An Algorithm of Query Expansion for Chinese EMR Retrieval by Improving Expansion Term Weights and Retrieval Scores

• Published in: IEEE access Vol. 8; pp. 200063 - 200072
• Main Authors: Yang, Songchun, Zheng, Xiangwen, Yin, Xiangfei, Mao, Huajian, Zhao, Dongsheng
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; BM25; co-occurrence; Drift; Electronic health records; Electronic medical record; Electronic medical records; Medical research; Performance enhancement; Queries; Query expansion; Retrieval; Semantics; Solids; word2Vec

Query expansion (QE) has been widely used in electronic medical record (EMR) retrieval for assisted diagnosis and clinical research. However, existing QE algorithms haven't achieved satisfactory performance in Chinese EMR retrieval, and one noticeable problem is that the weights of expansion te...