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 Position: Home > issue > The 2nd Issue  
Modeling COVID-19 outbreak in China through multi-source information fusion
Category: Commentary
Author: Lin Wu

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Simulation and reporting of covid-19


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The first challenge when modeling a novel epidemic is that all the reported and inferred data about its dynamics are inevitably affected by some level of uncertainty, resulting in wide ranges and systematic bias. The number of infected cases on any given date is a hidden state in the stochastic process and cannot be observed directly because it is never clear how much time elapses between when infection occurs and when that infection is identified and reported. This gap includes the incubation period and any delay in medical visit, diagnosis, or reporting. To make matters worse, modeling may be influenced by authors' prejudice, interest relationships, or preconceived ideas. Therefore, we argue that scientific research should combine multiple sources of data worldwide rather than be based on a single source, and should treat estimates from global researchers as elastic constraints imposed on models.





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