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Posted to solr-user@lucene.apache.org by Mani Kumar <ma...@gmail.com> on 2009/07/05 09:19:19 UTC
SynonymFilterFactory usage
hi all,
i am confused a bit about how to use synonym filter configs. i am using solr
1.4.
default config is like :
for query analyzer:
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
ignoreCase="true" expand="true"/>
for index analyzer:
its commented.
while looking @ documentation deeply on
http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#head-2c461ac74b4ddd82e453dc68fcfc92da77358d46
*"**Keep in mind that while the SynonymFilter will happily work with
synonyms containing multiple words (ie: "**
sea biscuit, sea biscit, seabiscuit**") The recommended approach for dealing
with synonyms like this, is to expand the synonym when indexing. This is
because there are two potential issues that can arrise at query time**"*
*
*
considering this above recommendation i think following is the best option
for synonym filter
* for query analyzer: *
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
ignoreCase="true" expand="false"/>
for index analyzer:
<filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
ignoreCase="true" expand="true"/>
am i right?
what do you guys suggest?
thanks!
mani kumar
Re: SynonymFilterFactory usage
Posted by Mark Miller <ma...@gmail.com>.
Disclaimer: I'm no expert here.
Well, are you working with multi-word synonyms? If so, then yes, I'd say
that makes sense to do it at index time. Otherwise, it really depends on
a host of factors.
In terms of your settings, if you expand synonyms at index time, what
would be the point of reducing synonyms at query time? I think you just
need the index time filter?
--
- Mark
http://www.lucidimagination.com
Mani Kumar wrote:
> anyone?
>
> ps: my apologies if you guys think its spamming. but i really need some help
> here.
>
> thanks!
> mani
>
> On Sun, Jul 5, 2009 at 12:49 PM, Mani Kumar <ma...@gmail.com>wrote:
>
>
>> hi all,
>>
>> i am confused a bit about how to use synonym filter configs. i am using
>> solr 1.4.
>>
>> default config is like :
>>
>> for query analyzer:
>> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
>> ignoreCase="true" expand="true"/>
>> for index analyzer:
>> its commented.
>>
>> while looking @ documentation deeply on
>>
>> http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#head-2c461ac74b4ddd82e453dc68fcfc92da77358d46
>> *"**Keep in mind that while the SynonymFilter will happily work with
>> synonyms containing multiple words (ie: "**
>> sea biscuit, sea biscit, seabiscuit**") The recommended approach for
>> dealing with synonyms like this, is to expand the synonym when indexing. This
>> is because there are two potential issues that can arrise at query time**"
>> *
>> *
>> *
>> considering this above recommendation i think following is the best option
>> for synonym filter
>> * for query analyzer: *
>> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
>> ignoreCase="true" expand="false"/>
>> for index analyzer:
>> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
>> ignoreCase="true" expand="true"/>
>>
>> am i right?
>>
>> what do you guys suggest?
>>
>> thanks!
>> mani kumar
>>
>>
>>
>
>
Re: SynonymFilterFactory usage
Posted by Mani Kumar <ma...@gmail.com>.
anyone?
ps: my apologies if you guys think its spamming. but i really need some help
here.
thanks!
mani
On Sun, Jul 5, 2009 at 12:49 PM, Mani Kumar <ma...@gmail.com>wrote:
> hi all,
>
> i am confused a bit about how to use synonym filter configs. i am using
> solr 1.4.
>
> default config is like :
>
> for query analyzer:
> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
> ignoreCase="true" expand="true"/>
> for index analyzer:
> its commented.
>
> while looking @ documentation deeply on
>
> http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters#head-2c461ac74b4ddd82e453dc68fcfc92da77358d46
> *"**Keep in mind that while the SynonymFilter will happily work with
> synonyms containing multiple words (ie: "**
> sea biscuit, sea biscit, seabiscuit**") The recommended approach for
> dealing with synonyms like this, is to expand the synonym when indexing. This
> is because there are two potential issues that can arrise at query time**"
> *
> *
> *
> considering this above recommendation i think following is the best option
> for synonym filter
> * for query analyzer: *
> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
> ignoreCase="true" expand="false"/>
> for index analyzer:
> <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt"
> ignoreCase="true" expand="true"/>
>
> am i right?
>
> what do you guys suggest?
>
> thanks!
> mani kumar
>
>