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Re: st: matching strings on words


From   Simon <scmoore.lists@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: matching strings on words
Date   Tue, 30 Mar 2010 20:56:51 +0100

I've had a similar issue:

http://www.stata.com/statalist/archive/2008-08/msg00477.html

Simon




On 30/03/2010 20:00, Jeph Herrin wrote:

I'm not sure what to call this - if I did, I might have
better luck with my searches for a utility. Basically,
I want to do something similar to the utility -nmatch-
which matches first and last names, but I have more than
two words per record.

The problem: I have two files with lists of hospital names.
Hospital names tend to consist of multiple words, that get
used to different extent; the same hospital might be listed
as:

st joseph's
st joseph's memorial
st joseph's memorial hospital
st joseph's memorial hospital of danbury

etc. (There is also a lot variation on eg "Saint vs "St." and
"Memorial" vs "memorial", but I have trapped most of those
already.)

What I'd like to do is match these on "words", and generate
a _merge variable which indicates how many words match vs
how many words there are. Then I (or some unlucky grad student)
can trawl through the matches and decide which ones are the
same hospital.

I can see how to write a program to do such a thing, but am hoping
there is already a solution out there that I overlooked?

thanks,
Jeph

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