{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,7]],"date-time":"2026-05-07T14:59:30Z","timestamp":1778165970839,"version":"3.51.4"},"reference-count":36,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T00:00:00Z","timestamp":1627603200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Shenzhen Governmental Basic Research Grant ,Key Project Natural Science Foundation of Guangdong Province","award":["JCYJ20180507182241622, JCYJ20180503182125190,2020B1515120004"],"award-info":[{"award-number":["JCYJ20180507182241622, JCYJ20180503182125190,2020B1515120004"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>It is well known that there may be significant individual differences in physiological signal patterns for emotional responses. Emotion recognition based on electroencephalogram (EEG) signals is still a challenging task in the context of developing an individual-independent recognition method. In our paper, from the perspective of spatial topology and temporal information of brain emotional patterns in an EEG, we exploit complex networks to characterize EEG signals to effectively extract EEG information for emotion recognition. First, we exploit visibility graphs to construct complex networks from EEG signals. Then, two kinds of network entropy measures (nodal degree entropy and clustering coefficient entropy) are calculated. By applying the AUC method, the effective features are input into the SVM classifier to perform emotion recognition across subjects. The experiment results showed that, for the EEG signals of 62 channels, the features of 18 channels selected by AUC were significant (p &lt; 0.005). For the classification of positive and negative emotions, the average recognition rate was 87.26%; for the classification of positive, negative, and neutral emotions, the average recognition rate was 68.44%. Our method improves mean accuracy by an average of 2.28% compared with other existing methods. Our results fully demonstrate that a more accurate recognition of emotional EEG signals can be achieved relative to the available relevant studies, indicating that our method can provide more generalizability in practical use.<\/jats:p>","DOI":"10.3390\/e23080984","type":"journal-article","created":{"date-parts":[[2021,7,30]],"date-time":"2021-07-30T12:59:24Z","timestamp":1627649964000},"page":"984","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["EEG-Based Emotion Recognition by Exploiting Fused Network Entropy Measures of Complex Networks across Subjects"],"prefix":"10.3390","volume":"23","author":[{"given":"Longxin","family":"Yao","sequence":"first","affiliation":[{"name":"School of Electronic and Information Engineering, Harbin Institute of Technology at Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingjiang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Electronic and Information Engineering, Harbin Institute of Technology at Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0387-7062","authenticated-orcid":false,"given":"Yun","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Computer Science and Engineering, Huizhou University, Huizhou 516007, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heng","family":"Li","sequence":"additional","affiliation":[{"name":"School of Electronic and Information Engineering, Harbin Institute of Technology at Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xue","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electronic and Information Engineering, Harbin Institute of Technology at Shenzhen, Shenzhen 518055, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,30]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Improved Deep Feature Learning by Synchronization Measurements for Multi-Channel EEG Emotion Recognition","volume":"2020","author":"Chao","year":"2020","journal-title":"Complexity"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"101191","DOI":"10.1016\/j.aei.2020.101191","article-title":"EEG-based approach for recognizing human social emotion perception","volume":"46","author":"Zhu","year":"2020","journal-title":"Adv. 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