Soundex essentially takes a single word and produces a value which can be
compared to a similar value, to determine if the words are logically
equivalent, mostly by paying attention to consonants.
PROD> select soundex('Fairfield') from dual
2 /
F614
1* select soundex('Faerfield') from dual
PROD> /
F614
PROD> select soundex('Fairfied') from dual
2 /
F613
PROD> select soundex('Freyfeld') from dual
2 /
F614
An enhanced algorithm would take into account false positives (like the one
above; I doubt any human being would think that "Freyfeld" and "Fairfield"
were the same person with a variant spelling) and false negatives which
occur very easily when you don't have the same number of words being
compared, or one word is missing or abbreviated, or an important consonant
is missing or misplaced. You really need address merge/purge software,
which exists out there, included complete packages and just APIs. Try a
search on that.
-----Original Message-----
Sent: Monday, June 09, 2003 11:05 AM
To: Multiple recipients of list ORACLE-L
What advanced functionality are you looking for?
-----Original Message-----
Sent: Monday, June 09, 2003 10:29 AM
To: Multiple recipients of list ORACLE-L
yes, Im familiar with that function. but you have to write a soundex
algorithm in order to get advanced functionality. I wouldnt even know where
to start with something like that.
Im hoping there is one on the web some where.
>
> From: "Seefelt, Beth" <[EMAIL PROTECTED]>
> Date: 2003/06/09 Mon AM 09:59:43 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: RE: anyone have any soundex scripts?
>
>
> There is a SOUNDEX sql function. Check tahiti.oracle.com for info.
>
> HTH.
>
> -----Original Message-----
> Sent: Monday, June 09, 2003 8:49 AM
> To: Multiple recipients of list ORACLE-L
>
>
> I was on a project a few years ago where we used a soundex algorithm
to
> determine and eliminte duplicate data.
>
> For example we would have:
>
> 301 Fairfield Lane
> 301 Faerfield Lane
>
> Notice the typo? The soundex algorithm caught it. Unfortunately I
forgot
> to grab a copy before I left. Everytime I do a google search on
soundex
> I get a theory website explaining the math behind it.
>
> anyone have one written? or know where I can find one? It is
incredibly
> useful.
>
> --
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Author: Tierstein, Leslie
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