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• W4387472561 abstract "Understanding the spatio-temporal patterns of the coronavirus disease 2019 (COVID-19) is essential to construct public health interventions. Spatially referenced data can provide richer opportunities to understand the mechanism of the disease spread compared to the more often encountered aggregated count data. We propose a spatio-temporal Dirichlet process mixture model to analyze confirmed cases of COVID-19 in an urban environment. Our method can detect unobserved cluster centers of the epidemics, and estimate the space-time range of the clusters that are useful to construct a warning system. Furthermore, our model can measure the impact of different types of landmarks in the city, which provides an intuitive explanation of disease spreading sources from different time points. To efficiently capture the temporal dynamics of the disease patterns, we employ a sequential approach that uses the posterior distribution of the parameters for the previous time step as the prior information for the current time step. This approach enables us to incorporate time dependence into our model in a computationally efficient manner without complicating the model structure. We also develop a model assessment by comparing the data with theoretical densities, and outline the goodness-of-fit of our fitted model." @default.
• W4387472561 created "2023-10-11" @default.
• W4387472561 creator A5037165762 @default.
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• W4387472561 date "2023-10-09" @default.
• W4387472561 modified "2023-10-17" @default.
• W4387472561 title "A spatio‐temporal Dirichlet process mixture model for coronavirus disease‐19" @default.
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• W4387472561 doi "https://doi.org/10.1002/sim.9925" @default.
• W4387472561 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37812818" @default.
• W4387472561 hasPublicationYear "2023" @default.
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