Fuzzy matching of postal addresses [1/1]

[Andrew McLean]

In case anyone is interested, here is the latest.

I implemented an edit distance technique based on tokens. This 
incorporated a number of the ideas discussed in the thread.

It works pretty well on my data. I'm getting about 95% matching now, 
compared with 90% for the simple technique I originally tried. So I have 
matched half the outstanding cases.

I have spotted very few false positives, and very few cases where I 
could make a match manually. Although I suspect the code could still be 
improved.

It took a bit of head scratching to work out how to incorporate 
concatenation of tokens into the dynamic programming method, but I think 
I got there! At least my test cases seem to work!

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-- 
Andrew McLean