Re: Re: Fuzzy matching

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Joe Conway <joseph(dot)conway(at)home(dot)com>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Re: Fuzzy matching
Date: 2001-08-07 16:48:14
Message-ID: 200108071648.f77GmEX20415@candle.pha.pa.us
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I have added this into /contrib under fuzzystrmatch. Not sure if we
want to merge soundex into that but it can be done later.

> > > Our usual practice with stuff of uncertain usefulness has been to
> > > stick
> > > it in contrib for awhile and see if anyone uses it. If there's
> > > sufficient interest, we'll promote it to mainstream in a future
> > > release.
> >
> > Makes sense to me. Go, Joe!
> >
>
> Per this discussion, here's a patch to implement both levenshtein() and
> metaphone() in a contrib. There seem to be a fair number of different
> approaches to both of these algorithms. I used the simplest case for
> levenshtein which has a cost of 1 for any character insertion, deletion, or
> substitution. For metaphone, I adapted the same code from CPAN that the PHP
> folks did.
>
> A couple of questions:
> 1. Does it make sense to fold the soundex contrib together with this one?
>
> 2. I was debating trying to add multibyte support to levenshtein (it would
> make no sense at all for metaphone), but a quick search through the contrib
> directory found no hits on the word MULTIBYTE. Should worry about adding
> multibyte support to levenshtein()?
>
> Thanks,
>
> Joe
>

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