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Semi-Supervised EEG Clustering With Multiple Constraints
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DOI：10.1109/TKDE.2022.3206330.png)
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Electroencephalogram (EEG)-based applications in Brain-Computer Interfaces (BCIs, or Human-Machine Interfaces, HMIs), diagnosis of neurological disease, rehabilitation, etc, rely on supervised techniques such as EEG classification that requires given class labels or markers. Incomplete or incorrectly labeled or unlabeled EEG data are increasing with the ever-expanding amount of EEG data generated by such applications and the ambiguities these generate degrade the performance of supervised techniques. To address the challenging task of clustering EEG data with limited priori knowledge, we introduce a semi-supervised graph embedding EEG clustering approach termed ConsEEGc with multiple constraints, i.e., label-transformed connectivity constraints that constrains the connection or disconnection among EEG data, compactness-and-scatter constraint that constrains the intra-cluster compactness and inter-cluster scatter of EEG clusters, and fairness constraint that constrains the fair ratio of elements between EEG clusters, to make best use of limited priori knowledge of EEG data and to achieve better EEG clustering results. ConsEEGc is conducted with an optimization objective function that integrates pseudo label learning, least-square error minimization and multiple constraints, and it can quickly converge to local optima. The experiments demonstrate that ConsEEGc can efficiently yield good clustering results on various types of real-world EEG datasets, compared to state-of-the-art standard unsupervised and semi-supervised EEG/time series clustering algorithms.
Keyword:
Semi-supervised EEG clustering
connectivity constraints
compactness-and-scatter constraint
fairness constraint
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10.4
论文数:
6.9K
被引数:
3.2W
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