineage":["https://openalex.org/I36234482"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Mohammud J. Bocus","raw_affiliation_strings":["University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","institution_ids":["https://openalex.org/I36234482"]},{"raw_affiliation_string":"School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK","institution_ids":["https://openalex.org/I36234482"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005964518","display_name":"Hok-Shing Lau","orcid":null},"institutions":[{"id":"https://openalex.org/I36234482","display_name":"University of Bristol","ror":"https://ror.org/0524sp257","country_code":"GB","type":"education","lineage":["https://openalex.org/I36234482"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Hok-Shing Lau","raw_affiliation_strings":["University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","institution_ids":["https://openalex.org/I36234482"]},{"raw_affiliation_string":"School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK","institution_ids":["https://openalex.org/I36234482"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077095301","display_name":"Ryan McConville","orcid":"https://orcid.org/0000-0002-7708-3110"},"institutions":[{"id":"https://openalex.org/I36234482","display_name":"University of Bristol","ror":"https://ror.org/0524sp257","country_code":"GB","type":"education","lineage":["https://openalex.org/I36234482"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Ryan McConville","raw_affiliation_strings":["University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","institution_ids":["https://openalex.org/I36234482"]},{"raw_affiliation_string":"School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK","institution_ids":["https://openalex.org/I36234482"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071769747","display_name":"Robert J. Piechocki","orcid":"https://orcid.org/0000-0002-4879-1206"},"institutions":[{"id":"https://openalex.org/I36234482","display_name":"University of Bristol","ror":"https://ror.org/0524sp257","country_code":"GB","type":"education","lineage":["https://openalex.org/I36234482"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Robert J. Piechocki","raw_affiliation_strings":["University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","institution_ids":["https://openalex.org/I36234482"]},{"raw_affiliation_string":"School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK","institution_ids":["https://openalex.org/I36234482"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5028764929","display_name":"Ra\u00fal Santos\u2010Rodr\u00edguez","orcid":"https://orcid.org/0000-0001-9576-3905"},"institutions":[{"id":"https://openalex.org/I36234482","display_name":"University of Bristol","ror":"https://ror.org/0524sp257","country_code":"GB","type":"education","lineage":["https://openalex.org/I36234482"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Raul Santos-Rodriguez","raw_affiliation_strings":["University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Bristol,School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths,UK","institution_ids":["https://openalex.org/I36234482"]},{"raw_affiliation_string":"School of Computer Science, Electrical and Electronic Engineering, and Engineering Maths, University of Bristol, UK","institution_ids":["https://openalex.org/I36234482"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":4.7842,"has_fulltext":false,"cited_by_count":15,"citation_normalized_percentile":{"value":0.96800836,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"552","last_page":"557"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T11158","display_name":"Wireless Networks and Protocols","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9962999820709229,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7300589084625244},{"id":"https://openalex.org/keywords/activity-recognition","display_name":"Activity recognition","score":0.7064552903175354},{"id":"https://openalex.org/keywords/wearable-computer","display_name":"Wearable computer","score":0.6747536659240723},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.5735759735107422},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.5702757239341736},{"id":"https://openalex.org/keywords/human\u2013computer-interaction","display_name":"Human\u2013computer interaction","score":0.4344046115875244},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4325523376464844},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.4118947386741638},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.3317905068397522},{"id":"https://openalex.org/keywords/embedded-system","display_name":"Embedded system","score":0.1682225465774536},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11087676882743835}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7300589084625244},{"id":"https://openalex.org/C121687571","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Activity recognition","level":2,"score":0.7064552903175354},{"id":"https://openalex.org/C150594956","wikidata":"https://www.wikidata.org/wiki/Q1334829","display_name":"Wearable computer","level":2,"score":0.6747536659240723},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.5735759735107422},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.5702757239341736},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.4344046115875244},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4325523376464844},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.4118947386741638},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.3317905068397522},{"id":"https://openalex.org/C149635348","wikidata":"https://www.wikidata.org/wiki/Q193040","display_name":"Embedded system","level":1,"score":0.1682225465774536},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11087676882743835},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/gcwkshps56602.2022.10008537","is_oa":false,"landing_page_url":"https://doi.org/10.1109/gcwkshps56602.2022.10008537","pdf_url":null,"source":{"id":"https://openalex.org/S4363605011","display_name":"2022 IEEE Globecom Workshops (GC Wkshps)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2022 IEEE Globecom Workshops (GC Wkshps)","raw_type":"proceedings-article"},{"id":"pmh:oai:research-information.bris.ac.uk:publications/5831c429-b788-4522-a5d7-3839f307bab8","is_oa":false,"landing_page_url":"https://research-information.bris.ac.uk/en/publications/5831c429-b788-4522-a5d7-3839f307bab8","pdf_url":null,"source":{"id":"https://openalex.org/S4306400895","display_name":"Bristol Research (University of Bristol)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I36234482","host_organization_name":"University of Bristol","host_organization_lineage":["https://openalex.org/I36234482"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":""}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","score":0.46000000834465027,"id":"https://metadata.un.org/sdg/4"}],"awards":[{"id":"https://openalex.org/G6082034655","display_name":null,"funder_award_id":"EP/R018677/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G7629027287","display_name":null,"funder_award_id":"EP/V024817/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"}],"funders":[{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":40,"referenced_works":["https://openalex.org/W1598866093","https://openalex.org/W1686810756","https://openalex.org/W2089695767","https://openalex.org/W2194775991","https://openalex.org/W2270470215","https://openalex.org/W2734730826","https://openalex.org/W2743415265","https://openalex.org/W2769112066","https://openalex.org/W2790414609","https://openalex.org/W2842511635","https://openalex.org/W2897132279","https://openalex.org/W2898186212","https://openalex.org/W2924475988","https://openalex.org/W2938652275","https://openalex.org/W2952065976","https://openalex.org/W2962902933","https://openalex.org/W2981356320","https://openalex.org/W3005680577","https://openalex.org/W3015505405","https://openalex.org/W3040011801","https://openalex.org/W3044060664","https://openalex.org/W3092213674","https://openalex.org/W3092694705","https://openalex.org/W3093247745","https://openalex.org/W3094503863","https://openalex.org/W3098250197","https://openalex.org/W3103272945","https://openalex.org/W3107005520","https://openalex.org/W3108655343","https://openalex.org/W3132988742","https://openalex.org/W3172224317","https://openalex.org/W3177183117","https://openalex.org/W3184978184","https://openalex.org/W3186182689","https://openalex.org/W3206448913","https://openalex.org/W4287812705","https://openalex.org/W4297808394","https://openalex.org/W6774314701","https://openalex.org/W6776700526","https://openalex.org/W6786401209"],"related_works":["https://openalex.org/W3195649134","https://openalex.org/W2281498195","https://openalex.org/W4390516098","https://openalex.org/W2181948922","https://openalex.org/W2384362569","https://openalex.org/W2017526120","https://openalex.org/W2610664080","https://openalex.org/W2142795561","https://openalex.org/W2117913171","https://openalex.org/W2582769230"],"abstract_inverted_index":{"Traditional":[0],"approaches":[1,47],"to":[2,15,50,66,148],"activity":[3,36,68,133],"recognition":[4,37,69,134],"involve":[5],"the":[6,32,60,76,114,128,169],"use":[7,61],"of":[8,34,54,62,75,104,130,162],"wearable":[9],"sensors":[10],"or":[11],"cameras":[12],"in":[13,38,85,96,152,168],"order":[14],"recognise":[16],"human":[17],"activities.":[18,111],"In":[19],"this":[20],"work,":[21],"we":[22],"extract":[23],"fine-grained":[24],"physical":[25],"layer":[26],"information":[27],"from":[28],"WiFi":[29,56,78,131],"devices":[30],"for":[31],"purpose":[33],"passive":[35],"indoor":[39],"environments.":[40],"While":[41],"such":[42],"data":[43],"is":[44],"ubiquitous,":[45],"few":[46],"are":[48,166],"designed":[49],"utilise":[51],"large":[52],"amounts":[53],"unlabelled":[55],"data.":[57],"We":[58,88,112],"propose":[59],"selfsupervised":[63],"contrastive":[64,116],"learning":[65,117,137],"improve":[67],"performance":[70],"when":[71,159],"using":[72],"multiple":[73],"views":[74],"transmitted":[77],"signal":[79],"captured":[80],"by":[81],"synchronised":[82],"receivers":[83],"deployed":[84],"different":[86,105],"positions.":[87],"conduct":[89],"extensive":[90],"Human":[91],"Activity":[92],"Recognition":[93],"(HAR)":[94],"experiments":[95],"two":[97],"furnished":[98],"office":[99],"rooms,":[100],"whereby":[101],"six":[102,109],"participants":[103],"age":[106],"groups":[107],"performed":[108],"day-to-day":[110],"compare":[113],"proposed":[115],"system":[118],"with":[119,142],"conventional":[120],"non-contrastive":[121],"systems":[122],"and":[123],"observe":[124],"significant":[125],"improvement":[126],"on":[127],"task":[129],"based":[132],"under":[135],"few-shot":[136],"scenarios.":[138],"Namely,":[139],"contrastively":[140],"pretraining":[141],"an":[143],"AlexNet-based":[144],"backbone":[145],"encoder":[146],"led":[147],"a":[149],"22%":[150],"increase":[151],"macro":[153],"F":[154],"<inf":[155],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[156],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">1</inf>":[157],"score":[158],"only":[160],"1.29%":[161],"labelled":[163],"training":[164],"samples":[165],"considered":[167],"fine-tuning":[170],"stage.":[171]},"counts_by_year":[{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
