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Indexed by:期刊论文

Date of Publication:2021-01-10

Journal:BMC BIOINFORMATICS

Volume:21

Issue:,SI

ISSN No.:1471-2105

Key Words:Biomedical document triage; Capsule network; Hierarchical attention mechanism; Biomedical literature

Abstract:BackgroundBiomedical document triage is the foundation of biomedical information extraction, which is important to precision medicine. Recently, some neural networks-based methods have been proposed to classify biomedical documents automatically. In the biomedical domain, documents are often very long and often contain very complicated sentences. However, the current methods still find it difficult to capture important features across sentences.ResultsIn this paper, we propose a hierarchical attention-based capsule model for biomedical document triage. The proposed model effectively employs hierarchical attention mechanism and capsule networks to capture valuable features across sentences and construct a final latent feature representation for a document. We evaluated our model on three public corpora.ConclusionsExperimental results showed that both hierarchical attention mechanism and capsule networks are helpful in biomedical document triage task. Our method proved itself highly competitive or superior compared with other state-of-the-art methods.