VAE-CapsNet: A common emotion information extractor for cross-subject emotion recognition

Owing to the uniqueness of brain structure, function, and emotional experiences, neural activity patterns differ among subjects. As a result, affective brain–computer interfaces (aBCIs) must account for individual differences in neural activity, electroencephalogram data, and particularly emotion pa...

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Veröffentlicht in:Knowledge-based systems Jg. 311; S. 113018
Hauptverfasser: Chen, Huayu, Li, Junxiang, He, Huanhuan, Sun, Shuting, Zhu, Jing, Li, Xiaowei, Hu, Bin
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier B.V 28.02.2025
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ISSN:0950-7051
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Abstract Owing to the uniqueness of brain structure, function, and emotional experiences, neural activity patterns differ among subjects. As a result, affective brain–computer interfaces (aBCIs) must account for individual differences in neural activity, electroencephalogram data, and particularly emotion pattern (EP). These differences in emotion information types and distribution patterns, such as session EP differences (SEPD) and individual EP differences (IEPD), pose notable challenges for cross-subject and cross-session emotion classification. To address these challenges, we propose a novel common emotion information extraction framework VAE-CapsNet that combines a variational autoencoder (VAE) and capsule network (CapsNet). A VAE-based unsupervised EP transformation module is used to mitigate SEPD, while five segmental activation functions are introduced to match EPs across different subjects. The CapsNet-based information extractor efficiently handles various emotion information, producing universal emotional features from different sessions. We validated the performance of the VAE-CapsNet framework through cross-session, cross-subject, and cross-dataset experiments on the SEED, SEED-IV, SEED-V, and FACED datasets. •Nine types of emotion information are refined within the positive–negative–neutral scene.•A VAE-based EP transformation framework is proposed to address the SEPD problem.•Information adjustment functions are designed to process and align different emotion information.•A CapsNet-based common emotion information extractor is introduced to tackle the IEPD problem.
AbstractList Owing to the uniqueness of brain structure, function, and emotional experiences, neural activity patterns differ among subjects. As a result, affective brain–computer interfaces (aBCIs) must account for individual differences in neural activity, electroencephalogram data, and particularly emotion pattern (EP). These differences in emotion information types and distribution patterns, such as session EP differences (SEPD) and individual EP differences (IEPD), pose notable challenges for cross-subject and cross-session emotion classification. To address these challenges, we propose a novel common emotion information extraction framework VAE-CapsNet that combines a variational autoencoder (VAE) and capsule network (CapsNet). A VAE-based unsupervised EP transformation module is used to mitigate SEPD, while five segmental activation functions are introduced to match EPs across different subjects. The CapsNet-based information extractor efficiently handles various emotion information, producing universal emotional features from different sessions. We validated the performance of the VAE-CapsNet framework through cross-session, cross-subject, and cross-dataset experiments on the SEED, SEED-IV, SEED-V, and FACED datasets. •Nine types of emotion information are refined within the positive–negative–neutral scene.•A VAE-based EP transformation framework is proposed to address the SEPD problem.•Information adjustment functions are designed to process and align different emotion information.•A CapsNet-based common emotion information extractor is introduced to tackle the IEPD problem.
ArticleNumber 113018
Author Chen, Huayu
Li, Xiaowei
He, Huanhuan
Hu, Bin
Sun, Shuting
Li, Junxiang
Zhu, Jing
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Keywords Affective computing
Emotion recognition
Cross-subject
Cross-session
Brain-computer interface(BCI)
Subject-dependent
Cross-dataset
Electroencephalogram(EEG)
Language English
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Snippet Owing to the uniqueness of brain structure, function, and emotional experiences, neural activity patterns differ among subjects. As a result, affective...
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StartPage 113018
SubjectTerms Affective computing
Brain-computer interface(BCI)
Cross-dataset
Cross-session
Cross-subject
Electroencephalogram(EEG)
Emotion recognition
Subject-dependent
Title VAE-CapsNet: A common emotion information extractor for cross-subject emotion recognition
URI https://dx.doi.org/10.1016/j.knosys.2025.113018
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