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SIR corner cases for doubling time estimation #27
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Our estimate of doubling time does not account for corner cases when the number of confirmed cases is constant or repeated (this leads to infinite or nan estimates). To account for this we experimented with various imputation techniques. The best performing option is to impute the mean for nan doubling times and set the doubling time to large maximum value when the mean is nan or infinite (7 day MAE of ~40 for US across all regions).