Chen Deng ¹ ChengJie Lu ^2* HongPeng Bai ^3* Kaijian Xia ^4* Meilian Zheng ^5*

• ¹ Zhejiang Sci-Tech University, Hangzhou, China
• ² Zhejiang Yuexiu University of Foreign Languages, Shaoxing, Zhejiang, China
• ³ College of Intelligence and Computing, Tianjin University, Tianjin, China
• ⁴ Department of Neurology, Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
• ⁵ School of Management, Zhejiang University of Finance and Economics, Hangzhou, Jiangsu Province, China

In clinical nutrition research, the medical industry chain generates a wealth of multidimensional spatial data across various formats, including text, images, and semi-structured tables. This data's inherent heterogeneity and diversity present significant challenges for processing and mining, which are further compounded by the data's diverse features, which are difficult to extract. To address these challenges, we propose an innovative integration of artificial intelligence (AI) with the medical industry chain data, focusing on constructing semantic knowledge graphs and extracting core features. These knowledge graphs are pivotal for efficiently acquiring insights from the vast and granular big data within the medical industry chain. Our study introduces the Clinical Feature Extraction Knowledge Mapping ($CFEKM$) model, designed to augment the attributes of medical industry chain knowledge graphs through an entity extraction method grounded in syntactic dependency rules. The $CFEKM$ model is applied to real and large-scale datasets within the medical industry chain, demonstrating robust performance in relation extraction, data complementation, and feature extraction. It achieves superior results to several competitive baseline methods, highlighting its effectiveness in handling medical industry chain data complexities. By representing compact semantic knowledge in a structured knowledge graph, our model identifies knowledge gaps and enhances the decision-making process in clinical nutrition research.