{"id":"https://openalex.org/W1950971366","doi":"https://doi.org/10.1109/iwssip.2015.7313922","title":"Learning a joint discriminative-generative model for action recognition","display_name":"Learning a joint discriminative-generative model for action recognition","publication_year":2015,"publication_date":"2015-09-01","ids":{"openalex":"https://openalex.org/W1950971366","doi":"https://doi.org/10.1109/iwssip.2015.7313922","mag":"1950971366"},"language":"en","primary_location":{"id":"doi:10.1109/iwssip.2015.7313922","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwssip.2015.7313922","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 International Conference on Systems, Signals and Image Processing (IWSSIP)","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/A5055964762","display_name":"Ioannis Alexiou","orcid":null},"institutions":[{"id":"https://openalex.org/I124357947","display_name":"University of London","ror":"https://ror.org/04cw6st05","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947"]},{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Ioannis Alexiou","raw_affiliation_strings":["School of Electronic Engineering and Computer Science, University of London, UK","[School of Electronic Engineering & Computer Science, Queen Mary Univ. of London, UK]"],"affiliations":[{"raw_affiliation_string":"School of Electronic Engineering and Computer Science, University of London, UK","institution_ids":["https://openalex.org/I124357947"]},{"raw_affiliation_string":"[School of Electronic Engineering & Computer Science, Queen Mary Univ. of London, UK]","institution_ids":["https://openalex.org/I166337079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014436524","display_name":"Tao Xiang","orcid":"https://orcid.org/0000-0002-2530-1059"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Tao Xiang","raw_affiliation_strings":["Vision Semantics Ltd, UK"],"affiliations":[{"raw_affiliation_string":"Vision Semantics Ltd, UK","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5039302902","display_name":"Shaogang Gong","orcid":"https://orcid.org/0000-0001-8156-2299"},"institutions":[{"id":"https://openalex.org/I124357947","display_name":"University of London","ror":"https://ror.org/04cw6st05","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947"]},{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Shaogang Gong","raw_affiliation_strings":["School of Electronic Engineering and Computer Science, University of London, UK","[School of Electronic Engineering & Computer Science, Queen Mary Univ. of London, UK]"],"affiliations":[{"raw_affiliation_string":"School of Electronic Engineering and Computer Science, University of London, UK","institution_ids":["https://openalex.org/I124357947"]},{"raw_affiliation_string":"[School of Electronic Engineering & Computer Science, Queen Mary Univ. of London, UK]","institution_ids":["https://openalex.org/I166337079"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5055964762"],"corresponding_institution_ids":["https://openalex.org/I124357947","https://openalex.org/I166337079"],"apc_list":null,"apc_paid":null,"fwci":0.3682,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.6721328,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10812","display_name":"Human Pose and Action Recognition","score":1.0,"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/T10812","display_name":"Human Pose and Action Recognition","score":1.0,"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/T12290","display_name":"Human Motion and Animation","score":0.9991000294685364,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T12740","display_name":"Gait Recognition and Analysis","score":0.9987999796867371,"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/discriminative-model","display_name":"Discriminative model","score":0.8936411142349243},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7532362937927246},{"id":"https://openalex.org/keywords/generative-model","display_name":"Generative model","score":0.6906391382217407},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.6843136548995972},{"id":"https://openalex.org/keywords/hidden-markov-model","display_name":"Hidden Markov model","score":0.647761881351471},{"id":"https://openalex.org/keywords/generative-grammar","display_name":"Generative grammar","score":0.6178763508796692},{"id":"https://openalex.org/keywords/robustness","display_name":"Robustness (evolution)","score":0.5745565891265869},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.5677337050437927},{"id":"https://openalex.org/keywords/action-recognition","display_name":"Action recognition","score":0.5203487277030945},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.5069947242736816},{"id":"https://openalex.org/keywords/kernel","display_name":"Kernel (algebra)","score":0.5032822489738464},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.19775640964508057},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1397605836391449}],"concepts":[{"id":"https://openalex.org/C97931131","wikidata":"https://www.wikidata.org/wiki/Q5282087","display_name":"Discriminative model","level":2,"score":0.8936411142349243},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7532362937927246},{"id":"https://openalex.org/C167966045","wikidata":"https://www.wikidata.org/wiki/Q5532625","display_name":"Generative model","level":3,"score":0.6906391382217407},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.6843136548995972},{"id":"https://openalex.org/C23224414","wikidata":"https://www.wikidata.org/wiki/Q176769","display_name":"Hidden Markov model","level":2,"score":0.647761881351471},{"id":"https://openalex.org/C39890363","wikidata":"https://www.wikidata.org/wiki/Q36108","display_name":"Generative grammar","level":2,"score":0.6178763508796692},{"id":"https://openalex.org/C63479239","wikidata":"https://www.wikidata.org/wiki/Q7353546","display_name":"Robustness (evolution)","level":3,"score":0.5745565891265869},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.5677337050437927},{"id":"https://openalex.org/C2987834672","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Action recognition","level":3,"score":0.5203487277030945},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.5069947242736816},{"id":"https://openalex.org/C74193536","wikidata":"https://www.wikidata.org/wiki/Q574844","display_name":"Kernel (algebra)","level":2,"score":0.5032822489738464},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.19775640964508057},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1397605836391449},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iwssip.2015.7313922","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwssip.2015.7313922","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 International Conference on Systems, Signals and Image Processing (IWSSIP)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","score":0.7200000286102295,"id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W24089286","https://openalex.org/W1595717062","https://openalex.org/W1880262756","https://openalex.org/W2019660985","https://openalex.org/W2071767846","https://openalex.org/W2099614498","https://openalex.org/W2101666158","https://openalex.org/W2105101328","https://openalex.org/W2112680570","https://openalex.org/W2119350939","https://openalex.org/W2130843763","https://openalex.org/W2135024229","https://openalex.org/W2136888950","https://openalex.org/W2147289866","https://openalex.org/W2164372777","https://openalex.org/W2181967766","https://openalex.org/W6600983433","https://openalex.org/W6635755983","https://openalex.org/W6639619044","https://openalex.org/W6675198320","https://openalex.org/W6680298013"],"related_works":["https://openalex.org/W4396941953","https://openalex.org/W2093104230","https://openalex.org/W2987280934","https://openalex.org/W4390874210","https://openalex.org/W4384918963","https://openalex.org/W4365211920","https://openalex.org/W2128027845","https://openalex.org/W3014948380","https://openalex.org/W4386184937","https://openalex.org/W4241564561"],"abstract_inverted_index":{"An":[0],"action":[1,20,24,42,97,119,166],"consists":[2],"of":[3,6,49,84,111,149,159,174],"a":[4,102,117,133],"sequence":[5],"instantaneous":[7],"motion":[8],"patterns":[9],"whose":[10],"temporal":[11,47,59],"ordering":[12],"contains":[13],"critical":[14],"information":[15],"especially":[16],"for":[17,53,93],"distinguishing":[18],"fine-grained":[19],"categories.":[21],"However,":[22],"existing":[23],"recognition":[25,167],"methods":[26,168],"are":[27,78],"dominated":[28],"by":[29,96,114,146],"discriminative":[30,127],"classifiers":[31],"such":[32,58,69],"as":[33,70],"kernel":[34,129],"machines":[35],"or":[36],"metric":[37],"learning":[38,116,130],"with":[39],"Bag-of-Words":[40],"(BoW)":[41],"representations.":[43],"They":[44],"ignore":[45],"the":[46,82,85,109,139,142,150,157,160,164],"structures":[48,60],"actions":[50,148],"in":[51],"exchange":[52],"robustness":[54],"against":[55],"noise.":[56],"Although":[57],"can":[61],"be":[62],"modelled":[63],"explicitly":[64],"using":[65,169],"dynamic":[66,134],"generative":[67,76,118,135],"models":[68,77],"Hidden":[71],"Markov":[72],"Models":[73],"(HMMs),":[74],"these":[75],"designed":[79],"to":[80,107],"maximise":[81],"likelihood":[83],"data":[86],"therefore":[87],"providing":[88],"no":[89],"guarantee":[90],"on":[91,126],"suitability":[92],"discrimination":[94],"required":[95],"recognition.":[98],"In":[99],"this":[100],"work,":[101],"novel":[103],"approach":[104,123],"is":[105,124,153],"proposed":[106,161],"explore":[108],"best":[110],"both":[112],"worlds":[113],"discriminatively":[115],"model.":[120],"Specifically,":[121],"our":[122],"based":[125],"Fisher":[128],"which":[131],"learns":[132],"model":[136,162],"so":[137],"that":[138],"distance":[140],"between":[141],"log-likelihood":[143],"gradients":[144],"induced":[145],"two":[147,170],"same":[151],"class":[152],"minimised.":[154],"We":[155],"demonstrate":[156],"advantages":[158],"over":[163],"state-of-the-art":[165],"challenging":[171],"benchmark":[172],"datasets":[173],"complex":[175],"actions.":[176]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2016,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
