{"id":"https://openalex.org/W1968151122","doi":"https://doi.org/10.1145/1454659.1454688","title":"Missing values in user activity classification applications utilizing wireless sensors","display_name":"Missing values in user activity classification applications utilizing wireless sensors","publication_year":2008,"publication_date":"2008-10-30","ids":{"openalex":"https://openalex.org/W1968151122","doi":"https://doi.org/10.1145/1454659.1454688","mag":"1968151122"},"language":"en","primary_location":{"id":"doi:10.1145/1454659.1454688","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1454659.1454688","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 6th ACM international symposium on Mobility management and wireless access","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/A5003364883","display_name":"Ivan Avdouevski","orcid":null},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Ivan Avdouevski","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland","Tampere University of Technology , Tampere, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Tampere University of Technology , Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011488810","display_name":"Riitta Kerminen","orcid":null},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Riitta Kerminen","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland","Tampere University of Technology , Tampere, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Tampere University of Technology , Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086227222","display_name":"Jarmo Makkonen","orcid":null},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Jarmo Makkonen","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland","Tampere University of Technology , Tampere, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Tampere University of Technology , Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063514228","display_name":"Ari Visa","orcid":"https://orcid.org/0000-0002-8895-2879"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Ari Visa","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland","Tampere University of Technology , Tampere, Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]},{"raw_affiliation_string":"Tampere University of Technology , Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.355,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.62059133,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"151","last_page":"155"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9973999857902527,"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/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.9973999857902527,"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/T10080","display_name":"Energy Efficient Wireless Sensor Networks","score":0.9950000047683716,"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9926000237464905,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/wireless-sensor-network","display_name":"Wireless sensor network","score":0.7366761565208435},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7157269716262817},{"id":"https://openalex.org/keywords/missing-data","display_name":"Missing data","score":0.7155187129974365},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.584761917591095},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5185821056365967},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.49296069145202637},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.4623163342475891},{"id":"https://openalex.org/keywords/data-transmission","display_name":"Data transmission","score":0.46008965373039246},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4404734969139099},{"id":"https://openalex.org/keywords/key-distribution-in-wireless-sensor-networks","display_name":"Key distribution in wireless sensor networks","score":0.41330578923225403},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.41189587116241455},{"id":"https://openalex.org/keywords/wireless-network","display_name":"Wireless network","score":0.40023326873779297},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.17447510361671448},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17090246081352234}],"concepts":[{"id":"https://openalex.org/C24590314","wikidata":"https://www.wikidata.org/wiki/Q336038","display_name":"Wireless sensor network","level":2,"score":0.7366761565208435},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7157269716262817},{"id":"https://openalex.org/C9357733","wikidata":"https://www.wikidata.org/wiki/Q6878417","display_name":"Missing data","level":2,"score":0.7155187129974365},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.584761917591095},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5185821056365967},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.49296069145202637},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.4623163342475891},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.46008965373039246},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4404734969139099},{"id":"https://openalex.org/C41971633","wikidata":"https://www.wikidata.org/wiki/Q6398155","display_name":"Key distribution in wireless sensor networks","level":4,"score":0.41330578923225403},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.41189587116241455},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.40023326873779297},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.17447510361671448},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17090246081352234}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/1454659.1454688","is_oa":false,"landing_page_url":"https://doi.org/10.1145/1454659.1454688","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 6th ACM international symposium on Mobility management and wireless access","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.8100000023841858}],"awards":[],"funders":[{"id":"https://openalex.org/F4320321855","display_name":"Tekes","ror":"https://ror.org/02ag8cq23"},{"id":"https://openalex.org/F4320324208","display_name":"Teknologian Tutkimuskeskus VTT","ror":"https://ror.org/04b181w54"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1564660545","https://openalex.org/W1722975166","https://openalex.org/W2034256172","https://openalex.org/W2105046342","https://openalex.org/W2109157344","https://openalex.org/W2117811484","https://openalex.org/W2127127580","https://openalex.org/W2129480985","https://openalex.org/W2140190241","https://openalex.org/W2147953023","https://openalex.org/W2148217011","https://openalex.org/W2799061466","https://openalex.org/W4205687621"],"related_works":["https://openalex.org/W4380150146","https://openalex.org/W3024870410","https://openalex.org/W2410652950","https://openalex.org/W4283773154","https://openalex.org/W3139174110","https://openalex.org/W4289597203","https://openalex.org/W2085630472","https://openalex.org/W1977098485","https://openalex.org/W4285201053","https://openalex.org/W2753779043"],"abstract_inverted_index":{"Wireless":[0],"sensor":[1,44,60,88],"networks":[2,45],"offer":[3],"a":[4,28,59,67,77],"new":[5],"and":[6,66],"inexpensive":[7],"way":[8],"to":[9,33,39],"gather":[10],"data.":[11],"Unfortunately,":[12],"the":[13,85,100],"short":[14],"communication":[15],"range":[16],"together":[17],"with":[18,35,76],"distortions":[19],"cause":[20],"corruption":[21],"in":[22,42,80,91,102],"data":[23,37,56,83],"transmission.":[24],"In":[25],"this":[26],"paper":[27],"novel":[29],"approach":[30],"is":[31],"proposed":[32,51],"deal":[34],"missing":[36,90,98],"due":[38],"transmission":[40],"problems":[41],"wireless":[43],"for":[46],"user":[47],"activity":[48],"classification.":[49],"The":[50],"method":[52],"was":[53,71,89,104],"tested":[54],"on":[55],"gathered":[57],"by":[58],"network":[61],"consisting":[62],"of":[63,73,97],"two":[64],"sensors":[65],"GPS":[68],"receiver.":[69],"It":[70],"capable":[72],"performing":[74],"classification":[75],"1%":[78],"drop":[79,101],"accuracy":[81,103],"when":[82],"from":[84],"more":[86],"informative":[87],"2-minute":[92],"bursts.":[93],"For":[94],"5-minute":[95],"bursts":[96],"data,":[99],"5%.":[105]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}