Interpretation of PostGIS geocode function ratings

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Edit: I am using Postgres 9.2 and recently installed PostGIS along with the Tiger Geocoder from the extras folder and downloaded all the latest Tiger data.

I have been testing the Tiger Geocoder function (http://postgis.net/docs/Extras.html) to process a big database of addresses in order to normalize/validate them and get lat-long coordinates.

I know that the function returns a rating between 0-100 (0 being the best), but I have not been able to find any documentation stating how to interpret the score.

How can I interpret the scores between 0 and 100?



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