Hello,
Does SOLR supports searching for a keyword which has a
combination of more than 1 language within the same search page?
-----Original Message-----
From: Guglielmo Celata [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 15, 2007 7:39 PM
To: solr-user@lucene.apache.org; [EMAIL PROTECTED]
Subject: Re: I18N with SOLR?
Hi Dillip,
don't know if this helps, but I have set up a TextIt field in the
config/schema.xml file, in order to index italian text.
It works pretty well with non-ascii characters (we do have some accented
vowels, even if not as many as the french).
It also works with stopwords (and I assume with protwords as well, though
I didn't try). I created an italian-stopwords.txt file in the config/ path.
I think the SnowballPorterFilterFactory is a default usable class in Solr,
although I remember having read it's a bit slower than other libraries.
But I am no expert.
<fieldtype name="textIt" class="solr.TextField"
positionIncrementGap="100">
<analyzer>
<tokenizer class="solr.WhitespaceTokenizerFactory "/>
<filter class="solr.ISOLatin1AccentFilterFactory"/>
<filter class="solr.WordDelimiterFilterFactory"
generateWordParts="1" generateNumberParts="1" catenateWords="1"
catenateNumber
s="1" catenateAll="0"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.StopFilterFactory"
words="italian-stopwords.txt" ignoreCase="true"/>
<filter class="solr.SnowballPorterFilterFactory"
language="Italian"/>
</analyzer>
</fieldtype>
On 15/11/2007, Dilip.TS <[EMAIL PROTECTED]> wrote:
Hi Ed,
Thanks for the help, but i have some queries,
i understand that we need to have a stopwords_french.txt and
protwords_french.txt files say for french in solr/conf directory.
Is it like we need to write the classes like FrenchStopFilterFactory,
FrenchPorterFilterFactory for each language
or do we have these classes in built in solr? I didnt find them in
SOLR/Lucene APIs.
I found some classes like org.apache.lucene.analysis.fr.FrenchAnalyzer
etc., in lucene-analyzers.jar.
Any idea what is this class used for?
Thanks in advance,
Regards
Dilip
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Ed
Summers
Sent: Monday, November 12, 2007 7:00 PM
To: solr-user@lucene.apache.org ; [EMAIL PROTECTED]
Subject: Re: I18N with SOLR?
I'd say yes. Solr supports Unicode and ships with language specific
analyzers, and allows you to provide your own custom analyzers if you
need them. This allows you to create different <fieldType> definitions
for the languages you want to support. For example here is an example
field type for French text which uses a French stopword list and
French stemming.
<fieldType
name="text_french"
class="solr.TextField" >
<analyzer>
<tokenizer class="solr.WhitespaceTokenizerFactory " />
<filter
class="solr.FrenchStopFilterFactory"
ignoreCase="true"
words="stopwords_french.txt" />
<filter
class=" solr.FrenchPorterFilterFactory"
protected="protwords_french.txt" />
<filter class="solr.RemoveDuplicatesTokenFilterFactory" />
</analyzer>
</fieldType>
Then you can create a <dynamicField> definitions that allow you to
index and query your documents using the correct field type:
<dynamicField
name="*_french"
type="text_french"
indexed="true"
stored="true"/>
This means that when you index you need to know what language your
data is in so that you know what field names to use in your document
(e.g. title_french). And at search time you need to know what language
you are in so you know which fields to search. Most user interfaces
are in a single language context so from the query perspective you'll
most likely know the language they want to search in. If you don't
know the language context in either case you could try to guess using
something like org.apache.nutch.analysis.lang.LanguageIdentifier.
I hope this helps. We used this technique (without the guessing) quite
effectively at the Library of Congress recently for a prototype
application that needed to provide search functionality in 7 different
languages.
//Ed
On Nov 12, 2007 1:56 AM, Dilip.TS < [EMAIL PROTECTED]> wrote:
> Hello,
>
> Does SOLR supports I18N (with multiple language support) ?
> Thanks in advance.
>
> Regards,
> Dilip TS
>
>
