A semi-supervised classification RBM with an improved fMRI representation algorithm
Computer Methods and Programs in Biomedicine(2022)
摘要
•An unsupervised feature learning algorithm named HRBM is used for RBM to make the fMRI feature representation learned sparse.•A semi-supervised classification RBM for fMRI with a joint tuning algorithm based on the improved HRBM, namely semi-HRBM is proposed.•Compared with the supervised models, the performance of Semi-HRBM was significantly improved.•Our HRBM has satisfactory feature representation capabilities and better performance for multiple classification tasks.•Our Semi-HRBM classification model improves the average accuracy of the four-classification task by 7.68%, and improves the average F1 score of each visual stimulus task by 8.90%.
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关键词
Deep learning, Feature representation,Functional magnetic resonance imaging (fMRI),Restricted boltzmann machine (RBM),Semi-supervised classification
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