Macro view of the Four

How to spot the difference between algorithms by using scatterplots

Figure 1 Nassau County, three algorithms combined

The last post here on the ZarkFiles ended with four diagrams that showed how the four algorithms found in New York’s voter rolls are constructed. This morning, I decided to add images that show the final result.

The first image (figure 1) shows all of Nassau County’s voter ID numbers in one scatterplot. N…