华南农业大学学报2026，Vol.47Issue(5)：779-789,11.DOI:10.7671/j.issn.1001-411X.202512007
融合多源数据的PRRSV时空风险预测框架研究
A spatiotemporal risk prediction framework for PRRSV based on multisource data integration
摘要
Abstract
[Objective]To propose and validate a spatiotemporal risk prediction framework for porcine reproductive and respiratory syndrome virus(PRRSV)by integrating epidemiological,environmental factors,and phylodynamic data,thereby addressing the limitations of existing transmission risk models in dynamically capturing transmission processes and quantifying risk gradients.[Method]A multidimensional feature system was constructed,and a continuous risk score was used to consistently quantify transmission risk at the"provincial level administrative region-month"scale.Comparative experiments were performed using a classical baseline model(Gradient boosting),traditional machine learning models(SVR,SVR-L,and XGBoost),and deep learning models(LSTM and Transformer).Model performance was further evaluated by provincial level administrative region-wise cross-validation and rolling time-window validation.[Result]All six models yielded lower mean absolute error(MAE)values when continuous risk score labels were used than when conventional binary labels were used.Phylodynamic/transmission features and historical features were the principal sources of information contributing to model performance;When used independently,they recovered 93.6%and 90.3%of the predictive performance of the full-feature baseline model,respectively.When engineered features were used and the training data proportion increased from 20%to 100%,the MAE of the Transformer model decreased from approximately 0.39 to 0.09,while that of the LSTM model decreased from approximately 0.14 to 0.07.In validation across administrative regions,XGBoost and Gradient boosting exhibited strong overall robustness,whereas the Transformer model showed regional adaptability in Henan,Shandong and other regions.[Conclusion]The proposed spatiotemporal risk prediction framework improves the accuracy of PRRSV transmission risk prediction and enhances the utilization efficiency of small-sample data,providing a methodological reference for the targeted prevention and control of PRRSV and other animal infectious diseases.关键词
PRRSV/时空风险预测/连续型风险评分/机器学习/深度学习/多源数据Key words
PRRSV/Spatiotemporal risk prediction/Continuous risk score/Machine learning/Deep learning/Multisource data分类
农业科技引用本文复制引用
张吉豫,孙彦阔..融合多源数据的PRRSV时空风险预测框架研究[J].华南农业大学学报,2026,47(5):779-789,11.基金项目
特定高校学科建设专项(2023B10564003) （2023B10564003）
"十四五"国家重点研发计划(2023YFD1301902) （2023YFD1301902）
