tsearch stop words

Ummm...I totally don't understand the format of that array at all!

static ESWNODE engstoptree[] = {
{'m',L,9,126},
{'d',L,4,71},
{'b',L,2,40},
{'a',F,0,14},
{'c',0,0,62},
{'f',L,2,79},
{'e',0,0,75},
{'h',0,1,90},
{'i',F,0,108},
{'t',L,4,177},
{'o',L,2,135},
{'n',0,0,131},
{'s',0,0,156},

How do I figure out the actual word it's matching?

Chris

Christopher,

current implementation is ugly, we still didn't move functionality
from OpenFTS to tsearch. Look at makedict subdirectory to create your
custom dictionary. Default list is in engstoptree[] defined
in dic/porter_english.dct

On Mon, 2 Sep 2002, Christopher Kings-Lynne wrote:

How do I get a list of what tsearch considers a stop word?

eg. 'and', 'or', 'the', 'up', 'down', etc. There seem to be heaps of
them...!

Chris

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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83

On Mon, 2 Sep 2002, Christopher Kings-Lynne wrote:

Ummm...I totally don't understand the format of that array at all!

stop words in suffix tree :) I've told it's default list of stop
words and it's certainly far from perfect. Please find attached file
with stop words we used (I just found on my notebook). But again,
it's better to build your own dictionary specific for you domain,
using makedict script.

OpenFTS is much more flexible in this respect and we hope we'd be able
to implement most features of OpenFTS in tsearch, so OpenFTS would be just
a perl wrapper.

Oleg

static ESWNODE engstoptree[] = {
{'m',L,9,126},
{'d',L,4,71},
{'b',L,2,40},
{'a',F,0,14},
{'c',0,0,62},
{'f',L,2,79},
{'e',0,0,75},
{'h',0,1,90},
{'i',F,0,108},
{'t',L,4,177},
{'o',L,2,135},
{'n',0,0,131},
{'s',0,0,156},

How do I figure out the actual word it's matching?

Chris

-----Original Message-----
From: Oleg Bartunov [mailto:oleg@sai.msu.su]
Sent: Monday, 2 September 2002 5:33 PM
To: Christopher Kings-Lynne
Cc: Hackers
Subject: Re: [HACKERS] tsearch stop words

Christopher,

current implementation is ugly, we still didn't move functionality
from OpenFTS to tsearch. Look at makedict subdirectory to create your
custom dictionary. Default list is in engstoptree[] defined
in dic/porter_english.dct

On Mon, 2 Sep 2002, Christopher Kings-Lynne wrote:

How do I get a list of what tsearch considers a stop word?

eg. 'and', 'or', 'the', 'up', 'down', etc. There seem to be heaps of
them...!

Chris

---------------------------(end of broadcast)---------------------------
TIP 2: you can get off all lists at once with the unregister command
(send "unregister YourEmailAddressHere" to majordomo@postgresql.org)

Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83

---------------------------(end of broadcast)---------------------------
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Regards,
Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83