arXiv:2411.06436cs.LG2024-11被引 11

用地理人工智能分析非洲大规模疫病爆发,实现高精度周级预测。

Predictors of disease outbreaks at continentalscale in the African region: Insights and predictions with geospatial artificial intelligence using earth observations and routine disease surveillance data

  • 结合遥感与疾病数据,用机器学习预测四类传染病周级分布。
  • 疟疾预测F1得分达0.96,识别出关键环境与文化影响因素。
  • 适合公共卫生决策者、疫情预警系统开发者参考。

本研究针对非洲大陆约1788.5万平方公里区域,利用计算方法对疟疾、霍乱、脑膜炎和黄热病的周度病例数进行大范围分析,同时保持局部精细解析。通过全球与局部空间自相关分析,发现地理邻近性在不同地区影响程度各异,并识别出多个热点与冷点区域及空间异常值。采用机器学习模型预测二级行政区每周是否存在病例,对疟疾的预测达到最佳F1分数0.96。特征重要性分析揭示了影响传播的关键文化与环境因素,且不同疾病间存在差异。研究表明,数据分析与机器学习对于在广域范围内理解与监控局部疫情至关重要,其快速产出的洞察在疫情和紧急情况下尤为关键。

原文摘要 · Abstract (English)

Objectives: Our research adopts computational techniques to analyze disease outbreaks weekly over a large geographic area while maintaining local-level analysis by incorporating relevant high-spatial resolution cultural and environmental datasets. The abundance of data about disease outbreaks gives scientists an excellent opportunity to uncover patterns in disease spread and make future predictions. However, data over a sizeable geographic area quickly outpace human cognition. Our study area covers a significant portion of the African continent (about 17,885,000 km2). The data size makes computational analysis vital to assist human decision-makers. Methods: We first applied global and local spatial autocorrelation for malaria, cholera, meningitis, and yellow fever case counts. We then used machine learning to predict the weekly presence of these diseases in the second-level administrative district. Lastly, we used machine learning feature importance methods on the variables that affect spread. Results: Our spatial autocorrelation results show that geographic nearness is critical but varies in effect and space. Moreover, we identified many interesting hot and cold spots and spatial outliers. The machine learning model infers a binary class of cases or none with the best F1 score of 0.96 for malaria. Machine learning feature importance uncovered critical cultural and environmental factors affecting outbreaks and variations between diseases. Conclusions: Our study shows that data analytics and machine learning are vital to understanding and monitoring disease outbreaks locally across vast areas. The speed at which these methods produce insights can be critical during epidemics and emergencies.

疫病预测地理人工智能机器学习

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