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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] Address Parsing for Standardization and Geocoding |
| Date: |
03/24/2005 09:05:00 PM |
| From: |
Sonny Parafina |
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Hey Bill,
You might want to look at Schuyler Erle's geocoder.us
http://geocoder.us/
Source is available and its written in perl. Its pretty nifty but it
doesn't handle mis-spelling, you would probably need a soundex to handle
that.
sonny
-----Original Message-----
From: gislist-bounces@lists.thinkburst.com
[mailto:gislist-bounces@lists.thinkburst.com]On Behalf Of Bill Thoen
Sent: Thursday, March 24, 2005 9:23 PM
To: gislist@lists.thinkburst.com
Subject: [gislist] Address Parsing for Standardization and Geocoding
I'm looking for advice and algorithms for splitting US addresses into
street number, prefix direction, street name, street type, suffix
direction and unit. The problem I have is that the addresses I'm working
with have all these logical fields combined into one physical field and
the elements are not standardized. For example, the information in the
street field may vary a lot. There may or may not be direction information
or even street types. You can't be sure that the second word represents
the prefix direction, and it's really hard to tell which word is the last
one of the street name and whether the next word is the street type,
suffix direction or unit. Also some street names are spelled differently,
like "Woody Creek Rd" and "Woody Crk Rd."
Any suggestions on how to approach this problem? I'm currently working on
this in an Access database, and I can handle SQL and VBA programming
without too much difficulty. I'm just wondering how big a problem this is,
and how to break it down into smaller problems.
I did find some general articles on street elements via Google, and I know
where to get the USPS abbreviations for street types and directions, but I
haven't found any technical details on how to parse and standardize
addresses, so before I try to start from scratch, I thought I'd ask and
see what ideas and pointers that others might have.
- Bill Thoen
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