From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | Volkan YAZICI <yazicivo(at)ttnet(dot)net(dot)tr> |
Cc: | pgsql-patches(at)postgresql(dot)org |
Subject: | Re: Configurable Penalty Costs for Levenshtein |
Date: | 2007-11-05 16:33:42 |
Message-ID: | 200711051633.lA5GXgP05812@momjian.us |
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Lists: | pgsql-patches |
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Volkan YAZICI wrote:
> Hi,
>
> Following patch implements configurable penalty costs for levenshtein
> distance metric in fuzzystrmatch contrib module.
>
> It doesn't introduce any compatibility issues. Just implements
>
> levenshtein(text,text,int,int,int)
>
> function on top of fuzzystrmatch.c:levenshtein_internal(). At the
> same time, levenshtein(text,text) becomes just a wrapper for
> levenshtein(text,text,1,1,1) call.
>
> BTW, in current CVS tip
>
> if (cols/rows == 0) ...
>
> checks in fuzzyztrmatch.c:levenshtein() never fail because of
>
> cols/rows = strlen(...) + 1;
>
> FYI.
>
>
> Regards.
Content-Description: Configurable Penalty Costs for Levenshtein
>
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--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
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