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Research on hierarchical early warning of drug shortages based on probability prediction and interval estimation

Published on Jul. 08, 2026Total Views: 56 times Total Downloads: 17 times Download Mobile

Author: FENG Yuhan 1 JIANG Tingyuan 1 JING Fuhao 1 TANG Pengzhan 1 PANG Zhonghua 1

Affiliation: 1.School of Information Engineering, Zhongyuan Institute of Science and Technology, Xuchang 461000, Henan Province, China

Keywords: Drug shortage Demand forecasting Hybrid model Variational mode decomposition Newton-Raphson-based optimizer Least squares support vector machine DeepAR Long short-term memory network Tiered early warning

DOI: 10.12173/j.issn.2097-4922.202603002

Reference: FENG Yuhan, JIANG Tingyuan, JING Fuhao, TANG Pengzhan, PANG Zhonghua.Research on hierarchical early warning of drug shortages based on probability prediction and interval estimation[J]. Yaoxue QianYan Zazhi, 2026, 30(5): 1001 - 1009.DOI: 10.12173/j.issn.2097-4922.202603002[Article in Chinese]

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Abstract

Objective To establish a hybrid forecasting framework for 7- to 30-day drug demand/shortage prediction and tiered early warning during public health emergencies.

Methods Variational mode decomposition (VMD) was used to extract multi-scale features, the Newton-Raphson-based optimizer (NRBO) was used to optimize the key parameters of the least squares support vector machine (LSSVM), and the DeepAR-long short-term memory (LSTM) hybrid model was used to capture nonlinear patterns and uncertainty. Rolling backtesting was conducted with ARIMA and other models as baselines. Tiered warnings were triggered when predicted demand exceeded inventory plus safety stock.

Results The hybrid model achieved lower errors than single-step methods, with greater stability during shock periods. Prediction intervals characterized uncertainty and supported early warning and the generation of procurement/reallocation recommendations.

Conclusion The decomposition-optimization-integration framework improves forecasting accuracy and robustness, offering a deployable prediction-to-early-warning pathway for drug supply assurance at the grassroots and regional levels.

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References

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