ILI predictions for 31 geolocations estimated using Pearson correlation for nowcasting (this week) and forecasting (one and two weeks).

Neural network models are trained from ILI data only (ILI), social media data only (SM), or both ILI and SM data (ILI + SM). Locations are sorted by the amount of Twitter data available in a descending order (the first column is shown in millions). Locations with min and max correlations are underlined.