[Talk-ko] questions about Korean address data

[Tom Lee]

I had recently been researching Korean address data for possible inclusion
in openaddresses.io.

I understand that the country is undergoing a transition in its address
system, and have been pleased to find some open address data
<http://data.seoul.go.kr/openinf/sheetview.jsp?infId=OA-1088>. I have
contributed
data from data.seoul.go.kr that covers Seoul
<https://github.com/openaddresses/openaddresses/pull/698>. However, finding
data for the rest of the country has proven difficult.

juso.go.kr provides downloads of address data -- here is an example
<https://gist.github.com/sbma44/34ce7e192d08ce7adfba>. But it does not
contain location information. The site's search functionality
<http://www.juso.go.kr/support/AddressMainSearch2.do> makes it clear that
this data can be joined to geographic data, but it is not clear where this
data comes from or whether it is available for public use. In many
countries this data is kept in the state cadastral/parcel database (perhaps
LURIS <http://luris.molit.go.kr/>, in Korea's case?), but I am unable to
confirm that this is the case in Korea.

I have two questions:

1. Is South Korean cadastral data available for download, such that it can
be joined to the address data available from juso.go.kr?

2. In the open Seoul address data, there are columns for "old" and "new"
addresses. Here is a sample of one file
<https://gist.github.com/sbma44/51023dff53c4583f8184>. At first I thought
that this was related to the address system change that juso.go.kr
describes, but now I doubt this. Can anyone tell me which set of data,
"old" or "new", is appropriate to use in the Seoul data?

Thanks very much for any help you can offer.

Tom
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