Downscaling epidemiological time series data for improving forecasting accuracy: An algorithmic approach

被引:3
|
作者
Al Mobin, Mahadee [1 ,2 ]
Kamrujjaman, Md. [1 ]
机构
[1] Univ Dhaka, Dept Math, Dhaka, Bangladesh
[2] Bangladesh Inst Governance & Management, Dhaka, Bangladesh
来源
PLOS ONE | 2023年 / 18卷 / 12期
关键词
CLIMATE-CHANGE; DAILY PRECIPITATION; DENGUE; MODEL; IDENTIFICATION; PERFORMANCE; WEATHER; IMPACT;
D O I
10.1371/journal.pone.0295803
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Data scarcity and discontinuity are common occurrences in the healthcare and epidemiological dataset and often is needed to form an educative decision and forecast the upcoming scenario. Often to avoid these problems, these data are processed as monthly/yearly aggregate where the prevalent forecasting tools like Autoregressive Integrated Moving Average (ARIMA), Seasonal Autoregressive Integrated Moving Average (SARIMA), and TBATS often fail to provide satisfactory results. Artificial data synthesis methods have been proven to be a powerful tool for tackling these challenges. The paper aims to propose a novel algorithm named Stochastic Bayesian Downscaling (SBD) algorithm based on the Bayesian approach that can regenerate downscaled time series of varying time lengths from aggregated data, preserving most of the statistical characteristics and the aggregated sum of the original data. The paper presents two epidemiological time series case studies of Bangladesh (Dengue, Covid-19) to showcase the workflow of the algorithm. The case studies illustrate that the synthesized data agrees with the original data regarding its statistical properties, trend, seasonality, and residuals. In the case of forecasting performance, using the last 12 years data of Dengue infection data in Bangladesh, we were able to decrease error terms up to 72.76% using synthetic data over actual aggregated data.
引用
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页数:33
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