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Automated ICD Coding Based on Word Embedding with Entry Embedding and Attention Mechanism
ZHANG Hongke, FU Zhenxin, REN Qianping, XU Hui, ZHAO Dongyan, YAN Rui
Acta Scientiarum Naturalium Universitatis Pekinensis    2020, 56 (1): 1-8.   DOI: 10.13209/j.0479-8023.2019.095
Abstract1468)   HTML    PDF(pc) (725KB)(188)       Save
The authors propose a neural model based on word embedding with entry embedding and attention mechanism, which can make full use of the unstructured text in the electronic medical record to achieve automated ICD coding for the main diagnosis of the medical record home page. This method first embeds the words which contain the medical record entries into word embeddings, and enriches word-level representation based on keyword attention. Then, the word attention is used to highlight the role of key words and enhance the text representation. Finally, ICD codes are output by a fully connected neural network classifier. Ablation study on a Chinese electronic medical record data set shows that word embedding with entry embedding, keyword attention and word attention is effective. The proposed model gets the best results for 81 diseases classification compared with baselines and can effectively improve the quality of automated ICD coding.
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A Hybrid Optimization Framework Fusing Word- and Sentence-Level Information for Extractive Summarization
LIN Xinyi, YAN Rui, ZHAO Dongyan
Acta Scientiarum Naturalium Universitatis Pekinensis    2018, 54 (2): 229-235.   DOI: 10.13209/j.0479-8023.2017.148
Abstract1060)   HTML4)    PDF(pc) (487KB)(363)       Save

In order to fuse word-level and sentence-level information from different semantic spaces, the authors propose a hybrid optimization framework to optimize word-level information while simultaneously incorporate sentence-level information as constraints. The optimization is conducted by iterative unit substitutions. The performance on DUC benchmark datasets demonstrates the effectiveness of proposed framework in terms of ROUGE evaluation.

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