Fig. 3: AUROC fluctuation over time considering a 7-day sliding window.
From: Prediction of SARS-CoV-2-positivity from million-scale complete blood counts using machine learning
The red line represents the model trained only on the first wave of COVID-19 in Brazil data (up to 2020-06) while the green line represents a model trained with data immediately before the start of the second wave of COVID-19 in Brazil (up to 2020-10). Thinner lines depict the measured AUROC values while thicker lines illustrate their respective trends. The second wave model can retain performance during the second wave while the performance of the first-wave model deteriorates. Key events are marked in gray and purple. N = 357,956 CBCs.
