{"id":"https://openalex.org/W4417131453","doi":"https://doi.org/10.1109/tnnls.2025.3632689","title":"A Systematic Review of Skeleton-Based Action Recognition: Methods, Challenges, and Future Directions","display_name":"A Systematic Review of Skeleton-Based Action Recognition: Methods, Challenges, and Future Directions","publication_year":2025,"publication_date":"2025-12-08","ids":{"openalex":"https://openalex.org/W4417131453","doi":"https://doi.org/10.1109/tnnls.2025.3632689","pmid":"https://pubmed.ncbi.nlm.nih.gov/41359741"},"language":"en","primary_location":{"id":"doi:10.1109/tnnls.2025.3632689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tnnls.2025.3632689","pdf_url":null,"source":{"id":"https://openalex.org/S4210175523","display_name":"IEEE Transactions on Neural Networks and Learning Systems","issn_l":"2162-237X","issn":["2162-237X","2162-2388"],"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 Neural Networks and Learning Systems","raw_type":"journal-article"},"type":"review","indexed_in":["crossref","pubmed"],"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/A5101797028","display_name":"Yi Liu","orcid":"https://orcid.org/0009-0000-7044-9514"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yi Liu","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0009-0000-7044-9514","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101751409","display_name":"Ruyi Liu","orcid":"https://orcid.org/0000-0002-6882-9566"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ruyi Liu","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0000-0002-6882-9566","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057854042","display_name":"Yuzhi Hu","orcid":"https://orcid.org/0000-0002-4794-0935"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuzhi Hu","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109728599","display_name":"Mengyao Wu","orcid":"https://orcid.org/0009-0005-1252-7111"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mengyao Wu","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0009-0005-1252-7111","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019315893","display_name":"Wentian Xin","orcid":"https://orcid.org/0000-0002-0849-6093"},"institutions":[{"id":"https://openalex.org/I43313876","display_name":"Dalian Maritime University","ror":"https://ror.org/002b7nr53","country_code":"CN","type":"education","lineage":["https://openalex.org/I43313876"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wentian Xin","raw_affiliation_strings":["School of Information Science and Technology, Dalian Maritime University, Dalian, China"],"raw_orcid":"https://orcid.org/0000-0002-0849-6093","affiliations":[{"raw_affiliation_string":"School of Information Science and Technology, Dalian Maritime University, Dalian, China","institution_ids":["https://openalex.org/I43313876"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103213763","display_name":"Qiguang Miao","orcid":"https://orcid.org/0000-0001-6766-8310"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qiguang Miao","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0000-0001-6766-8310","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100740522","display_name":"Shuai Wu","orcid":"https://orcid.org/0000-0001-9660-3460"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]},{"id":"https://openalex.org/I4210141776","display_name":"China XD Group (China)","ror":"https://ror.org/04ceqst84","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210141776"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuai Wu","raw_affiliation_strings":["School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0000-0001-9660-3460","affiliations":[{"raw_affiliation_string":"School of Computer Science and Technology, Xi&#x2019;an Key Laboratory of Big Data and Intelligent Vision, Xidian University, Xi&#x2019;an, Shaanxi, China","institution_ids":["https://openalex.org/I149594827","https://openalex.org/I4210141776"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100408780","display_name":"Long Li","orcid":"https://orcid.org/0000-0002-7693-9722"},"institutions":[{"id":"https://openalex.org/I5343935","display_name":"Guilin University of Electronic Technology","ror":"https://ror.org/05arjae42","country_code":"CN","type":"education","lineage":["https://openalex.org/I5343935"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Long Li","raw_affiliation_strings":["Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0000-0002-7693-9722","affiliations":[{"raw_affiliation_string":"Guangxi Key Laboratory of Trusted Software, Guilin University of Electronic Technology, Guilin, China","institution_ids":["https://openalex.org/I5343935"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.0093,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.85882353,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"37","issue":"5","first_page":"2046","last_page":"2065"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10812","display_name":"Human Pose and Action Recognition","score":0.9588000178337097,"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":0.9588000178337097,"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/T11714","display_name":"Multimodal Machine Learning Applications","score":0.006500000134110451,"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":0.0044999998062849045,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/action-recognition","display_name":"Action recognition","score":0.6258999705314636},{"id":"https://openalex.org/keywords/action","display_name":"Action (physics)","score":0.5738000273704529},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.3531000018119812},{"id":"https://openalex.org/keywords/semantics","display_name":"Semantics (computer science)","score":0.2994000017642975},{"id":"https://openalex.org/keywords/facial-recognition-system","display_name":"Facial recognition system","score":0.29120001196861267}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6290000081062317},{"id":"https://openalex.org/C2987834672","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Action recognition","level":3,"score":0.6258999705314636},{"id":"https://openalex.org/C2780791683","wikidata":"https://www.wikidata.org/wiki/Q846785","display_name":"Action (physics)","level":2,"score":0.5738000273704529},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4262999892234802},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.42489999532699585},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.40869998931884766},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.3531000018119812},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.2994000017642975},{"id":"https://openalex.org/C31510193","wikidata":"https://www.wikidata.org/wiki/Q1192553","display_name":"Facial recognition system","level":3,"score":0.29120001196861267},{"id":"https://openalex.org/C2779304628","wikidata":"https://www.wikidata.org/wiki/Q3503480","display_name":"Face (sociological concept)","level":2,"score":0.2865999937057495},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.28349998593330383},{"id":"https://openalex.org/C104114177","wikidata":"https://www.wikidata.org/wiki/Q79782","display_name":"Motion (physics)","level":2,"score":0.2745000123977661}],"mesh":[{"descriptor_ui":"D000069550","descriptor_name":"Machine Learning","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":false},{"descriptor_ui":"D000069550","descriptor_name":"Machine Learning","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":false},{"descriptor_ui":"D000069550","descriptor_name":"Machine Learning","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006802","descriptor_name":"Human Activities","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006802","descriptor_name":"Human Activities","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006802","descriptor_name":"Human Activities","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":true},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000639","qualifier_name":"trends","is_major_topic":true},{"descriptor_ui":"D016571","descriptor_name":"Neural Networks, Computer","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016571","descriptor_name":"Neural Networks, Computer","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016571","descriptor_name":"Neural Networks, Computer","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1109/tnnls.2025.3632689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tnnls.2025.3632689","pdf_url":null,"source":{"id":"https://openalex.org/S4210175523","display_name":"IEEE Transactions on Neural Networks and Learning Systems","issn_l":"2162-237X","issn":["2162-237X","2162-2388"],"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 Neural Networks and Learning Systems","raw_type":"journal-article"},{"id":"pmid:41359741","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/41359741","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE transactions on neural networks and learning systems","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3050234736","display_name":null,"funder_award_id":"KX202061","funder_id":"https://openalex.org/F4320328373","funder_display_name":"National Key Laboratory Foundation of China"},{"id":"https://openalex.org/G6834291205","display_name":null,"funder_award_id":"62272364","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320328373","display_name":"National Key Laboratory Foundation of China","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":161,"referenced_works":["https://openalex.org/W1950788856","https://openalex.org/W1974490141","https://openalex.org/W1978738035","https://openalex.org/W2022917426","https://openalex.org/W2024307315","https://openalex.org/W2027456229","https://openalex.org/W2054041160","https://openalex.org/W2058709726","https://openalex.org/W2062838565","https://openalex.org/W2074989593","https://openalex.org/W2091587625","https://openalex.org/W2112741432","https://openalex.org/W2116411770","https://openalex.org/W2127033666","https://openalex.org/W2138751033","https://openalex.org/W2149241633","https://openalex.org/W2462496837","https://openalex.org/W2493502717","https://openalex.org/W2504418855","https://openalex.org/W2585201059","https://openalex.org/W2591961134","https://openalex.org/W2767556927","https://openalex.org/W2787919227","https://openalex.org/W2788796308","https://openalex.org/W2794284562","https://openalex.org/W2795108508","https://openalex.org/W2810292802","https://openalex.org/W2902073357","https://openalex.org/W2927351257","https://openalex.org/W2944006115","https://openalex.org/W2944992402","https://openalex.org/W2947084868","https://openalex.org/W2948122216","https://openalex.org/W2954996726","https://openalex.org/W2962722475","https://openalex.org/W2963076818","https://openalex.org/W2964134613","https://openalex.org/W2971047694","https://openalex.org/W2972743300","https://openalex.org/W2973511309","https://openalex.org/W2991376513","https://openalex.org/W2999723590","https://openalex.org/W3016234935","https://openalex.org/W3035225512","https://openalex.org/W3035524453","https://openalex.org/W3104591054","https://openalex.org/W3105571753","https://openalex.org/W3108496296","https://openalex.org/W3110115443","https://openalex.org/W3113067059","https://openalex.org/W3114632476","https://openalex.org/W3119171349","https://openalex.org/W3130743176","https://openalex.org/W3142341292","https://openalex.org/W3156509901","https://openalex.org/W3161938705","https://openalex.org/W3174053790","https://openalex.org/W3183399135","https://openalex.org/W3187623946","https://openalex.org/W3190537575","https://openalex.org/W3195429019","https://openalex.org/W3203514840","https://openalex.org/W3216909972","https://openalex.org/W4200599209","https://openalex.org/W4205475721","https://openalex.org/W4214718285","https://openalex.org/W4226027695","https://openalex.org/W4285555510","https://openalex.org/W4296438114","https://openalex.org/W4296478337","https://openalex.org/W4297697565","https://openalex.org/W4304091718","https://openalex.org/W4310461873","https://openalex.org/W4312841534","https://openalex.org/W4313171465","https://openalex.org/W4313185874","https://openalex.org/W4313532593","https://openalex.org/W4316660592","https://openalex.org/W4319078702","https://openalex.org/W4319299671","https://openalex.org/W4319843999","https://openalex.org/W4320036619","https://openalex.org/W4320717287","https://openalex.org/W4321504196","https://openalex.org/W4323338522","https://openalex.org/W4323897056","https://openalex.org/W4324355347","https://openalex.org/W4327928267","https://openalex.org/W4360993903","https://openalex.org/W4361247902","https://openalex.org/W4362475243","https://openalex.org/W4367301504","https://openalex.org/W4379984420","https://openalex.org/W4382240124","https://openalex.org/W4382459184","https://openalex.org/W4383893503","https://openalex.org/W4385080019","https://openalex.org/W4385453100","https://openalex.org/W4385490607","https://openalex.org/W4385768200","https://openalex.org/W4385780451","https://openalex.org/W4385834325","https://openalex.org/W4386065445","https://openalex.org/W4386075765","https://openalex.org/W4386076095","https://openalex.org/W4386083088","https://openalex.org/W4386108371","https://openalex.org/W4386172468","https://openalex.org/W4386412320","https://openalex.org/W4386702846","https://openalex.org/W4387968040","https://openalex.org/W4387968449","https://openalex.org/W4387969459","https://openalex.org/W4388004144","https://openalex.org/W4388073267","https://openalex.org/W4388854793","https://openalex.org/W4389230936","https://openalex.org/W4389459415","https://openalex.org/W4390144226","https://openalex.org/W4390327397","https://openalex.org/W4390728109","https://openalex.org/W4390871852","https://openalex.org/W4390872019","https://openalex.org/W4390872367","https://openalex.org/W4391324012","https://openalex.org/W4391693788","https://openalex.org/W4391814420","https://openalex.org/W4392520197","https://openalex.org/W4392543857","https://openalex.org/W4392552076","https://openalex.org/W4392567235","https://openalex.org/W4392642293","https://openalex.org/W4392904192","https://openalex.org/W4392930951","https://openalex.org/W4392939934","https://openalex.org/W4393148248","https://openalex.org/W4393148253","https://openalex.org/W4393170627","https://openalex.org/W4393178539","https://openalex.org/W4394597989","https://openalex.org/W4394804889","https://openalex.org/W4394985544","https://openalex.org/W4394987741","https://openalex.org/W4396914541","https://openalex.org/W4397008655","https://openalex.org/W4399039553","https://openalex.org/W4401163409","https://openalex.org/W4402031051","https://openalex.org/W4402716188","https://openalex.org/W4402727383","https://openalex.org/W4402727724","https://openalex.org/W4403791161","https://openalex.org/W4403791723","https://openalex.org/W4404007839","https://openalex.org/W4404035381","https://openalex.org/W4404726142","https://openalex.org/W4406559860","https://openalex.org/W4406857689","https://openalex.org/W4407315509","https://openalex.org/W4413146594","https://openalex.org/W4417368162"],"related_works":[],"abstract_inverted_index":{"Human":[0],"action":[1,59,74,141,155,179],"recognition":[2,60,75,142,156,180],"(HAR),":[3],"which":[4],"aims":[5,160],"to":[6,97,161],"recognize":[7,100],"and":[8,12,35,47,62,99,110,150,171,175],"understand":[9,98],"individual":[10],"actions":[11],"intentions,":[13],"has":[14],"rapidly":[15],"become":[16],"a":[17,105,134,164,182],"research":[18],"hotspot":[19],"in":[20,122,181],"computer":[21,186],"vision.":[22],"Compared":[23],"with":[24,104],"other":[25],"data":[26,29,88],"modalities,":[27],"skeleton":[28,120,178],"offers":[30],"more":[31,36,168],"efficient":[32],"node":[33],"semantics":[34],"coherent":[37],"spatio-temporal":[38,124],"motion":[39,125],"patterns,":[40],"effectively":[41],"reducing":[42,83],"the":[43,71,95,113,117,138,173],"impact":[44],"of":[45,108,119,137,152,177,185],"lighting":[46],"background":[48],"changes.":[49],"In":[50],"recent":[51],"years,":[52],"many":[53],"researchers":[54,163],"have":[55,63],"focused":[56],"on":[57,85,129],"skeleton-based":[58,73,140],"methods":[61,76],"made":[64],"significant":[65],"progress.":[66],"However,":[67],"we":[68,132,145],"believe":[69],"that":[70],"current":[72],"still":[77],"face":[78],"three":[79],"major":[80],"challenges:":[81],"1)":[82],"reliance":[84],"expensive":[86],"labeled":[87],"while":[89],"maintaining":[90],"model":[91,96],"performance;":[92],"2)":[93],"enabling":[94],"new":[101],"behavior":[102],"classes":[103],"limited":[106],"number":[107],"samples;":[109],"3)":[111],"addressing":[112],"challenges":[114],"posed":[115],"by":[116],"lack":[118],"information":[121],"single-modality":[123],"representation":[126],"learning.":[127],"Based":[128],"these":[130],"challenges,":[131],"conduct":[133],"comprehensive":[135,165],"review":[136,149,159],"existing":[139],"methods.":[143],"Additionally,":[144],"provide":[146],"an":[147],"extensive":[148],"analysis":[151],"publicly":[153],"available":[154],"datasets.":[157],"This":[158],"offer":[162],"perspective,":[166],"stimulate":[167],"innovative":[169],"ideas,":[170],"promote":[172],"application":[174],"breakthrough":[176],"wider":[183],"range":[184],"vision":[187],"tasks.":[188]},"counts_by_year":[{"year":2026,"cited_by_count":7}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-12-08T00:00:00"}
