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Extracting relevant features from these medical records and constructing a knowledge graph can significantly contribute to an efficient data analysis and decision support system for breast cancer diagnosis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>An approach was proposed to develop a workflow for effectively extracting breast cancer-related features from Chinese breast cancer mammography reports and constructing a knowledge graph for breast cancer diagnosis. Firstly, the concept layer of the knowledge graph for breast cancer diagnosis was constructed based on breast cancer diagnosis and treatment guidelines, along with insights from clinical experts. .Next, a BiLSTM-Highway-CRF model was designed to extract the mammography features, which formed the data layer of the knowledge graph. Finally, the knowledge graph was constructed by combining the concept layer and the data layer in a Neo4j graph data platform, and then applied in visualization analysis, semantic query and computer assisted diagnosis.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Mammographic features were extracted from a total of 1171 mammography examination reports. The overall extraction performance of the model achieved an accuracy rate of 97.16%, a recall rate of 98.06%, and a F1 score of 97.61%. Additionally, 47,660 relationships between entities were identified based on the four different types of relationships defined in the concept layer. The knowledge graph for breast cancer diagnosis was constructed after inputting mammographic features and relationships into the Neo4j graph data platform. The model was assessed from the concept layer, data layer, and application layer perspectives, and showed promising results.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>The proposed workflow is applicable for constructing knowledge graphs for breast cancer diagnosis based on Chinese EMRs. This study serves as a reference for the rapid design, construction, and application of knowledge graphs for diagnosis and treatment of other diseases. Furthermore, it offers a potential solution to address the issues of limited data sharing and format inconsistencies present in Chinese EMR data.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12911-023-02322-0","type":"journal-article","created":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T11:03:11Z","timestamp":1696935791000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Construction of a knowledge graph for breast cancer diagnosis based on Chinese electronic medical records: development and usability study"],"prefix":"10.1186","volume":"23","author":[{"given":"Xiaolong","family":"Li","sequence":"first","affiliation":[]},{"given":"Shuifa","family":"Sun","sequence":"additional","affiliation":[]},{"given":"Tinglong","family":"Tang","sequence":"additional","affiliation":[]},{"given":"Ji","family":"Lu","sequence":"additional","affiliation":[]},{"given":"Lijuan","family":"Zhang","sequence":"additional","affiliation":[]},{"given":"Jie","family":"Yin","sequence":"additional","affiliation":[]},{"given":"Qian","family":"Geng","sequence":"additional","affiliation":[]},{"given":"Yirong","family":"Wu","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2023,10,10]]},"reference":[{"key":"2322_CR1","doi-asserted-by":"publisher","first-page":"103137","DOI":"10.1016\/j.jbi.2019.103137","volume":"92","author":"I Banerjee","year":"2019","unstructured":"Banerjee I, Bozkurt S, Alkim E, et al. 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