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A Novel Neural Network-Based Method for Medical Text Classification

School of Computer Engineering and Science, Shanghai University, Shanghai 200444, China
Authors to whom correspondence should be addressed.
Future Internet 2019, 11(12), 255;
Received: 21 October 2019 / Revised: 28 November 2019 / Accepted: 30 November 2019 / Published: 10 December 2019
(This article belongs to the Section Network Virtualization and Edge/Fog Computing)
Medical text categorization is a specific area of text categorization. Classification for medical texts is considered a special case of text classification. Medical text includes medical records and medical literature, both of which are important clinical information resources. However, medical text contains complex medical vocabularies, medical measures, which has problems with high-dimensionality and data sparsity, so text classification in the medical domain is more challenging than those in other general domains. In order to solve these problems, this paper proposes a unified neural network method. In the sentence representation, the convolutional layer extracts features from the sentence and a bidirectional gated recurrent unit (BIGRU) is used to access both the preceding and succeeding sentence features. An attention mechanism is employed to obtain the sentence representation with the important word weights. In the document representation, the method uses the BIGRU to encode the sentences, which is obtained in sentence representation and then decode it through the attention mechanism to get the document representation with important sentence weights. Finally, a category of medical text is obtained through a classifier. Experimental verifications are conducted on four medical text datasets, including two medical record datasets and two medical literature datasets. The results clearly show that our method is effective. View Full-Text
Keywords: text classification; neural network; medical text; data sparsity; high dimensionality text classification; neural network; medical text; data sparsity; high dimensionality
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Qing, L.; Linhong, W.; Xuehai, D. A Novel Neural Network-Based Method for Medical Text Classification. Future Internet 2019, 11, 255.

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