{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T18:34:57Z","timestamp":1772908497076,"version":"3.50.1"},"reference-count":30,"publisher":"World Scientific Pub Co Pte Ltd","issue":"11n12","funder":[{"name":"Foreign cooperation projects of Fujian Province in 2021","award":["2021I0001"],"award-info":[{"award-number":["2021I0001"]}]},{"name":"Open Fund of State Key Laboratory of Automatic Control Technology for Mining and Smelting Process","award":["BGRIMM-KZSKL-2022-14"],"award-info":[{"award-number":["BGRIMM-KZSKL-2022-14"]}]},{"DOI":"10.13039\/501100015930","name":"State Key Laboratory of Disaster Prevention and Reduction for Power Grid Transmission and Distribution Equipment","doi-asserted-by":"publisher","award":["020YFC1522604"],"award-info":[{"award-number":["020YFC1522604"]}],"id":[{"id":"10.13039\/501100015930","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Horizontal Project (Co-construction platform), Joint Laboratory of Public Security and Artificial Intelligence","award":["20233160C0003"],"award-info":[{"award-number":["20233160C0003"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Soft. Eng. Knowl. Eng."],"published-print":{"date-parts":[[2023,12]]},"abstract":"<jats:p> Wireless sensing techniques for Human Activity Recognition (HAR) have been widely studied in recent years. At present, research on HAR based on Radio Frequency Identification (RFID) is changing from the tag attachment method to the tag non-attachment method. Affected by multipath, the current solutions in tag non-attachment scenarios mainly focus on single-object activity recognition, which is not suitable for multi-object scenarios. To address these issues, we propose STMultiple, a novel tag non-attachment activity recognition model for multi-object. The model first preprocesses the raw signal with filter and phase calibration, then it applies dilated convolution in the frequency domain to extract multi-object activity features, finally the feature pyramid structure and ProbSparse are used to optimize the vanilla Transformer-Encoder to enhance the activity recognition ability. Extensive experiments show that STMultiple can achieve recognition accuracy of up to 97.93% and down to about 90% in challenging environments ranging from two to five users, which has excellent performance compared to several state-of-the-art methods. <\/jats:p>","DOI":"10.1142\/s0218194023410073","type":"journal-article","created":{"date-parts":[[2023,10,29]],"date-time":"2023-10-29T05:17:15Z","timestamp":1698556635000},"page":"1813-1833","source":"Crossref","is-referenced-by-count":3,"title":["STMultiple: Sparse Transformer Based on RFID for Multi-Object Activity Recognition"],"prefix":"10.1142","volume":"33","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-2232-7145","authenticated-orcid":false,"given":"Shunwen","family":"Shen","sequence":"first","affiliation":[{"name":"School of Informatics, Xiamen University, Siming District, Xiamen, Fujian 361005, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mulan","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Economics and Finance, Xi\u2019an Jiaotong University, Beilin, Shaanxi, Xian, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuehan","family":"Hou","sequence":"additional","affiliation":[{"name":"School of Software, Xi\u2019an Jiaotong University, Beilin, Shaanxi, Xian, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5338-0471","authenticated-orcid":false,"given":"Lvqing","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Informatics, Xiamen University, Siming District, Xiamen, Fujian 361005, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sien","family":"Chen","sequence":"additional","affiliation":[{"name":"School of Navigation, Jimei University, Fujian, Jimei District, Xiamen, P.\u00a0R.\u00a0China"},{"name":"School of Management, Xiamen University, Siming District, Xiamen, Fujian 361005, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wensheng","family":"Dong","sequence":"additional","affiliation":[{"name":"Zijin Zhixin (Xiamen) Technology Co., Ltd., Xiamen, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bo","family":"Yu","sequence":"additional","affiliation":[{"name":"Zijin Zhixin (Xiamen) Technology Co., Ltd., Xiamen, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qingkai","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Process Automation in Mining &, Metallurgy, Beijing, P.\u00a0R.\u00a0China"},{"name":"Beijing Key Laboratory of Process Automation in Mining &, Metallurgy, Beijing, P.\u00a0R.\u00a0China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2023,12,23]]},"reference":[{"key":"S0218194023410073BIB001","doi-asserted-by":"publisher","DOI":"10.1109\/INFOCOM.2017.8057159"},{"key":"S0218194023410073BIB002","first-page":"458","volume-title":"2019 IEEE Int. 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