RESEARCH PAPERS

Fine-Grained Credibility Assessment of Social Media Health Information with Semantic Enhancement

  • Liu Chengshan ,
  • Tang Xuan ,
  • Qin Chunxiu
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  • School of Economics and Management, Xidian University, Xi'an 710126
Liu Chengshan, Associate Researcher, Master's Supervisor; Tang Xuan, Master's Candidate, Corresponding Author, Email:23061212962@stu.xidian.deu.cn; Qin Chunxiu, Professor, PhD, Master's Supervisor.

Received date: 2025-05-22

  Revised date: 2025-09-02

  Online published: 2026-07-30

Abstract

[Purpose/Significance] This study aims to address the challenges of weak model generalization, semantic sparsity in short texts, and coarse classification granularity, which are caused by scarce annotated health information data on social media. It explores methods to enhance semantic features of health information, refine credibility classification, and improve the interpretability and accuracy of health information credibility assessment. [Method/Process] First, a BERT-CNN-BiLSTM semantic enhancement architecture was constructed. Dependency parsing was employed to extract candidate relation tuples, which were then fused with an external medical knowledge base to generate standardized relation tuples. Second, a credibility assessment metric system was established by integrating dimensions such as comment semantics and sentiment features. Finally, health information was categorized into five levels based on its credibility degree, enabling fine-grained assessment. [Result/Conclusion] Comparison with expert-annotated datasets and baseline models demonstrates that the proposed model achieves 90.8% accuracy and 89.0% F1 score on the five-class classification task. These results confirm that the proposed fusion semantic enhancement-based fine-grained credibility assessment model effectively improves the health information assessment on social media.

Cite this article

Liu Chengshan , Tang Xuan , Qin Chunxiu . Fine-Grained Credibility Assessment of Social Media Health Information with Semantic Enhancement[J]. Library and Information Service, 2026 , 70(15) : 49 -59 . DOI: 10.13266/j.issn.0252-3116.2026.15.004

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