Figure 1
From: Use Internet search data to accurately track state level influenza epidemics
State-by-state heatmap of relative Mean Squared Error of ARGOX, VAR, GFT, and Lu et al.21 to the naive method. The relative MSE is the ratio of the MSE of a given method to that of the naive method. Blue color means smaller MSE (i.e., better performance) than the naive method; red color means larger MSE (i.e., worse performance ) than the naive method; grey color means result not available. ARGOX with all blue colors uniformly dominates the naive method, while mixed colors in the rest of the plots show that VAR, GFT, and Lu et al.21 were worse than the naive method in a large proportion of states. ARGOX and VAR are evaluated for the whole period of Oct 11, 2014 to March 21, 2020; GFT is evaluated for the period of Oct 11, 2014 to August 15, 2015 due to GFT data availability; Lu et al.21 is evaluated from Oct 11, 2014 to May 14, 2017 due to its availability.The figure was generated by the programming language R. The US maps were drawn based on the publicly available R package urbnmapr, which uses map shapefiles from the US Census Bureau (https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html).
