Understanding the temporal evolution of COVID-19 research through machine learning and natural language processing.

A slightly increasing trend is also observed for the deep learning–medical imaging topic.

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As observed, three topics, i.e., intubation-oxygenation, analytics, and rehabilitation-panic, followed a decreasing trend over time while the others’ prevalence increased.

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As seen, only two topics, i.e., surgical care and social services and emergency, have followed an increasing trend over time while the other topics’ prevalence has declined.

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