Hi Amy - when I think of an address (in this case sticking with your thread on a physical address) I am focused first on the data elements that are mandatory for
completeness &
correctness of the address. Address formats and data elements for completeness & correctness vary tremendously across the globe and so its very important to have a good grasp of required/optional data elements for that country (or region). A good overview of that complexity is here:
http://www.columbia.edu/~fdc/postal/. For an address to be usable and have acceptable quality the address needs to meet or exceed the mandatory data elements and ideally have optional data elements as well. An incomplete address can greatly degrade performance in a geocoder or make the postal use case to fail altogether. Automated completeness and correctness tests can be designed for each country and can ensure a first level or quality of the address data.
Separate from that is the issue of the
currency (up-to-dateness) of the address data itself. Due to real-world changes such as E-911, annexations or even countrywide addressing changes such as Eircodes in Ireland, the address data that was current yesterday could be outdated today. While it looks complete/correct from the formatting perspective, its no longer current. Depending on the use-case that address data is now unusable. Having good systems to maintain the currency of the address data is critical as currency issues can be stealthy and not obvious to the end user.
Lastly, the
coverage of the address data is another aspect to consider. Entire countries or regions within a country could be missing and also impact the overall search results for the user. Since the real world universe of addresses in a country is huge, a proxy for reality (a spatially-representative statistically-significant sample set) can be used to confirm coverage is up to expectations.
Thanks
Tom
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Tom Gilligan
Knowledge Community Shared Account
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Original Message:
Sent: 04-25-2019 16:23
From: Amy Metz
Subject: What is an Address?
What does the term "Address Data" mean to you? When I find myself talking about Address Data to various people, it's clear that an address doesn't always mean the same thing depending on one's use case. However, it almost always boils down to two main asks: 1. Where is this address? and 2. Can I mail to it? I've been building address data for a long time, but whenever I think of these two functions, my brain immediately associates them with physical and static address locations. The concept of an address has changed greatly in the last decade to not only include physical street locations but also consumer digital addresses, like emails and social handles.
Sticking with a physical address...we can answer the questions of where is this address and can I mail to it by carrying out two distinct functions. If I want to find the latitude and longitude of an address, I can use geocoding software, and if I want to know if the local post will deliver a mail piece or package, we often use postal address validation tools. Check out the examples below. Simple, right? In both cases, these tools rely on an input address from a customer database. But do you ever think about the underlying reference dataset used to geocode or validate an address and how this data is collected and updated? What do you consider as an address and what attributes do you look for in Address Data?
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Amy Metz, PMP, PMC-III
Product Manager - Address Data
Pitney Bowes
White River Junction, VT
802-698-3571
https://www.linkedin.com/feed/?trk=
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