Quality of Geocoding

Improving the Geocoding of foreign Addresses

FACT is:   A geomarketing program - is only as good as - it can geocode addresses.

                The optimal program routines for geocoding are strongly dependent on the country,
                and  . . . it follows that geocoding can only be carried out with the support of native speakers.

• • • • • • Only a German  - knows the different spelling of German addresses.
          • Only a Frenchman - knows the different spellings of French addresses.
            
            The same applies to British, Spanish and Italian addresses, to name a few.
            

TESTING:  How do we test the quality of a geocoding?

1. 1. 1. 1. For comparison, we use reference lists with - 100% correctly(*) - geocoded addresses.
            This is typically a mix of company addresses, addresses of authorities and institutions.
            (*) validated in - Sattellite - mode.
            
            
         2. We compare the geocodes by Air distances.
            Tested Program (e.g. Maptitude) :  "Program Longitude" / "Program Latitude"
            Compared Program: " - 100% - Longitude" / " -100% - Latitude"
            
            

IMPROVE:   The spelling of German addresses - is highly complex -.
                    E.g. You need cross tables with all possible address variations. ~ 500 + ! 

                    Our company helps other companies in the development of optimal geocoding routines
                    for the GERMAN market.